Biology Multiple Choice Quizzes

Multiple Choice Quiz on Biostatistics | Biostatistics Quiz

noreply@blogger.com (Unknown) — Thu, 24 Feb 2022 15:11:00 +0000

1. Who among the following is known as father of biostatistics?
Neyman
Adolphe Queste
Francis Galton
William Gosset

2.Diagram and Graphs are tools of
presentation
collection of data
analysis
None of these

3. Mode can be located graphically with the help oft?
Line diagram
Bar diagram
Histogram
Pie diagram

4. Which of the following is not a measure of central tendency?
Mean
Mode
Median
Range

5. Find the mode in the following data set-11, 12,13,14,14
11
13
12.8
14

6. Standard deviation is the square of
mode
variance
standard error
regression

7. Chi square test
measure the degree of deviation of the experimental result form the expected result
to test the population variance and sample variance
to test the closeness of observed and expected frequency
all of these

8. Chi square is zero when:
expected frequency is lesser than the observed frequency
expected frequency is equal to the observed frequency
expected frequency is double that of the observed frequency
expected frequency is greater than the observed frequency

9. Correlation coefficient is a number between.
-1 and +1
-1 and 0
0 and +1
+1 and +2

10. To determine variation in wing length of butterfly from five different places would be best best statistical test?
F test
Student t test
Regression analysis
Chi square test

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Geological Time Scale Quiz | Evolution Quiz

noreply@blogger.com (Unknown) — Tue, 15 Feb 2022 16:07:00 +0000

1. Which era is known as the “golden age of reptiles”?
mesozoic
Coenozoic
palaeozoic
Proterozoic

2.Angiosperms evolved during
early cretaceous
mid cretaceous
late cretaceous
late Jurassic

3. Which is the largest Geological time unit?
eons
eras
epochs
periods

4. Which period is referred as the “age of cycads and dinosaurs”?
Devonian
Triassic
Cretaceous
Jurassic

5. During evolution the first multicellular organism appeared during
1 billion years ago
2 billion
200 millions
600 million

6. As per the latest radiometric dating report, what is the age of the earth?
4 billion years
4.54 billion years
4.45 billion years
4.64 billion years

7. The first green plants and fungi appeared on land during which period?
Devonian period
Orosirian period
Cenozoic period
Ordovician period

8. During which period in the age of earth did terrestrial life was well established?
Pleistocene period
Jurassic period
Carboniferous period
cretaceous

9. The rise of human civilization is the main characteristics of.......
Holocene
Pleistocene
Pliocene
miocene

10. The present epoch in the Earth’s age is known as
Pliocene
Miocene
Pleistocene
Holocene

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Quiz on Plant cell Structure and Function | Cell Biology Quiz

noreply@blogger.com (Jazir Haneef) — Sun, 13 Feb 2022 09:33:00 +0000

This labelled diagram quiz on Plant cell Structure and Function is designed to assess your knowledge on plant cell. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking ' Score'. Percentage score will be displayed along with right answers. You can watch this video for better understanding.

Try more Diagram Quizzes: Diagram Quiz on Bacterial Cell

Diagram Quiz on DNA replication

1. The structure labelled 1 is the controlling centre of the cell where DNA is present
nucleolus
vacoule
cytoplasm
nucleus

2. It serves as the site of protein synthesis in the cell. This complex molecular machine labelled 2 is
smooth endoplasmic reticulum
rough endoplasmic reticulum
cytoplasm
ribosome

3. The organelle numbered 3 is involved in deposion of cell wall material. The organelle is
golgi apparatus
rough endoplasmic reticulum
smooth endoplasmic reticulum
cytoplasm

4. The double membrane bound organelle labelled 4 is the site of ATP synthesis, also called as the "power house of the cell" is the
mitochondrion
chloroplast
peroxisome
cytoplasm

5. This single membrane bound organelle is a compartment for oxidation reactions.The organelle labelled 5 is the
mitochondrion
cytoplasm
peroxisome
plastid

6. The organelle labelled 6 serves as a site of synthesis and storage of food and also stores pigment. The organelle is the
plastid
cytoplasm
chloroplast
vacuole

7. The double membrane bound organelle labelled 7, the site of photosynthesis is the
peroxisome
vacuole
plastid
chloroplast

8. This fine filaments numbered 8 maintains the internal organisation and positioning of organelles. The structure is the
cell wall
cytoskeleton
cell membrane
vacuole

9. The largest organelle in a mature plant cell, involved in water balance and intracellular digestion, numbered 9 is
cell wall
vacuole
nucleus
mitochondrion

10. The region labeled 10 is the water based matrix where all organelles are present, it is the
cytoplasm
cell wall
cell membrane
smooth endoplasmic reticulum

11. The structure labeled 11 is the selectively permeable membrane that maitains the internal composition of a plant cell cell is the
mitochondrion
cell wall
cell membrane
smooth endoplasmic reticulum

12. The structure labeled 12, made up of cellulose and provides mechanical support is the
peroxisome
cell wall
cell membrane
smooth endoplasmic reticulum

13. This organelle is involved in lipid biosynthesis. The organelle numbered 13 is the
rough endoplasmic reticulum
cell wall
cell membrane
smooth endoplasmic reticulum

14. This organelle has attached ribosmes for secretory protein synthesis. The organelle numbered 14 is the
rough endoplasmic reticulum
cell wall
plastid
smooth endoplasmic reticulum

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Quiz on Immunoglobulin Classes and Functions | Immunology Quiz

noreply@blogger.com (Jazir Haneef) — Mon, 28 Jun 2021 08:00:00 +0000

This quiz is designed to assess your basic knowledge in 'immunologlobulin classes'. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking ' Score'. Percentage score will be displayed along with right answers.

