Campbell Biology: Concepts & Connections, Books a la Carte Edition (8th Edition)
8th Edition
ISBN: 9780321946683
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Chapter 7, Problem 5TYK
The reactions of the Calvin cycle are not directly dependent on light, but they usually do not occur at night. Why? (Explain your answer.)
a. It is often too cold at night for these reactions to take place.
b. Carbon dioxide concentrations decrease at night.
c. The Calvin cycle depends on products of the light reactions.
d. Plants usually close their stomata at night.
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Ribulose bisphosphate carboxylase, which might be the most abundant enzyme on Earth, is part of which photosynthetic reaction?
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Compare the light reaction with the calvin cycle of phosynthesis in plants,which of the following requires NADPH?
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Carbon dioxide is required for which of the following processes in photosynthesis?
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Chapter 7 Solutions
Campbell Biology: Concepts & Connections, Books a la Carte Edition (8th Edition)
Ch. 7 - Complete this summary map of photosynthesis.Ch. 7 - In photosynthesis, __________ is oxidized and...Ch. 7 - Which of the following are produced by reactions...Ch. 7 - When light strikes chlorophyll molecules in the...Ch. 7 - The reactions of the Calvin cycle are not directly...Ch. 7 - Which of the following does not occur during the...Ch. 7 - Why is it difficult for C3 plants to carry out...Ch. 7 - How is photosynthesis similar in C4 plants and CAM...Ch. 7 - Compare and describe the roles of CO2 and H2O in...Ch. 7 - Explain why a poison that inhibits an enzyme of...
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- Typically the CO2 necessary for photosynthesis enters through the stomata of the plant leaves suppose petroleum jelly was used to coat the leaves out of this tomato blocked or closed a) what effect will this have on the light reactions in these leaf cells b) what effect will this have on the Calvin cycle in these leaf cellsarrow_forwardCompare the light reaction with the calvin cycle of phosynthesis in plants,which of the following requires glucose? a. light reaction alone b. the calvin cycle alone c. both the ligh reaction and calvin cycle d. neither the light nor the calvin cyclearrow_forwardCompare the light reaction with the calvin cycle of phosynthesis in plants,which of the following requires three carbon sugars? a. light reaction alone b. both light and calvin cycle c. the calvin cycle alone d.neither the light nor the calvinarrow_forward
- Explain briefly why the following ideas are false. a. Photosynthesis is the food-making process done by plants. b The Calvin cycle was called the dark reactions because it can only take place in the absence of light. c. Photosynthesis can only be powered by sunlight.arrow_forwardThrough light reductions, ADP is phosphorylated into ATP via chemiosmosis. What is this process called? a. Reduction b. Calvin Cycle c. Photophosphorylation d. Photosynthesisarrow_forwardPlants undergo both photosynthesis and cellular respiration. Why don’t plants simply use the ATP pro¬duced in the light reactions of photosynthesis to drive cellular processes? A) The ATP produced during photosynthesis is chemically different from the ATP produced during cellular respiration and cannot be used for anabolic reactions B) ATP cannot be stockpiled so the plants would have no energy during non-daylight hours C) The plants have no way of getting the ATP made during photosynthesis out of the chloroplasts to the rest of the cell D) Plants rely on cellular respiration to remove excess O2 and prevent photorespirationarrow_forward
- What is the difference between the cyclic and noncyclic pathways of photosynthesis? a The cyclic pathway uses electron transport. b The cyclic pathway is light-dependent. c The noncyclic pathway produces NAPDH. d The noncyclic pathway produces ATP.arrow_forwardHow is the difference made up in the Calvin cycle when more ATP is used than NADPH? A. The Calvin cycle occurs half as often as the light-dependent reaction B. The cyclic pathway creates more ATP C. Additional ATP is created from glucose D. Excess NADPH is reused in the light reactionarrow_forwardHow are the NADPH and G3P molecules made during photosynthesis similar? a. They are both end products of photosynthesis. b. They are both substrates for photosynthesis. c. They are both produced from carbon dioxide. d. They both store energy in chemical bonds.arrow_forward
- Under certain conditions, the thylakoid membrane of the chloroplast may become 'leaky’ allowing ions to freely diffuse across it. A consequence of that is carbon fixation will stop. Why would the Calvin Cycle stop? A. Because oxidation of water by PSII would stop. B. Because reduction of NADP+ to NADPH would stop. C. Because the stroma would contain ADP but no ATP. D. Because levels of G3P in the stroma would increase.arrow_forwardIf 30 molecules of CO2 enter the Calvin Cycle,a. How many molecules of phosphoglycerate (PGA) will be produced? b. How many molecules of glyceraldehyde phosphate (PGAL) leave the cycle? c. How many molecules of ribulose bisphosphate (RuBP) will be produced? d. How many molecules of ATP will be utilized?arrow_forwardExplain why each of the following misconceptions about photosynthesis is false: a. Only plants are autotrophs. b. Plants do not need cellular respiration because they carry out photosynthesis. c. Chlorophyll is the only plant pigment.arrow_forward
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Photosynthesis & Respiration | Reactions | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=3XIyweZg6Sw;License: Standard YouTube License, CC-BY