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1. 2. Many people believe that forests are net producers of oxygen. However, for net production of oxygen gas to occur, photosynthesis must be occurring faster than cellular respiration. The following equations summarize the overall reactions of photosynthesis and respiration: 6 CO₂ + 6H₂O → C6H12O6 + 6 0₂ C6H12O6 + 6 O₂ → 6 COz+ 6 HO a) If there were a net production of oxygen gas in an ecosystem, what chemical would you also expect to accumulate in the ecosystem? Explain. b) Predict how a net production of oxygen gas in an ecosystem would affect the total biomass of the ecosystem over time. c) If the rate of photosynthesis were reduced on a global scale, what impact might this have on climate change? Discuss the term "Homeostasis" under the following headings: a) Definition b) The mechanism of "negative feedback". Describe how this type of feedback will achieve homeostasis and use the following words to illustrate: monitor, control centre, regulator. c) The homeostatic control of temperature in the body.

1. 2. Many people believe that forests are net producers of oxygen. However, for net production of oxygen gas to occur, photosynthesis must be occurring faster than cellular respiration. The following equations summarize the overall reactions of photosynthesis and respiration: 6 CO₂ + 6H₂O → C6H12O6 + 6 0₂ C6H12O6 + 6 O₂ → 6 COz+ 6 HO a) If there were a net production of oxygen gas in an ecosystem, what chemical would you also expect to accumulate in the ecosystem? Explain. b) Predict how a net production of oxygen gas in an ecosystem would affect the total biomass of the ecosystem over time. c) If the rate of photosynthesis were reduced on a global scale, what impact might this have on climate change? Discuss the term "Homeostasis" under the following headings: a) Definition b) The mechanism of "negative feedback". Describe how this type of feedback will achieve homeostasis and use the following words to illustrate: monitor, control centre, regulator. c) The homeostatic control of temperature in the body.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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1. 2. 3. 4. 5. 6. Many people believe that forests are net producers of oxygen. However, for net production of oxygen gas to occur, photosynthesis must be occurring faster than cellular respiration. The following equations summarize the overall reactions of photosynthesis and respiration: 6 COz+6 HO C6H12O6 + 6 0₂ C6H12O6 + 6 O2 →6 CO2 + 6 H₂O a) If there were a net production of oxygen gas in an ecosystem, what chemical would you also expect to accumulate in the ecosystem? Explain. b) Predict how a net production of oxygen gas in an ecosystem would affect the total biomass of the ecosystem over time. c) If the rate of photosynthesis were reduced on a global scale, what impact might this have on climate change? Discuss the term "Homeostasis" under the following headings: a) Definition b) The mechanism of "negative feedback". Describe how this type of feedback will achieve homeostasis and use the following words to illustrate: monitor, control centre, regulator. c) The homeostatic control of temperature in the body. The waved albatross feeds exclusively on marine organisms and has no access to fresh water. It has specialized nasal glands to excrete excess salt. Consider the cellular mechanisms that might be involved in the productions of the highly concentrated salt solution released by this bird. a) Would the production of the concentrated salt solution be an active process or a passive process? Explain your reasoning. b) What type of membrane transport mechanisms might be involved? c) What problems might arise if the albatross were unable to rid itself of excess salt? Consider the following statement: "An understanding of chemistry is essential to a solid understanding of biological processes." State whether or not you agree with this statement and why. Use at least two specific examples from this course to justify your response. a) Describe, using a diagram or point form notes, what is happening during transcription and translation of protein synthesis. Indicate where these events take place in the cell. b) An error occurs in the transcription of the original master strand of DNA. At the very first base pair, a guanine is substituted for cytosine. State the possible effects on the polypeptide and its functions. Electron transport chains operate in both cellular respiration and photosynthesis. State the purpose of the ETC and describe its role in chemiosmosis
Transcribed Image Text:1. 2. 3. 4. 5. 6. Many people believe that forests are net producers of oxygen. However, for net production of oxygen gas to occur, photosynthesis must be occurring faster than cellular respiration. The following equations summarize the overall reactions of photosynthesis and respiration: 6 COz+6 HO C6H12O6 + 6 0₂ C6H12O6 + 6 O2 →6 CO2 + 6 H₂O a) If there were a net production of oxygen gas in an ecosystem, what chemical would you also expect to accumulate in the ecosystem? Explain. b) Predict how a net production of oxygen gas in an ecosystem would affect the total biomass of the ecosystem over time. c) If the rate of photosynthesis were reduced on a global scale, what impact might this have on climate change? Discuss the term "Homeostasis" under the following headings: a) Definition b) The mechanism of "negative feedback". Describe how this type of feedback will achieve homeostasis and use the following words to illustrate: monitor, control centre, regulator. c) The homeostatic control of temperature in the body. The waved albatross feeds exclusively on marine organisms and has no access to fresh water. It has specialized nasal glands to excrete excess salt. Consider the cellular mechanisms that might be involved in the productions of the highly concentrated salt solution released by this bird. a) Would the production of the concentrated salt solution be an active process or a passive process? Explain your reasoning. b) What type of membrane transport mechanisms might be involved? c) What problems might arise if the albatross were unable to rid itself of excess salt? Consider the following statement: "An understanding of chemistry is essential to a solid understanding of biological processes." State whether or not you agree with this statement and why. Use at least two specific examples from this course to justify your response. a) Describe, using a diagram or point form notes, what is happening during transcription and translation of protein synthesis. Indicate where these events take place in the cell. b) An error occurs in the transcription of the original master strand of DNA. At the very first base pair, a guanine is substituted for cytosine. State the possible effects on the polypeptide and its functions. Electron transport chains operate in both cellular respiration and photosynthesis. State the purpose of the ETC and describe its role in chemiosmosis
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