1. Which of the following fixes complement
IgG
IgM
both a and b
IgG,IgM and IgD
2. Which antibody is primarily involved in mucosal surface defense?
IgM
IgA
IgD
IgG
3. The antibody that functions as B cell receptor is
IgA
IgG
IgD
IgE
4. The largest immunoglobulin with 10 antigen binding site is
IgM
IgD
IgA
IgG
5. Whic of the following immunoglobulins mediates primary and secondary immune response?
IgM
IgG
IgM and IgG
IgM, IgG and IgD
6. The secretory antibody present in colustrum, saliva and tears is
IgE
IgD
IgM
IgA
7. The most abundant immunoglobulin is
IgM
IgA
IgG
IgE
8. The immunoglobulin that has its Fc receptor on mast cell is
IgG
IgG
IgA
IgE

9. The only immunoglogulin that crosses placenta is
IgE
IgA
IgG
IgD
10. Immunoglobulin that mediates Type I hypersensitivity is
IgG
IgM
IgE
IgA
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Krebs cycle or Citric acid cycle Enzyme Labeling Diagram Quiz

noreply@blogger.com (Jazir Haneef) — Sun, 20 Sep 2020 06:53:00 +0000

This labelled diagram quiz on Krebs cycle is designed to assess your knowledge on enzymes in Krebs cycle. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking ' Score'. Percentage score will be displayed along with right answers. You can watch this video for better understanding.

Try more Diagram Quizzes: Glycolysis Enzyme labeling Diagram Quiz

Diagram Quiz on Bacterial Cell

Diagram Quiz on DNA replication

1. The pyruvate formed during glycolysis enters mitocondria and is converted to Acetyl CoA. The enzyme in this link reaction is
Pyruvic acid dehydrogenase
Acetate dehydrogenase
Isocitrate dehydrogenase
Aconitase

2.In the first step of Krebs cycle, Acetyl CoA (C2) is added to oxaloacetate (C4) to form citrate (C6). The enzyme 1 involved in this step is
Aconitase
Citrate synthase
Acetate dehydrogenase
Isocitrate dehydrogenase

3. The second step of Krebs cycle is the conversion of Citrate (C6) to isocitrate (C6). The enzyme 2 involved in this step is
Citrate synthase
Citrate dehydrogenase
Isocitrate dehydrogenase
Aconitase

4. In the third step of Krebs cycle, Isocitrate (C6) is converted into alphaketoglutarate (C5) by dehydrogenation and decarboxylation. The enzyme 3 involved in this step is
Citrate dehydrogenase
Isocitrate dehydrogenase
α-ketoglutarate dehydrogenase
Acetate dehydrogenase

5. In the Fourth step of Krebs cycle, α-ketoglutarate (C5) is oxidatively decarboxylated to form succinyl-CoA (C4), a high energy compound. The enzyme 4 involved in this step is
α-ketoglutarate dehydrogenase
Isocitrate dehydrogenase
Acetate dehydrogenase
Aconitase

6. The Fifth step of Krebs cycle is the conversion of Succinyl CoA(C4) to succinate (C4) by substrate level phosphorylation . The enzyme 5 involved in this step is
Succinyl-CoA synthetase
Succinyl-CoA dehydrogenase
Fumarase
Isocitrate dehydrogenase

7. In the sixth step of Krebs cycle, Succinate(C4) is converted to fumarate (C4) by dehydrogenation. The enzyme 6, located in the inner mitochondrial membrane is
Succinyl-CoA dehydrogenase
Succinate synthase
Succinate dehydrogenase
Fumarase

8. In the seventh step of Krebs cycle, Fumarate(C4) is converted to malate(C4) with the addition of water. The enzyme 7, involved in this step is
Fumarase
Aconitase
Malate dehydrogenase
Malate synthase

9. In the final eighth step, Malate (C4) is converted to oxaloacetate(C4) with NADH synthesis.The enzyme involved is
Malate dehydrogenase
Malate synthase
oxaloacetate synthase
oxaloacetate dehydrogenase

10. Krebs cycle is also called as
Citric acid cycle
TCA cycle
both a and b
none of these

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Glycolysis Enzyme Labeling Diagram Quiz | Physiology Quiz

noreply@blogger.com (Jazir Haneef) — Sun, 13 Sep 2020 10:57:00 +0000

This labelled diagram quiz on Glycolysis is designed to assess your knowledge on enzymes in Glycolysis. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking ' Score'. Percentage score will be displayed along with right answers.

