School of the Future 11th Grade Biology

6/4/14

2014-06-04T23:24:00.000-04:00

Last day of class! Woot! Remember to review your old quizzes, check ins and exit cards to help you prepare for the final on Monday at 12:40pm.

6/3/14

2014-06-03T13:07:00.001-04:00

Tonight's homework is as follows:

11B - Work on Classwork 100 for extra credit if you so choose (see previous posting). We will go over Classworks 91 and 93 as well as the Final Exam Review Part 1 tomorrow.

11CD - Make sure Classworks 92 and 93 are complete and ready for submission. Work on Classwork 100 for extra credit if you so choose (see previous posting). We will go over Classworks 91 and 93 as well as the Final Exam Review Part 1 tomorrow.

In Class - 6/3/14

2014-06-03T08:31:00.000-04:00

Today's task is to complete Classwork "100" for some extra credit (so long as Classwork 92 and 93 are done).

Start by reading about sexual selection here (and be sure to check out the next page) and then here.

You can access the video clips that you need in order to complete the assignment at the following link. I recommend watching the "Dating and Mating Pool," "Women Are Choosier," "Beauty of Symmetry," "Signals of the Flesh," "Attractive Man Funk," and "Sex vs. Love" as those may be most helpful to completing the assignment.

Classwork #100 - The Rules of Attraction?

Answer the following questions to the best of your ability in complete sentences on a separate sheet of paper. Assume that this is being collected and graded.

1. Review – What is sexual selection?

2. Does unconscious sexual selection take place in humans? Or do humans truly choose their partners? Or is it somewhere in the middle? Explain and support your answer. For example, feel free to discuss . . .

- Are human males and females looking for the same characteristics in a mate?

- Do they have the same reproductive goals?

- How does this question/topic relate to genetics or evolution?

6/2/14

2014-06-02T17:23:00.001-04:00

Tonight's homework is to complete Classwork 92 and Classwork 93. Check back for the extra credit Classwork 100! Also, do some reading about the major events during each trimester of pregnancy and include them in today's notes.

Classwork #92 The Birds and the Bees (Sort Of)

Explain (in detail) how the male and female reproductive systems each contribute to sexual reproduction.

Be sure to describe and discuss specific structures, hormones, processes, etc. Think about the smaller goals that each system needs to meet in order to meet its larger goal: producing a unique offspring.

Content Knowledge Checklist (4 Content Points) SCORE: _________

Criteria	4 (Mastery)	3 (Proficient)	2 (Approaching)	1 (Needs Revision)
Demonstrates knowledge of class material	Very consistently demonstrates deep knowledge of related material by correctly using vocabulary terms, referring to structures, processes, etc. and explaining examples thoroughly.	Consistently demonstrates knowledge of related material by correctly using vocabulary terms, referring to structures, processes, etc. and explaining examples clearly.	Demonstrates knowledge of related material by using vocabulary, referring to structures, processes, etc. and explaining examples, but with some errors.	Does not demonstrate sufficient knowledge of class material through errors or lack of usage/ explanation on several occasions.

NOTE: I know how you write. If I get a feeling you are using the Internet as opposed to your notes, then you will receive a zero.

5/30/14

2014-05-31T10:20:00.002-04:00

This weekend's homework is to complete Classwork 91. Friday's check in is rescheduled for Monday. Additionally, Final Exam Review - Part 1 is now available.

Also, as discussed here are the complete notes from class yesterday.

- Review: a hormone is a substance produced by a gland that is released on acts upon another part of the body

o Ex. insulin, testosterone, estrogen

- Important reproductive hormones

o Testosterone – responsible for sperm production and male sex characteristics

o Estrogen – responsible for ovulation (release of an egg from the ovary) and female sex characteristics

o Progesterone – mostly produced by corpus luteum and causes endometrium (lining of uterus) to thicken with blood vessels (to support developing offspring if fertilization happens)

- No fertilization --> drop in progesterone and estrogen levels --> shedding of endometrium lining --> new follicle formation

- Fertilization --> constant level of progesterone & estrogen so no shedding of lining and no new follicle formation

5/29/14

2014-05-29T14:45:00.000-04:00

Tonight's homework is to work on today's notes (useful information here), complete Classwork 90, and look over your notes to prepare for tomorrow's check in.

