Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 5, Problem 10RQ
Which statement correctly describes carbon fixation?
a. the conversion of
b. the use of RUBISCO to form 3-PGA
c. the production of carbohydrate molecules from G3P
d. the formation of RuBP from G3P molecules
e. the use of ATP and NADPH to reduce
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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 oxygen
What biosynthetic pathway involves photosynthesis?
A. biosynthesis of membrane lipids
B. biosynthesis of amino acids
C. biosynthesis of carbohydrates
D. biosynthesis of fatty acids
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
Chapter 5 Solutions
Concepts of Biology
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- Which event in the Calvin cycle would be the LEAST affected by a malfunction in the electron transport system? A. synthesis of G3P B. production of ADP C. regeneration of RuBP D. production of 3-PGAarrow_forwardWhat specific reaction cannot occur due to the presence of cyanide? A.Transfer of electrons to co-enzymes B.Inability to strip a carbon from pyruvate C.Transfer of electrons to and between carrier proteins D.Addition of a phosphate onto ADP to make ATParrow_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
- How does the process of photosynthesis provide evidence for the Law of Conservation of Mass? A. The total mass of glucose created at the end of photosynthesis equals the amount of carbon dioxide used. B. In photosynthesis the total amount of carbon dioxide and water used to produce energy and oxygen will equal the total mass. В. C. In photosynthesis the total amount of glucose and oxygen produced will equal the total amount of water and carbon dioxide initially used. D. The total mass will not change in photosynthesis since equal amounts of oxygen and water are produce when equal amounts of energy and carbon dioxide used. 3.arrow_forwardWhat 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.arrow_forwardWhich two processes lead directly to the production of large amounts of ATP by the enzyme ATP synthase? A. The electron transport chain B. Fermentation C. The Krebs cycle D. Glycolysis It needs two answer there can be two answer alsoarrow_forward
- Which step of the cellular respiration pathway can take place in the absence of oxygen? A.Glycolysis B.Kreb’scycle C.Electron transport chain D.Fermentationarrow_forwardIn 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 effect would a decrease on sulfur assimilation have in plants? Select one: a. a decrease in protein synthesis b. a decrease in glutamine concentration c. an increase in photosynthesis d. an increase in glutamine concentration e. an increase in glutathione concentrationarrow_forward
- During photosynthesis, ATPS are produced by what process? A. photophosphorylation B. all of the choices C. oxidative phosphorylation D. substrate-level phosphorylationarrow_forwardWhich of the below is required for photosynthesis? a. Carbon dioxide b. Oxygen c. Simple sugarsarrow_forwardHow would a ubiquinone inhibitor directly affect the ATP yield? a. By increasing the electron transport rate to a fraction of 1/2 b. By limiting the hydrogen protons pumped to a fraction of 1/4 c. By pumping additional hydrogen protons to a fraction of 1/2 d. By disabling the entire electron transport chain and chemiosmotic systemarrow_forward
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