Try more Diagram Quizzes: Diagram Quiz on Plant Cell

Diagram Quiz on Bacterial Cell

Diagram Quiz on DNA replication

Quiz on Glycolysis

1. The first step of Glycolysis is an irreversible regulatory step where glucose is Phosphorylated to glucose-6 phosphate using ATP. The enzyme 1 involved in this step is
pyruvate kinase
phosphoglycerate mutase
Aldolase
Hexokinase

2. The second step of Glycolysis is the conversion of glucose-6-phosphate to fructose 6-phosphate. The enzyme 2 involved in this step is
Phosphofructokinase
Aldolase
Phosphoglucoisomerase
Phosphoglycerate mutase

3.The third step of Glycolysis is an irreversible rate limiting regulatory step where fructose-6-phosphate is phosphorylated to fructose-1,6- bisphosphate using ATP. The enzyme 3 involved in this step is
Phosphofructokinase
Aldolase
Phosphotriose isomerase
Enolase

4. In the fourth step of Glycolysis fructose-1,6-bisphosphate splits into 2, 3-carbon molecules, dihyroxyacetone phosphate (DHAP) and glyceraldehyde 3-phosphate (GAP). The enzyme 4 involved in this step is
Phosphotriose isomerase
Phosphoglucoisomerase
Aldolase
Enolase

5. In the step 5, dihyroxyacetone phosphate is converted to GAP.The enzyme 5 involved in this step is
Phosphoglycerate mutase
Phosphoglycerate kinase
Phosphotriose isomerase
Pyruvate kinase

6. In the sixth step of Glycolysis, glyceraldehyde 3-phosphate is dehydrogenated to 1,3-bisphosphoglycerate. The enzyme 6 involved in this step is
Phosphoglycerate kinase
Pyruvate kinase
Glyceraldehyde 3-phosphate dehydrogenase
Hexokinase

7. In step 7 of Glycolysis, 1,3-bisphosphoglycerate is hydrolysed to 3-phosphoglycerate by forming ATP. The enzyme 7 involved in this step is
phosphoglycerate kinase
Phosphofructokinase
Aldolase
Phosphotriose isomerase

8. In step 8 of Glycolysis, 3-phosphoglycerate is converted to 2-phosphoglycerate. The enzyme 8 involved in this step is
Aldolase
phosphoglycerate mutase
enolase
pyruvate kinase

9. In step 9 of Glycolysis, 2-phosphoglycerate undergo dehydration forming phosphoenolpyruvate. The enzyme 9 involved in this step is
Enolase
Aldolase
phosphoglycerate kinase
pyruvate kinase

10. The final tenth step of Glycolysis is an irreversible regulatory step where phosphoenolpyruvate is hydrolysed to form pyruvate with the synthesis of ATP. The enzyme 10, final enzme involved in this step is
phosphoglycerate kinase
pyruvate kinase
phosphoglycerate mutase
hexokinase

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Diagram Quiz on Neuron Structure and Function (Labeling Quiz)

noreply@blogger.com (Jazir Haneef) — Sat, 12 Sep 2020 15:30:00 +0000

This labelled diagram quiz on Neuron is designed to assess your basic knowledge in Structure and Function of Neuron. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking ' Score'. Percentage score will be displayed along with right answers.

Try more Diagram Quizzes: Diagram Quiz on Plant Cell

Diagram Quiz on Bacterial Cell

Diagram Quiz on DNA replication

1. Identify the cell type in the above figure
Liver Cell
Cardiac Cell
Nerve cell
Skin cell

2. In the figure, labeled ‘1’ receives impulses from adjacent neuron. It is called the
Dendron
Dendrite
Axon
Axonite

3. In the figure, labeled ‘2’ is the short filaments from the cell body that carries impulses from dendrites to the cell body which is the
Schwann cell
Axonite
Axon
Dendron

4. Name the cell type, labeled ‘3’ that produce the myelin sheath around neuronal axon
Schwann cell
glial cell
Axonites
neurons

5. The organelles are embedded in the viscous fluid region of the neuron labeled ‘4’ is
Soma
nucleus
cytoplasm
axoplasm

6. The region labeled ‘5 ’, is also called as soma, that contains the nucleus and cytoplasm
Nucleus
cell body
axoplasm
glial cell

7. In the figure labeled ‘6’, is an oval shaped membrane-bound structure found in the soma that contains the nucleolus and chromosomes
cytoplasm
Nucleus
cell body
myelin sheath

8. It is the longest filament from the cell body that carries impulses from the cell body to outside. The part labeled ‘7’ is the
Dendron
Dendrite
Axon
Axonite

9. The part labeled ‘8’ are branches of axon that carries impulses to the synaptic knob
Schwann cell
glial cell
Axonite
neurons

10. It is the tip of axonite that contains vesicles which releases neurotransmitters. The part labeled ‘9’ is
Schwann cell
glial cell
Axon
Synaptic knob

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Multiple Choice Quiz on Vaccines | Immunology Quiz

noreply@blogger.com (Unknown) — Thu, 21 May 2020 10:54:00 +0000

1. Which of the following statements is true of DNA vaccines?
DNA vaccines can have distinct advantages when preparing subunit vaccines against viruses that frequently alter their antigens
DNA vaccines require cold storage in tropical countries
DNA vaccines must be administered on gold particles if they are to be effective
DNA vaccines are only effective if followed by a protein boost

2. To which one of the following groups would it be acceptable to give a live attenuated viral vaccine?
Patients treated with steroids
Patients with leukemia
A Children under 8 years of age
Patients treated with radiotherapy

3. DNA vaccines can be effective if they
encode expression of antigen
encode expression of appropriate cytokines
can be engineered to contain DNA motifs that have an adjuvant effect
all of these

4. Polysaccharides are rarely effective vaccines by themselves because they
large repeating B cell epitopes
only induce CTL responses
are usually same in people and bacteria
lack classical T cell epitopes

5. For vaccination against tuberculosis, what is the most important facet of the immune response to be stimulated?
macrophage-activating cell-mediated immunity
Cytotoxic T cells
Neutrophils
all of these

6. An antibody to CD40 would be expected to enhance vaccine effectiveness by
inducing dendritic cell apoptosis
blocking CD40 signalling on dendritic cells
activating CD40 signalling on dendritic cells
none of these