5/28/14

2014-05-28T15:41:00.001-04:00

Tonight's homework is to complete Classwork 89 and work on your notes from class today. See here for assistance with completing the notes from class today.

Student Opportunities

2014-05-27T23:31:00.000-04:00

Below are some students opportunities that Mr. Z was kind enough to pass along

A scholarship opportunity for college. Read below:

"The QuestBridge National College Match is a college and scholarship application process that helps outstanding low-income high school seniors gain admission and full four-year scholarships to the nation's most selective colleges.

If you are a student who has achieved academic excellence in the face of economic challenges, we encourage you to apply to the National College Match. QuestBridge's partner colleges offer generous financial aid packages that cover 100% of demonstrated financial need, making them very affordable for low-income students."

I encourage you to apply if you meet the criteria of this program! The application doesn't open until August though, so put a reminder into your calendar on your phone or computer to alert you to apply in August.

Hi,

I want to make you aware of a summer program for high school students sponsored by the U.S. Army Defense Threat Reduction Agency. Students will spend two-weeks conducting research with scientists in Aberdeen, MD. This is an all-expense paid, residential program.

The Joint Science and Technology Institute for Students will select current high school students in the United States. The purpose of the program is to expose students to scientific research through hands-on projects, to enable students to work with real-world scientists, and to increase students’ awareness of career opportunities in related fields.

To be eligible, high school students should be US citizens, age 16 by the start of the program, and plan to be enrolled in high school next year. The program dates areJuly 19 – August 1, 2014. All expenses are paid for the students, including travel to and from the program location in Aberdeen, MD.

All students are encouraged to participate, regardless of GPA. A diverse group of students will be selected.

Students may apply at: https://www.orau.org/center-for-science-education/events/jsti/default.html.

If you need additional information, please contact Marolyn Randolph atMarolyn.Randolph@orau.org or 865-576-7560 or Kathy Ketner atKathy.Ketner@orau.org, 865-576-2179.

Thank you for helping to promote this program.

I hope you have great plans for the summer!

Marie

Marie Westfall

Interim Associate Director

Science Education Programs

ORAU

865-576-3425 (office)

865-235-9691 (cell)

865-576-1609 (fax)

Marie.Westfall@orau.org

Discover ORAU Web • Facebook • Twitter • LinkedIn • YouTube

Hello Future Workforce of America,

If you have not already started, soon you will begin thinking about careers, and there will be many factors to consider. I came across an article that discusses the Best Jobs of 2014. When you get a chance, take some time to read over it. You might be surprised to see how many of the "Best Jobs" involve STEM (Science, Technology, Engineering, and Math). Check it out!

5/27/14

2014-05-27T18:29:00.000-04:00

Tonight's homework is to complete Classwork 88. See below.

Classwork #88 Mitosis and Meiosis Practice Questions

Answer all of the following questions to the best of your ability.

1. What is the purpose of sexual reproduction? Remember, use details and be thorough.

2. Describe the goals of meiosis. You answer should include two specific reasons. (HINT: If you need assistance, then look at question #3 for inspiration.)

3. A mouse has 40 chromosomes in its body cells. How many chromosomes would you expect to find in each cell produced by completing meiosis once?

_______________

4. Human egg cells are most similar to human sperm cells in their

A. degree of motility

B. amount of stored food

C. chromosome number

D. shape and size

5. You are a human and your body cells have 23 pairs of chromosomes, giving each a total of 46 chromosomes.

You use mitosis to repair damaged tissue.

a. How many cells are made after one cell goes through mitosis once?

