Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 8.4, Problem 2SB
Summary Introduction
To review:
The C4 pathway and the method through which this pathway circumvents photorespiration.
Introduction:
Photorespiration affects the rate of photosynthesis in plants. To minimize its effect, plants of the hot and arid region have developed special anatomy and a different pathway of photosynthesis called the C4 pathway. They possess a high number of chloroplasts in their cells.
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Under what environmental conditions does
photorespiration “outcompete" that of the CC?
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What is the benefit of Photorespiration in plants and what problem does it pose in many plants?
What are some of the biological process in which photophosphorylation plays a critical role?
Chapter 8 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 8.1 - What are the two stages of photosynthesis?Ch. 8.1 - In which organelle does photosynthesis take place...Ch. 8.2 - What is the difference in function between the...Ch. 8.2 - Prob. 2SBCh. 8.2 - What is the difference between the linear electron...Ch. 8.3 - What is the reaction that rubisco catalyzes? Why...Ch. 8.3 - How many molecules of carbon dioxide must enter...Ch. 8.4 - Prob. 1SBCh. 8.4 - Prob. 2SBCh. 8.4 - How are carbon fixation and the Calvin cycle...
Ch. 8.5 - How are the reactants and products of...Ch. 8 - An organism exists for long periods by using only...Ch. 8 - Prob. 2TYKCh. 8 - Which of the following is a correct step in the...Ch. 8 - Prob. 4TYKCh. 8 - Prob. 5TYKCh. 8 - Which of the following statements about the C4...Ch. 8 - Prob. 7TYKCh. 8 - The oxygen released by photosynthesis comes from:...Ch. 8 - You bite into a spinach leaf. Which one of the...Ch. 8 - Animal metabolism and plant metabolism are related...Ch. 8 - Discuss Concepts Suppose a garden in your...Ch. 8 - Prob. 12TYKCh. 8 - Discuss Concepts Like other accessory pigments,...Ch. 8 - Prob. 14TYKCh. 8 - Prob. 15TYKCh. 8 - Prob. 16TYKCh. 8 - Photosynthesis directly opposes respiration in...Ch. 8 - Prob. 2ITDCh. 8 - Prob. 3ITDCh. 8 - Prob. 4ITD
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- What Is the Molecular Architecture of PhotosyntheticReaction Centersarrow_forwardHow does the anatomical differences between C3 and c4 leaves facilitate photosynthesis 2) discuss the functional implications of the dominant pigment bandarrow_forwardWhat effect would there be on C3 and C4 plants for increased oxygen levels? Why? Explain its effect in the mechanism of the pathway.arrow_forward
- What is the advantage of the C4 photosynthetic pathway as compared to the conventional C3pathway? How might these advantages influence where these plant species are found?arrow_forwardHow, then, do plants that grow in hot climates ,such as sugar cane, prevent very high rates of wasteful photorespiration?arrow_forwardWhat enzyme fixes CO2 in bundle sheath cell of chloroplasts in Calvin Cycle of C4 plants?arrow_forward
- What is the advantage to plants to have the option of both cyclic and noncyclic pathways for photophosphorylation?arrow_forwardWhat is C2 cycle of photorespiration?arrow_forwardWhat is so special about thylakoid membranes (and chloroplasts in general) that allow it to be the site for photosynthetic activity in plants?arrow_forward
- Plants have evolved by developing mechanisms that promote entry of CO, into the Calvin Cycle (CC) to limit photorespiration when environmental conditions tend to favor the latter. This is because photorespiration 1) is energetically inefficient (consuming more ATP than the CC alone) and 2) it does not produce any sugars that can be "fed" into cellular respiration to produce lots more ATP. A) Under what environmental conditions does photorespiration "outcompete" that of the CC? Specifically, what mechanism is responsible for committing the cell to photorespiration and what type of plant does not have any "safeguards" to ensure that the CC is performed rather than photorespiration? B) Describe the mechanisms employed by two types of plants to minimize photorespiration and ensure that the CC is carried out even when environmental conditions are not in their favor. Be sure to identify 1) the type of plant, 2) its natural environment and how it affects the plant's ability to perform the CC,…arrow_forward43) Which of the following is false? A) C3, C4, and CAM plants use the light dependent reactions to harvest energy from the sun and light independent reactions to turn that energy into sugar. B) C3 plants use photorespiration (as opposed to the Calvin Cycle) when CO2 is low ) C4 plants utilize a specialized carbon fixation enzyme and a unique cell structure to reduce the problems of photorespiration D) CẢM plants perform all of the steps of photosynthesis at night to avoid e photorespirationarrow_forwardWhat is the process of damaging of photosynthetic pigments at very high temperature?arrow_forward
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