7. What is the minimum percentage of children that need to be vaccinated successfully in order to achieve herd immunity to Diphtheria?
25%
50%
75%
100%

8. A small protein subunit used in a vaccine can fail to stimulate T cell immunity because of:
lack of carrier determinants
lack of glycosylation
HLA related unresponsiveness
none of these

9. An antibody response to a protein vaccine can only be obtained:
If disulfide bonds are maintained
If the peptide bonds are maintained
If the molecule is glycosylated
If the molecule maintains discontinuous epitopes

10. Which of the following is a feature of a Salmonella based vaccine expressing antigens from other infectious agents?
The organism does not need to be attenuated
Only secretory IgA is elicited
Immunity is limited to the gut
It provokes both oral and systemic immunity

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Cell Organelles Quiz | Quiz on Nucleus, Golgi Bodies, Chloroplast, Lysosomes

noreply@blogger.com (Unknown) — Sun, 06 Oct 2019 08:37:00 +0000

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you'll have 15 second to answer each question.

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Diagram Quiz on Chemiosmosis and ATP synthesis | Physiology Quiz

noreply@blogger.com (Jazir Haneef) — Mon, 23 Sep 2019 09:13:00 +0000

1. Identify the site of electron transport chain, labelled as 1
outer mitochondrial membrane
inner mitochondrial membrane
matrix
intermembrane space
2. The electrons are donated to to the complex I by the coenzyme labelled 2
FAD
NAD
NADH
FADH2
3. The electrons are donated to to the complex II by the coenzyme labelled 3
FADH2
NAD
FAD
NADH
4. The source of NADH and FADH2 is the cyclic reaction labelled 4 called as
Calvin cycle
ETC
Citric acid cycle
CAM cycle
5. The energy from electron flow is used to pump H+ towards this region, labelled 5 is
mitochondrial matrix
intermembrane space
mitochondrial inner membrane
mitochondrial outer membrane
6. Name the terminal electron acceptor of electron transport chain labelled 6
Oxygen
Nitrogen
Carbon
Flourine
7. Name the chemical labelled 7 which combines with ADP forming ATP
inorganic sulphate
nitrate
inorganic phosphate
organic phosphate
8. The enzyme complex involved in ATP synthesis located on inner mitochondrial membrane is
Synthase
ATP synthase
ATP translocase
Ligase
9. The site to which ATP is synthsized labelled 9 is
Mitochondrial inner membrane
Mitochondrial outer membrane
Mitochondrial Matrix
cristae
10. Chemiosmosis proposed by Peter Mitchell involves the following
electron flow and energy release
proton gradient formation
Proton movement driven ATP synthesis
All of these
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NEET Biology Practice Test on Animal Kingdom

noreply@blogger.com (Unknown) — Wed, 24 Jul 2019 16:10:00 +0000

Quiz on Plant Science

noreply@blogger.com (Unknown) — Tue, 30 Oct 2018 18:40:00 +0000

1. Name the scientists who discovered restriction enzymes
Watson and
Jacob and Monad
Nathan, Arber and Smith
Boyer and Cohen
2. Asexual, hollow fungal fruiting body lined inside with conidiophores is called
Conidium
Basidium
Peridium
Pycnidium
3. The modern bread wheat Triticum aestivum is
Diploid
Triploid
Hexaploid
Tetraploid
4. The composite transposons(Tn10) characteristically contain copies of
Introns
Insertion sequence
Ac element
Genes that encode sigma factor
5.Select the alga with unbranched thallus
Ectocarpus
Zygnema
Polysiphonia
Batrachospermum
6.From the following statements find out the one which is not an objective of plant embryo culture
Clonal propagation of an elite mother plant
Overcoming seed dormancy
Overcoming embryo abortion due to incompatibility factors
7. Which of the following is not an objective of vegetative propagation
Multiplication of an elite variety
Production of plants which are resistant to pests
Cost effective multiplication of plants
Production of plants which are resistant to pests
8.Which of the following is a rootless pteridophytes
Lycopodium
Isoetes
Ophioglossum
Salvinia
9. Which of the following is the only living fossil representative of Gymnosperm
Ginkgo bioloba
Cupressus sempervirens
Pinus sylvestris
Glossopteris browniana
10. Choose the species of Gnetum which is a woody climber
Gnetum gnemon
Gnetum ula
Gnetum trinerve
Gnetum contractum
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Quiz on DNA Scientists

noreply@blogger.com (Jazir Haneef) — Fri, 11 May 2018 17:11:00 +0000

This DNA History quiz is designed to assess your basic knowledge in ‘Scientists in DNA Structure Discovery ’.Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.