_______________

b. How many chromosomes are found in each offspring cell?

_______________

5 (con’t). You use meiosis to produce sperm or egg cells (depending on your sex).

c. How many cells are made after one cell goes through all of meiosis once?

_______________

d. How many chromosomes are found in each sperm or egg?

_______________

The diagram below illustrates some of the changes that occur during gamete formation.

6. Which graph best represents the changes in the amount of DNA in one of the cells at each stage?

7. Which statement about the gametes represented in the diagram below is correct?

(1) They are produced by females (3) They transport genetic material

(2) They are fertilized in an ovary (4) They are produced by mitosis

8. What is the purpose of “crossing over” during prophase I of meiosis?

9. Describe what happens during metaphase (of mitosis or meiosis).

5/23/14

2014-05-23T21:50:00.001-04:00

This weekend's homework is to complete Classworks 86 and 87. In order to do so, you should 1. see the questions and resources in the previous post (this will help with Classwork 86), 2. watch this video and read this article about meiosis and add to your notes, and then 3. answer the questions for Classwork 87.

Classwork #87 - Meiosis Analysis and Practice Questions

Answer all of the following questions to the best of your ability in complete sentences in the space below and/or on the back. As always, answer thoroughly using details and vocabulary from your notes.

1. How is meiosis related to sexual reproduction? For example, could sexual reproduction happen normally without meiosis? Explain and support your answer by using details and vocabulary.

2. Homologous chromosomes can cross and swap pieces during prophase I. This helps create sperm and egg cells that are unique from the cells of their parents. How is this crossing over and swapping process related to evolution? Explain and support your answer by using details and vocabulary.

3. You are a human and your body cells have 23 pairs of chromosomes, giving each a total of 46 chromosomes. You use meiosis to produce sperm or egg cells (depending on your sex).

a. How many cells are made after one cell goes through all of meiosis once?

b. How many chromosomes are found in each sperm or egg?

4. Look at the image and . . .

a. identify the stage of meiosis.

b. describe what is going to happen next to the chromosomes in the image.

5. What are the potential benefits of sexual reproduction (that uses meiosis)? What are potential drawbacks?

6. How could meiosis and sexual reproduction connect to natural selection and evolution?

5/22/14

2014-05-22T08:24:00.000-04:00

Tonight's homework is as follows:

1. Complete the Do Plants Pass Gas? Lab Report (due Friday)
2. Review your notes.
3. Complete Classwork 86 (due Tuesday). See below for assitance.

Classwork #86 - Cancer and the Cell Cycle

Answer all of the questions to the best of your ability in complete sentences.

1. What is the cell cycle?

2. Summarize what you learned from your research into cancer and the factors that affect it.

3. How is cancer related to the cell cycle?

4. How is cancer related to mitosis?

Use the following resources to learn more about the cell cycle and cancer and help you answer your question as well.

Cancer Animations

Teens Health - comprehensive, but not very detailed
Cancer.gov - detailed and comprehensive
Inside Cancer - comprehensive and very detailed
Cancer Facts and Figures 2014

Potential Questions for Research
- Why does the risk of cancer increase with age?
- How can a tumor actually affect your health?
- How do we treat cancer?
- Why is a cure for cancer so difficult to find?
- Why is radiation both a treatment for and a cause of cancer?
- Could there be a cancer vaccine?

5/21/14

2014-05-21T17:30:00.001-04:00

Tonight's homework is to complete Classwork 85 and it is strongly recommended that you finish watching the Crash Course: Mitosis video. See below.

Classwork #85 Mitosis Comprehension and Practice Questions

Answer all of the questions to the best of your ability in complete sentences.

1. Summarize what happens during mitosis. Include details about chromosomes, the number of chromosomes in offspring cells, the number of cells produced, etc.

