Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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What are the roles of ATP and NADPH in photosynthesis?
a. ATP and NADPH are forms of chemical energy produced from the light dependent reactions to be used in the light independent reactions that produce sugars.
b. ATP and NADPH are forms of chemical energy produced from the light independent reactions, to be used in the light dependent reactions that produce sugars.
c. ATP and NADPH are forms of chemical energy produced from the light dependent reactions to be used in the light independent reactions that produce proteins.
d. ATP and NADPH are forms of chemical energy produced from the light dependent reactions to be used in the light independent reactions that use sugars as reactants.
In which parts of the Calvin cycle are high energy phosphate groups donated by ATP to boost the energy of reactions?
A.
formation of G3P and regeneration of RuBP
B.
regeneration of RuBP and synthesis of PGA
C.
synthesis of PGA and oxidation of NADPH
D.
oxidation of NADPH and formation of G3P
How 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 reaction
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- Which part of the Calvin cycle would be affected if a cell could not produce the enzyme RuBIsCO?arrow_forwardWhat two products result from photosynthesis? a. water and carbon dioxide b. water and oxygen c. glucose and oxygen d. glucose and carbon dioxidearrow_forwardPlants produce oxygen when they photosynthesize. Where does the oxygen come from? a. splitting water molecules b. ATP synthesis c. the electron transport chain d. chlorophyllarrow_forward
- In the carbon reduction phase of the Calvin cycle, electrons from NADPH are donated to a metabolic intermediate to form G3P molecules. Which statement is NOT true regarding G3P? A. G3P molecules are involved in the regeneration of RuBP. B. G3P molecules affect the activity of the enzyme rubisco. C. G3P molecules have more potential energy than PGA molecules. D. G3P molecules are used to synthesize glucose and other sugars.arrow_forwardWhat is the role of NADPH in photosynthesis? a. used in the Calvin cycle b. All of the choices C. absorbs light energy. d. is the primary electron acceptor in the reaction center of PSI e. produces ATP during the electron transport chain of the light reactionsarrow_forwardRibulose bisphosphate carboxylase, which might be the most abundant enzyme on Earth, is part of which photosynthetic reaction? A. the Hill reaction B. the light-independent reaction C. photosystem II D. the light-dependent reaction E. photosystem Iarrow_forward
- Which statement about the light reactions of photosynthesis and cellular respiration is correct? a. Both reactions occur in the cell cytoplasm b. plants do not require mitochondria because they produce ATP via photosynthesis c. ATP is produced as a result of the actions of an electron transport chain in both processes d. Light reactions and cellular respiration produce the same waste products e. the final electron acceptor in the light reactions is oxygenarrow_forwardWhat is the molecule that leaves the Calvin cycle to be converted into glucose?a. ADPb. G3Pc. RuBPd. 3-PGAarrow_forwardDuring photosynthesis, ATPS are produced by what process? A. photophosphorylation B. all of the choices C. oxidative phosphorylation D. substrate-level phosphorylationarrow_forward
- What happens when light hits the pigments, P680 and P700. during the light-dependent reactions? A. Excited electrons are passed to electron acceptors B. Glucose is produced C. Carbon fixation occurs D. Electrons are fused to form ATParrow_forwardDetermine the order of the steps in photosynthesis and how they are interconnected. a. Light-Dependent Reactionsb. Calvin Cycle (Light-Independent Reactions)arrow_forwardWhen oxygen gas is released as a result of photosynthesis, it is a direct byproduct of what process? a. splitting of water molecules b. the electron transfer system in the photosystems c. chemiosmosis d. reducing of NADP+arrow_forward
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