Interesting Related Quizzes

Diagram quiz on DNA structure

Diagram quiz on DNA replication

1. In 1869, he isolated DNA with associated proteins from white blood cells and called it as "nuclein". The scientist who identified DNA for the first time as a distinct molecule is
Watson and Crick
Erwin Chargaff
Friedrich Miescher
Rosalind Franklin
2. According to him, DNA is a string of nucleotide joined through phosphate group (1919). The scientist who puts forward the structure of nucleotide is
Phoebus Levene
Frederick Griffith
Oswald Avery
Francis Crick
3. In 1863, he explained that "factors" passed on from parent to offspring is responsible for heredity. The scientist who indirectly mentioned "genes" as "factors" for the first time is
Erwin Chargaff
Friedrich Miescher
Gregor Mendel
Alfred Hershey
4. In 1928, he observed that "transforming factor" is responsible for the virulence of non-virulent live bacteria. This experiment was conducted by
Frederick Griffith
Erwin Chargaff
Gregor Mendel
Martha Chase
5. In 1944, they found out that the "transforming factor" is DNA. This experiment that proved DNA as the genetic material was conducted by
Alfred Hershey and Martha Chase
James Watson and Francis Crick
Avery, MacLeod and McCarty
Maurice Wilkins and Rosalind Franklin
6. Who used the term "nucleic acid" for the first time in 1899?
Friedrich Miescher
Avery
Altmann
Erwin Chargaff
7. The experiment using T2 phage in 1952 further confirmed that the DNA is the genetic material. Bacteriophage experiment was carried out by
Alfred Hershey and Martha Chase
James Watson and Francis Crick
Maurice Wilkins and Rosalind Franklin
Lederberg and Tatum
8. In 1950, he found out that the purines and pyrimidines are always in equal amounts. This key observation in elucidating DNA structure was made by
Francis Crick
Frederick Griffith
Erwin Chargaff
Maurice Wilkins
9. Who is the unsung hero whose X-ray diffraction pictures of DNA actually helped in the discovery of DNA structure is?
Maurice Wilkins
Rosalind Franklin
Erwin Chargaff
Linus Pauling
10. In 1953, the double helix structure of DNA was proposed and later in 1962 Nobel Prize were awarded to
James Watson and Francis Crick
James Watson, Francis Crick and Chargaff
James Watson,Francis Crick, Maurice Wilkins and Rosalind Franklin
James Watson,Francis Crick and Maurice Wilkins
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Quiz on Plant Transport | Plant Physiology Quiz

noreply@blogger.com (Jazir Haneef) — Thu, 05 Apr 2018 16:16:00 +0000

This multiple choice quiz on plant transport is designed to assess your basic knowledge in ‘plant transport’.Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.

1. Phloem is associated with transport of
water
minerals
photosynthates
all of these
2. Water transport in plants occur through
collenchyma
parenchyma
phloem
xylem
3. Translocation of organic solutes occur in
downward movement
upward movement
radial movement
all of these
4. According to Transpiration pull theory, which are the major factors responsible for ascent of sap through xylem?
turgor pressure and osmosis
cohesion, adhesion and transpiration pull
Transpiration pull and root pressure
cohesion, adhesion and osmosis
5. All the following are objections against root pressure theory of ascent of sap except
guttation and bleeding
ascent of sap in unrooted plants
Absence of root pressure in conifer trees
low absorption in detopped plants than plants with leaves on top
6. The movement of water through cell wall and inter cellular spaces during radial transport from root hair to root xylem through root cortex is called
vacoular pathway
ascent of sap
apoplastic pathway
symplastic pathway
7. Movement of solutes through phloem is always from
sugar sink to source
sugar source to sink
leaf to phloem
leaf to xylem through sieve tubes
8. Which is the most abundant solute in phloem sap?
sucrose
glucose
starch
amylose
9. The transfer of sugar from leaf mesophyll to sieve elements of phloem is called
osmosis
phloem loading
phloem unloading
sink loading
10. According to Pressure flow hypothesis, the major force responsible for mass transfer of solute from source to sink is
diffusion
hydrostatic pressure gradient
water potential in source
water potential in sink
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Quiz on Scientific Method | Research Methodology Quiz

noreply@blogger.com (Jazir Haneef) — Fri, 16 Feb 2018 18:02:00 +0000

This quiz is designed to assess your basic knowledge in ‘scientific method’.Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.

1. Scientific method is a systematized and organized way of gathering knowledge through an orderly process of
in depth analysis -interpretation-generalization and theorizing-hypothesis formulation
observation-experimentation-framing of hypothesis-theorizing-interpretation
observation- experimentation-interpretation-generalization
observation-framing of hypothesis-experimentation-interpretation-theorizing
2. Scientific method starts with
careful observation
framing hypothesis
review of literature
inductive reasoning
3. The detailed study of available data on the topic selected is called
review of literature
peer review
blind review
scientific evidence
4. Formulating a hypothesis refers to
an educated guess based on experience
the possible answer based on experience
an educated guess that can be tested scientifically
a predictive statement for conducting an experiment
5. In majority of experiments, the validity of hypothesis is tested by comparing experimental results with control. Controlled experiment refers to setting up a control or a
a treatment in non experimental natural condition
a treatment in experimental natural condition
a treatment in non experimental testing condition
a treatment in experimental artificial condition
6. Which of the statement is correct regarding theory and law?
theory is universally accepted capable of making true predictions
Law is universally accepted capable of making true predictions
Theory has more authenticity than law
Generally Laws are subjected to revision and rejection
7. Formulation of the theory of gravitation by Issac Newton (apple story) is an example of
willful invention
serendipity
scientific evidnece
zemblanity
8. Which of the hypothesis is stated first with an objective to avoid personal bias of the investigator in collecting data?
null hypothesis
alternative hypothesis
ad hoc hypothesis
auxillary hypothesis
9. The variable that the researcher changes in an experiment is called
dependent variable
independent variable
controlled variable
uncontrolled variable
10. The expert scrutiny of result of a scientific paper before publishing is called
review of literature
self review
expert review
peer review
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Quiz on Human Genetics | Genetics Quiz

noreply@blogger.com (Unknown) — Thu, 15 Feb 2018 17:22:00 +0000

This quiz is designed to assess your basic knowledge in ‘Human Genetics’.Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.