2. Does mitosis make unique offspring cells? Why or why not?

3. Label the diagram below and try to identify the stage of mitosis that each onion cell is undergoing.

4. You are a mosquito and your body cells have 3 pairs of chromosomes, giving each a total of 6 chromosomes. You use mitosis to repair damaged tissue.

a. How many cells are made after one cell goes through mitosis once?

b. How many chromosomes are found in each daughter cell?

c. Why is it important that mitosis produces cells with such a number of chromosomes?

d. Draw a picture of how the cell and its chromosomes would be arranged during anaphase.

5a. The goal of life is to produce offspring and pass on genetic information. How does mitosis contribute to this goal?

5b. How does mitosis contribute to this goal in animals (ex. humans) who use sexual reproduction that involves two parents?

6. Why would a process that produces identical offspring cells be potentially beneficial? What are some problems that could result from a process that only creates identical offspring cells?

7. How could mitosis connect to chemical reactions we discussed during the metabolism unit?

Photosynthesis Lab Report Help

2014-05-20T21:44:00.002-04:00

Lab Report 2 – Part 1 “Do Plants Pass Gas?” Lab Report Overview

Below are the main sections that any laboratory report about an experiment (whether it is performed in high school, college, or by professionals) will usually contain. Your lab report about how factors in the environment affect photosynthesis in common house plants will be set up using the general format below. Your completed lab report for this experiment is due in class on Friday, May 23, 2014.

Make sure that you include and use relevant vocabulary terms presented in this unit such as: photosynthesis (and steps within it), glucose, chloroplast, chlorophyll, respiration (and steps within it), carbon dioxide, oxygen, enzymes, light, wavelength, etc.

Introduction – discusses what the purpose of the experiment was and what the experimenters thought would happen

· What should be stated in your introduction?

1. Background information

2. Question(s)

3. Hypothesis with rationale

Methods – discusses what was done in the experiment

· What should be stated in your methods section?

1. Variables and groups

2. Procedure

3. Diagram

Results – shows what happened during the experiment

· What should be included in your results section?

1. Data table

2. Graphs - of carbon dioxide concentrations over time and of the change in carbon dioxide for the different types of light

Discussion – explains what happened during the experiment, why it happened, and what is all means

1. Make inferences based on your observations.

a. Be sure to refer to your data/observations specifically to support your inferences.

b. Be sure that you answer the experimental question that you were investigating. Make sure that your answer to your question is supported clearly by data/observations.

2. Using the data you collected, make a statement connecting your hypothesis to the data. Was the hypothesis supported or not supported by the results of your experiment?

3. Provide your best explanation for the data that you obtained. In other words, what happened in the experiment to give you the data that you recorded?

a. For example, what happened to the plant samples during your trials? Why did each sample look the way that it did? Be sure to use appropriate vocabulary in your answer when explaining what happened to the plants.

b. Be sure that you answer the experimental question that you were investigating.

4. Discuss all sources of error, which may have impacted the results.

a. Discuss each error and the specific impact it may have had on the data and/or how you interpreted it.

b. Discuss the design of the lab set-up – what changes would you make and why?

c. Based on any and all errors – how reliable then, are the results and your evaluation of your hypothesis?

5. Speculate on the broader meaning of your conclusions – what connections can you make? Are there any practical implications or applications of your work/findings?

a. Using your knowledge and your data, answer the essential questions which were:

i. How do organisms obtain and use energy?

b. How can investigations of photosynthesis, respiration, and the factors that affect them connected to the rest of biology or to your own life?

i. Why should people care about photosynthesis and/or respiration? Think about conventional agriculture, vertical farming, bioreactors, biofuels, etc.

Writing Conventions – ensures that your work is easy to read and understand

When writing about experiments in science class, make sure to:

· Write in the 3^rd person and avoid the 1^st person – avoid I, we, my, our, etc. as much as possible and instead use phrases such as “the group” or “the hypothesis.”

· Use only the past tense when writing about experiments you did.

· Write in paragraph form with complete sentences – not in bulleted, outline form with the letters and numbers seen above.

· PROOFREAD

Photosynthesis Lab Report Rubric

Hypothesis Checklist (4 Skill Points) SCORE: _____

Criteria	4 (Mastery)	3 (Proficient)	2 (Approaching)	1 (Needs Revision)
Presents a clear and testable hypothesis that answers investigative question	Hypothesis concisely but clearly establishes a logical, measurable, and testable prediction that explains the relationship between variables and is supported with a logical rationale.	Hypothesis concisely but clearly establishes a logical, testable prediction that explains the relationship between variables and is supported with a logical rationale but may not be obviously measurable.	Hypothesis concisely but clearly establishes a logical, testable, and measurable prediction that explains the relationship between variables but it lacks an explanation OR hypothesis establishes an illogical or incorrect prediction.	Hypothesis neither establishes a clear, logical, testable, and measurable prediction that explains the relationship between variables nor contains adequate rationale.

Analysis Checklist (4 Skill Points) SCORE: _____

Identifies whether or not hypothesis is supported by data.	Specifically states if and to what degree the hypothesis is supported by the data, accounting for complexities and anomalies in the data.	(NONE)	States whether or not the hypothesis is generally supported by the data but does not discuss complexities – ex. data that does not fit trend.	Does not clearly state whether or not the hypothesis is supported by the data
Analyzes data in order to draw and support conclusions	Correctly and clearly states a conclusion about the hypothesis that is supported by discussing multiple pieces of sets of data and sophisticated calculations	Correctly states a conclusion about the hypothesis that is supported by a set of data and calculations	Correctly states a conclusion about the hypothesis that is vague or is supported by vague evidence OR states an incorrect claim with evidence as support	States a conclusion about the hypothesis with little to no evidence

Reflection Checklist (4 Skill Points) SCORE: _____

Identifies relevant sources of error.	Clearly identifies and describes at least one relevant source of error that is NOT simply human error during the experiment.	Identifies and describes one relevant source of error that is NOT simply human error OR clearly describes a source of error that is simply human error during the experiment.	Identifies but does not clearly describe the source of error in the experiment.	Identifies but does not attempt to describe the source of error.
Describes how the data is changed by the error.	Specifically and clearly describes how the data collected was altered by the error.	Clearly describes which data was altered by the error but does not clearly describe how it was altered.	Addresses that the source of error changed the data but does not explain its effect clearly.	Does not address how the source of error changed the data.
Proposes changes to procedure to eliminate/minimize sources of error	Clearly defines a logical change to the procedure that should be made AND clearly explains why it should be made.	Clearly defines a logical change to the procedure that should be made and only acknowledges why it should be done.	Defines a change to the procedure but does not explain the reasoning behind it OR proposes an illogical change but explains its rationale.	Does not propose a logical change to the procedure.

Content Knowledge Checklist (4 Content Points) SCORE: _____

Supplies possible explanation(s) for the data.	Supplies plausible explanation(s) that is thoroughly explained using scientific concepts/ vocabulary from class and logical reasoning	Supplies one plausible explanation that is explained using logical reasoning and vocabulary from class.	Supplies an explanation that while possible, is very implausible and possibly illogical OR states a logical, plausible explanation that does not discuss content/vocabulary from class	Supplies an explanation that is very weak either in terms of logic or connection to class material
Demonstrates knowledge of class material	Very consistently demonstrates deep knowledge of related material by correctly using vocabulary and explaining examples clearly.	Consistently demonstrates knowledge of related material by correctly using vocabulary and explaining examples.	Demonstrates knowledge of related material by using vocabulary and explaining examples, but with some errors.	Does not demonstrate sufficient knowledge of class material through errors or lack of usage/ explanation.