1. Which of the following cannot be deleted in a developing foetus by amniocentesis?
Down's syndrome
Jaundice
Klinefelter's syndrome
Sex of the foetus
2. Select the incorrect statement with regard to haemophilia.
It is a dominant disease
A single protein involved in the clotting of blood is affected.
It is a sex linked disease
it is a recessive disase
3. Down's syndrome in humans is due to
three X chromososme
three copies of chromosome 21
monosomy
two Y chromosomes
4. XO chromosomal abnormality in human beings causes
Turner's syndrome
Down's syndome
Klinefelter's syndrome
Edward's syndrome
5. Gynaecomastia is the symptom of
Kinefelter's syndrome
Down's syndrome
Turner's syndrome
cri-du-chat syndrome
6. Which one is the incorrect statement with regard to the importance of pedigree analysis?>
It confirms that DNA is the carrier of genetic information
It helps to understand whether the trait in question is dominant or recessive
it confirms that the triat is linked to one of the autosome
it helps to trace the inheritance of a specific trait
7. Albinism is due to deficiency of
tyrosinase
amylase
acetyl cholinesterase
carbonic anhydrase
8. Which of the following chromosomal constitution refers to Jacob's syndrome in human?
44+XO
44+XXY
44+XYY
45+XYY
9. Which following pair of diseases is caused by two genes located on human X chromosome?
colour blindness and phenylketonuria
colour blindness and haemophilia
colour blindness and hypertrichosis
colour blindness and albinism
10. The hereditary disease in which the urine of a person turns black on exposure to the presence of homogenetistic acid is known as
ketonuria
haematuria
phenylketonuria
alkaptonuria
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Quiz on Plant Growth Regulators | Plant Physiology Quiz

noreply@blogger.com (Unknown) — Wed, 14 Feb 2018 15:36:00 +0000

This quiz is designed to assess your basic knowledge in ‘Plant growth regulators’.Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.

1. Phytohormones
hormones regulating flowering
hormones regulating secondary growth
hormones regulating growth from seed to adulthood
groth regulators synthesised by plants and influencing physiological process
2. The phytohormone which induces triple response is
IAA
ABA
GA3
C2H4
3. Gibberellic acid induces flower
in short day plants under short day conditions
in some gymnospermic plants only
in day neutral plants under dark conditions
in long day plants under short day conditions
4. Which breaks dormancy of potato tuber
ABA
IAA
Zeatin
Gibberellin
5. Ripening of banana is accompanied with
sudden rise in cytokinin
sudden rise in auxin
sudden rise in ethylene
sudden rise in gibberellin
6. Auxin is synthesized in which part of the plant?
apical
nodal
internodal
axillary
7. Coconut milk stimulates cell division as it is a rich source of
auxin
gibberellin
cytokinin
ethylene
8. The most abundant occurring plant hormone is
cytokinin
ABA
IBA
Indole 3 acetic acid
9. Which one of the following pairs is incorrectly matched?
adenine derivative -kinetin
terpenes -IAA
gas-ethylene
indole compounds-IBA
10. Parthenocarpic development of fruit is brought about by
NAA, 2 T
2,4-D
NAA, 2,4-D
2,4, 5-T
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Quiz on Light Independent Reaction - Calvin Cycle

noreply@blogger.com (Unknown) — Wed, 07 Feb 2018 14:52:00 +0000

1. How many ATP and NADPH molecules are required to synthesize one molecule of glucose in C3 cycle?
18 ATP and 12 NADPH
12 ATP and 12 NADPH
12 ATP and 12 NADH
18 ATP and 12 NADH
2. The initial CO2 acceptor in C3 cycle is
Phosphoeneolpyruvate
RuBP
phosphoglycolate
citrtic acid
3. Calvin cycle is involved in the
synthesis of glucose
synthesis of NADPH
synthesis of ATP
hydrolysis of water
4. How many molecules of 3-phosphoglycerate is synthesized from the reaction between 6 CO2 and 6 RuBp
3
6
12
18
5. How many ATP and NADPH molecules are used in the reduction phase to convert 3-phosphoglycerate to glyceraldehyde-3-phosphate?
6 ATP and 6 NADPH
6 ATP only
12 ATP and 12 NADPH
12 NADPH only
6. How many glyceraldehyde-3-phosphate is required to synthesize one glucose molecule?
2
3
6
12
7. The enzyme involved in CO2 fixation of C3 cycle is
RuBisO
RuBisCo
PEP carboxylase
Phosphoglycerokinase
8. C3 cycle involves all the steps except
Reduction
CO2 fixation
ATP synthesis
Regeneration of RuBp
9. The site of light independent reaction of photosynthesis is
Thylakoid membrane
Thylakoid lumen
Stroma
Grana
10. How many ATP and NADPH is used for the regeneration of 6RuBp molecules?
12 ATP and 6 NADPH
12 ATP only
6ATP and 6 NADPH
6 ATP only
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Quiz on Biotechnology and Genetic Engineering

noreply@blogger.com (Unknown) — Tue, 23 Jan 2018 17:44:00 +0000

1. Two bacteria found to be very useful in genetic engineering experiments are
Escherichia and Agrobacterium
Nitrobacter and Azotobacter
Nitrosomas and Klebsiella
Rhizobium and Diplococcus

2. Crown gall disease in plants is caused by
Ti plamid
Pi plasmid
virus
bacteria

3. Golden rice is a promising transgenic crop. When released for cultivation, it will help in
pest resistance
alleviation of vitamin A deficiency
high lysine content
insect resistance