Application Checklist (4 Content Points) SCORE: _____

Answers the essential question	Clearly and thoroughly answers the essential question and supports the detailed answer with evidence from the experiment as well from notes/research/etc.	Clearly answers the essential question and supports the answer with evidence from the experiment OR from notes/research/etc.	Answers the essential question, but the answer is lacking enough detail and/or evidence OR offers an answer that is illogical or inconsistent with evidence from lab or class.	Does not thoroughly answer the essential question.
Discusses applications of the experiment and topic	Identifies and explains multiple detailed examples of how the experiment or concepts/vocabulary related to it can be used in science and/or the real world.	Identifies and explains a detailed example of how the experiments or concepts/vocabulary related to it can be used in science and/or the real world.	Identifies an example of how the experiment can be applied, but does not support it thoroughly.	Identifies an example of the topic’s applications but without support.

Writing Conventions Checklist (4 Work Habit Points) SCORE: _____

Communicates clearly and efficiently.	Very consistently uses clear language and follows grammar and spelling rules (uses 3^rd person, past tense, etc.).	Consistently uses clear language and follows grammar and spelling rules (uses 3^rd person, past tense, etc.).	Mostly uses clear language and follows grammar and spelling rules.	Comprehension is difficult due to lack of proofreading.
Helps reader to understand the experiment.	Thoroughly aids understanding of the experiment with a concise yet detailed procedure, clear data tables, a diagram of the setup, and logical sequencing.	Aids understanding of the experiment with a detailed procedure, clear data tables, and logical sequencing.	Complete understanding is hampered by a lack of completion of the one of the following: detailed procedure, clear data tables, and logical sequencing.	Understanding of the experiment is difficult due to multiple components being missing

Graphing Criteria Checklist (4 Skill Points) SCORE: _____

Labels	£ Provides an informative title £ Labels axes with units
Plotting	£ Ind. & dep. variables graphed on appropriate axes £ Axes use appropriate scales £ Points/bars are plotted correctly
Formatting	£ Uses a ruler to make graph £ Graph is made large and clear

5/20/14

2014-05-20T14:13:00.001-04:00

Tonight's homework is simply to continue working on your lab report, which is due in class on Friday.

5/19/14

2014-05-19T21:03:00.001-04:00

Sorry for the late post. Tonight's homework is just to work on your lab report which is due Friday.

5/16/14

2014-05-16T10:09:00.000-04:00

This weekend's homework is to work on the lab report due next Friday. Specifically, you should analyze your data, draw conclusions, and start thinking about sources of error and how they may have impacted the data. But even more specifically (!), you should do some reading, think about the applications of understanding photosynthesis, and a response to the following, "How can understanding how manipulating light affects photosynthesis benefit humanity?"

Useful Resources
Vertical Farming - verticalfarm.com
Using algae as fuel - smithsonian.com

5/15/14

2014-05-15T10:26:00.000-04:00

Use this link to input your data.

5/14/14

2014-05-14T16:42:00.002-04:00

Tonight's homework is to complete Classwork 84 in preparation for Friday's exam. In addition, I recommend that you work on writing your Methods section based on the work you carried out today and even try to analyze some of the data you collect so far.

Classwork #84 Metabolism Exam Review Questions

Answer each of the following to the best of your ability in complete sentences. Remember, quality responses are detailed, thorough, and correct.

1. What do enzymes do? How do they accomplish their jobs? Be sure to use vocabulary terms from your notes.

2. Label the substrate, active site, and enzyme on the diagram below.

3. How can environmental factors such as heat or pH affect enzymes and their function? (HINT: Think back to the Jell-o lab.)

4. State the correct, complete, basic chemical equation for cellular respiration.

5. Describe the role of each of the reactants in cellular respiration.

6. In three sentences, describe what happens during each stage of cellular respiration.

7. Describe ATP and its role in the cell.

8. State the correct, complete, basic chemical equation for photosynthesis.

9. Describe the role of each of the reactants in photosynthesis.

10a. In two sentences, describe what happens during each stage of photosynthesis.