4. Gel electrophoresis is used for
isolation of DNA molecules
cutting of DNA into fragments
separation of DNA fragments according to their size
construction of recombinant DNA by joining with cloning vectors

5. Which of these are most widely used in genetic engineering?
plastid
plasmid
mitochondria
ribosome

6. New strain of bacteria which is used in chewing up oil spoilage is
Escherichia coli
Bacillus subtilis
Salmonella typhimurium
Pseudomonas putida

7. Cryopreservation of seeds is done at:
0 oC
-10 oC
-196 oC
-25 oC

8. Electroporation involves
promotion of seed germination by induced imbibition of water with electric current
passage of sucrose through sieve pores by electroosmosis
purification of saline water with the help of an artificial membrane
making transient pores in cell membrane to facilitate entry of gene constructs

9. Known sequence of DNA that is used to find complementary DNA strands, is
DNA probe
vector
recombinant DNA
plasmid

10. Variable Number of Tandem Repeats (VNTRs) in the DNA molecule are highly useful in
DNA finger printing
stem cell culture
recombinant DNA technology
monoclonal antibody production

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Quiz on Pesticides and Biofertilizers

noreply@blogger.com (Unknown) — Mon, 22 Jan 2018 17:02:00 +0000

This quiz is designed to assess your basic knowledge in ‘Pesticides an Biofertilizers’.Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.

1. 2,4-D is an effective
weedicide
rodenticide
fungicide
weedicide
2. The biofertilizers are
Anabaena and Azolla
quick growing crop ploughed under soil
cow dung, manure and farmyard waste
all of these
3. Which aquatic fern is used to increase the yield in paddy crop?
Marsilea
Azolla
Salvinia
All of these
4. Bordeaux mixture was discovered by
Watson
Millardet
Harrison
Khorana
5. Which of the following is the pair of biofertilizers?
Rhizobium and grasses
Azolla and BGA
nostoc and Legume
Salmonella and E.coli
6. Which of the following pesticides is an acetylcholinesterase inhibitor?
aldrin
BHC
Endosulphan
Malathion
7. The thurioside is a proteinaceous toxin, which is obtained from
green manure
bacterial origin
biofertilizers
farmyard manure
8. What is agent orange?
Colour used in fluorescent lamps
a weedicide containing dioxin
A biodegradable inseecticide
hazardous chemical used in luminous paints
9. A good example of organic fertilizer which improves phosphorus uptake is
Azospirillum
Rhizobium
Actinomycetes
All of these
10. Pyrethrin is obtained from
Carthamus
Azadirachta
Amaranthus
Chrysanthemum
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Quiz on Light Dependent Reaction of Photosynthesis

noreply@blogger.com (Unknown) — Thu, 11 Jan 2018 14:33:00 +0000

1. In light dependent reaction of photosynthesis, light energy is converted to
Heat energy
ATP and NADH
ATP and NADPH
ATP
2. Which is the site of light reaction of photosynthesis?
Chloroplast
mitochondrion
stroma
thylakoid membrane
3. Light reaction does not produce
NADPH
ATP
Glucose
protons
4. Which of the pigment molecule usually acts as a reaction center?
Chlorophyll a
Chlorophyll b
Carotenoids
Both a and b
5. Which of the following statements are correct regarding the location of Photosystems?
PSI and PSII are uniformly distributed in thylakoids
PSI in appressed region of grana thylakoids and PSII in non-appressed region
PSI and PSII in non-appressed regions
PSI in non-appressed region of grana thylakoids and PSII in appressed region
6. The F1 particle of ATP synthase is oriented towards
stroma
lumen
thylakoid membrane
stroma lamella
7. Photolysis of water is involved in
filling electron gap in PSII
creating electrochemical gradient
filling electron gap in PSI
both a and b
8. Which of the following statement is correct regarding cyclic photophosphorylation?
Only ATP is produced
Predominant in bacteria
No photolysis of water
All of these
9. The reactions of non cyclic photophosphorylation is called as
J scheme
S scheme
K scheme
Z scheme
10. Herbicide Diuron inhibits the flow of electrons from
QA to QB
P680-phaeophytin
FeS-Fd
Cyt F-PC
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Quiz on Cellular Respiration and Photosynthesis

noreply@blogger.com (Unknown) — Tue, 19 Dec 2017 18:28:00 +0000

1. In non-cyclic photophosphorylation,water splitting refills 'electron hole' in PS II and the site of water splitting is
stroma
grana
thylakoid membrane
thylakoid lumen
chloroplast membrane
2. During respiration,incomplete breakdown of C6H12O6 into 2 pyruvate molecules occurs in
cristae
cytosol
outer mitochondrial membrane
inner mitochondrial membrane
mitochondrial matrix
3. All the following statements on C4 plants are true except
C3 cycle is present in C4 plants
RuBP is the initial CO2 acceptor
photorespiration is negligible in C4 plants
CO2 fixation occurs at two sites
The first product formed is Oxaloacetic acid
4. The number of NADH molecules produced per glucose molecule in Krebs cycle is
8
6
4
2
1
5. Which of the following process in cellular respiration is independent of oxygen concentration?
Oxidative phosphorylation
electron transport chain
Krebs cycle
Embden-Meyerhof pathway
Chemiosmosis
6. The proton channel; cytochrome b6 f complex of photosynthesis is analogous to respiratory complex
cytochrome bc1
cytochrome c oxidase
NADH-CoQ reductase
succinate dehydrogenase
ATP synthase
7. During respiration,the energy released during electron flow is used to pump H+ into
mitochondrial matrix
cristae
mitochondrial outer membrane
mitochondrial intermembrane space
cytoplasm
8. During photosynthesis,the energy released during electron flow is used to pump H+ into
thylakoid membrane
thylakoid space
grana
stroma
chloroplast inner membrane
9. During respiration, Water is formed at the end of electron transport chain.What is the source of oxygen for the synthesis of water?
C6H12O6 (glucose)
CO2
Molecular O2
lactic acid (C3H6O3)
pyruvic acid (C3H4O3)
10. Light reaction of photosynthesis converts light energy to chemical energy in the form of
ATP
NADH
NADPH
Both A and B
Both A and C
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Quiz on Horticulture