10b. Identify where in the chloroplast each of the two stages of photosynthesis takes place.

11. Why are the leaves of plants typically green?

12. Why do leaf disks (containing bicarbonate) float after carrying out photosynthesis?

5/13/14

2014-05-13T13:08:00.000-04:00

Tonight's homework is to write and bring in a draft of your introduction and an experimental plan for the "Do Plants Pass Gas?" lab report. Your hypothesis will be submitted in class tomorrow. There is also a metabolism exam on Friday.

5/12/14

2014-05-12T14:07:00.000-04:00

Tonight's homework is to complete Classwork 83. Also, your metabolism exam will take place on Friday. Topics covered will include the basics of chemical reactions, enzymes, photosynthesis, and respiration.

5/8/14

2014-05-08T14:40:00.003-04:00

This weekend's homework is to complete Classwork 82 (what happened to Classwork 81? who knows?). Also, there will be a check-in on respiration and photosynthesis on Monday and a quiz later next week.

Useful Resources
Photosynthesis (Encarta)
Photosynthesis (Scitable)
Photosynthesis (University of Illinois Chicago)

5/7/14

2014-05-07T17:03:00.000-04:00

Tonight's homework is to complete Classwork 80. See below.

Classwork #80 “Forming Our Food: Photosynthesis – Part 1” Analysis Questions

Answer all of the following questions to the best of your ability on another sheet of paper in complete sentences. Use details and vocabulary from your notes and answer thoroughly.

1. Why do plants need light?

2. Describe what happens during photosynthesis.

3. Describe the specific role of water in photosynthesis.

4. Why does photosynthesis involve molecules like ATP and NADPH?

5. How could trees and other plants be used to combat environmental problems like global warming and ocean acidification (conduct research if you are not familiar)?

6. Thinking about what we learned in class today, then why is deforestation (destruction of Earth’s forests) a major problem?

5/6/14

2014-05-06T16:19:00.001-04:00

Tonight's homework is to complete Classwork 79 and can be accessed here.

5/5/14

2014-05-05T15:45:00.001-04:00

Tonight's homework is to complete Classwork 78. And here is another video about fermentation and its products.

Classwork #78 Investigating the Details of Respiration: Part 1

Answer all of the following questions to the best of your ability in complete sentences on another sheet of paper.

1. You are a yeast cell. Describe how you use sugar as a source of energy.

2. Why do humans require oxygen?

3. How do glycolysis and/or fermentation connect to what we’ve discussed about metabolism?

4. What is the advantage of aerobic respiration over anaerobic metabolism in energy production in living organisms?

5. Long-distance runners often talk about training to raise their anaerobic threshold. The anaerobic threshold is the point at which certain muscles do not have enough oxygen to perform aerobic respiration. Hypothesize why you think it is important for competitive runner to raise their anaerobic threshold.

5/2/14

2014-05-02T14:43:00.001-04:00

This weekend's homework is to complete Classwork 77. See the questions and data below.

Average Data for Sections 11B and 11CD

	Concentration of CO₂ at 0 min. (ppm)	Concentration of CO₂ at 20 min. (ppm)
Germinating seeds	1356	1913
Germinating seeds on ice	1105	1321
Dry, dormant seeds	1107	838

Classwork #77 Cellular Respiration Overview

Answer all of the following questions to the best of your ability in complete sentences on another sheet of paper.

1. Draw conclusions based on your observations. Be specific and use vocabulary to create a detailed and thorough answer.

2. Define metabolism and cellular respiration in your own words.

3. So why is it that we breathe out carbon dioxide (as opposed to a different compound)?

4. How are cellular respiration and enzymes connected?

5. How are cellular respiration and homeostasis connected?

6. What do you think would have happened to the respiration reaction(s) you observed if the reaction chamber had been submerged in a bath of boiling water? Explain your answer using examples, details, and/or vocabulary.