noreply@blogger.com (Unknown) — Wed, 13 Dec 2017 06:25:00 +0000

This agriculture quiz is designed to assess your knowledge in ‘horticulture’. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.

1. The practice of complete removal of trunk of a tree leaving a stump alone is called
thinning out
dehorning
coppicing
heading back
2. The system of planting which accomadates 15 % more plants than that in square system
triangular system
rectangular
hexagonal
quincunx system
3. Blanching of vegetables is done mainly to
remove tissue gas
fix colour
inactivate bacteria
inactivate enzymes
4. Which of the following indoor is poisonous?
Dracena
Cordyline
Chlorophytum
Diffenbachia
5. Technique that control shape, size and direction of plant growth as
Topiary
Thinning
Dis budding
Training

6. Based on agronomic classification Glyricidia comes under
fodders
fibre crops
green manure
spices
7. The art of training plants to different shapes is known as
Topiary
Trophy
Pergola
Moribana
8. Plastic mulches are used in vegetable production for
moisture conservation
disease control
weed control
all of these
9. Golden revolution is related to the production of
Pulse
oil seeds
fish
horticulture
10. The best method to propagate a good quality jack fruit tree is
layering
approach grafting
tongue grafting
seed propagation
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Immunology Multiple Choice Quiz on Antibodies

noreply@blogger.com (Unknown) — Wed, 22 Nov 2017 16:21:00 +0000

This immunology quiz is designed to assess your knowledge in ‘Antibodies’. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.

1. The basic unit of immunoglobulin (Ig) is composed of:
Two identical heavy and two different light chains
Two different heavy and two different light chains
Two different heavy and two identical light chains
Two identical heavy and two identical light chains
2. IgE
is present in high concentration in serum
is bound together by J chain
bind to mast cells through its Fab region
differ from IgG antibody because of its different H chains
3. The Fab portions of Ig
contains the J chain
mediates biological effector functions of Ab molecules
binds to an Fc receptor
contains the idiotype of the Ig
4. Ig heavy chains are
not glycosylated
not important to binding of antigen
expressed by T cells
encoded by a constant region exon, variable exon, diversity exon and joining exon
5. IgA
crosses the placenta
is involved in hay fever
is present in saliva and milk
activates complement by the classical pathway
6. Human IgM
is largely restricted to the circulation
is the antibody produced by high affinity plasma cells
protects mucosal surfaces
crosses the placenta
7. The Fc region of antibody
generally confers biological activity on the various molecules
contains both heavy and light chains
is not important for triggering of IgE mediated hypersensitivity
is not a requirement for placental transmission
8. The Fab region of an Ig is responsible for:
C1q fixation
Binding to macrophages
Binding to antigen
Binding to Fc receptors
9. Cells destined to become IgA producing plasma cells do not
produce J Chain
produce secretory component
home to any mucosal area
migrate from mucosal areas on stimulation with antigen
10. Cleavage of IgG by Papain produces
F(ab')2
Fab
Isolated heavy chains
Isolated light chains
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Immunology Quiz on Innate Immunity

noreply@blogger.com (Unknown) — Wed, 22 Nov 2017 10:25:00 +0000

This immunology quiz is designed to assess your basic knowledge in 'Innate immunity'. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking ' Score'. Percentage score will be displayed along with right answers.

1. Innate immunity
These responses are not directed specifically to the infectious agent.
These responses are not affected by prior exposure to the agent.
These responses are operating constantly to prevent the establishment of any infection.
All of the above
2. Which of the following statement is correct about Macrophages
produce nitric oxide
are main immune cells for dealing with viruses
circulate in blood stream
are first lecukocytes to arrive at the site of a skin infection
3. Molecule directly involved in NK cell mediated killing include
complement
superoxide
granzyme A and B
None of these
4. Tears contain
IgG
IgA
Lysozyme
all of these
5. Dendritic cells are characterized by
their ability to release histamine
their interface between the innate and adaptive immune systems
expression of CD3
expression of IgM molecules
6. Which of the following is not an example of a nonspecific defense mechanism?
inflammation
mucous membrane
skin
antibodies or immunoglobulins.
7. Opsonins include
magainins
C9
IFNgamma
C3b
8. Phagocytosis
is important in bacterial infections
is a process that does not involve energy
is carried by cells of the adaptive immune system
results in division of the cell
9. Both basophils and mast cells
release histamine
are found primarily in lymph nodes
circulate in blood stream
are phagocytic
10. Pattern Recognition Receptors (PRR) include which of the following?
Unmethylated CpG sequences
Lipopolysaccharide (LPS)
Lectin like molecules
Pathogen Associated Molecular Patterns (PAMPs)
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