Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 8, Problem 6TYU
In mechanism, photophosphorylation is most similar to
- A. substrate-level phosphorylation in glycolysis.
- B. oxidative phosphorylation in
cellular respiration . - C. carbon fixation.
- D. reduction of NADP+
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Plants are less susceptible to cyanide poisoning than animals because
A. Plant ETC membranes are deficient in transporter proteins for the cyanide ion.
B. The plant ETC has an alternative route for the reduction of oxygen that involves the “alternative oxidase” enzyme.
C. Plants can rely on photosynthesis alone to generate proton gradients that are used to power secondary metabolic pathways.
D. Plants utilize a pentose phosphate pathway to generate energy.
What fundamental difference sets apart anaerobic respiration from aerobic respiration?
a.
Anaerobic respiration does not have Krebs Cycle.
b.
Anaerobic respiration does not have an electron transport chain.
c.
Anaerobic respiration involves substrate-level phosphorylation only.
d.
Anaerobic respiration utilizes electronegative compounds such as nitrates as final electron acceptor.
The direct formation of ATP by the transfer of a phosphate group from a donor molecule to ADP is called ________.
a. substrate-level phosphorylation
b. oxidative phosphorylation
c. cyclic photophosphorylation
d. noncyclic photophosphorylation
e. indigenous phosphorylation
Chapter 8 Solutions
Campbell Biology in Focus
Ch. 8.1 - How do the CO2 molecules used in photosynthesis...Ch. 8.1 - How did the use of an oxygen isotope help...Ch. 8.1 - WHAT IF? The Calvin cycle requires ATP and NADPH,...Ch. 8.2 - What color of light is least effective in driving...Ch. 8.2 - In the light reactions, what is the initial...Ch. 8.2 - Prob. 3CCCh. 8.3 - MAKE CONNECTIONS How are the large numbers of ATP...Ch. 8.3 - WHAT IF? Explain why a poison that inhibits an...Ch. 8.3 - Prob. 3CCCh. 8.4 - Prob. 1CC
Ch. 8 - The light reactions of photosynthesis supply the...Ch. 8 - Which of the following sequences correctly...Ch. 8 - How is photosynthesis similar in C4, plants and...Ch. 8 - Which of the following statements is a correct...Ch. 8 - Which of the following does not occur during the...Ch. 8 - In mechanism, photophosphorylation is most similar...Ch. 8 - Prob. 7TYUCh. 8 - To synthesize one glucose molecule, the Calvin...Ch. 8 - SCIENCE, TECHNOLOGY, AND SOCIETY Scientific...Ch. 8 - DRAW IT The following diagram represents an...Ch. 8 - Prob. 11TYUCh. 8 - Prob. 12TYUCh. 8 - FOCUS ON ENERGY AND MATIER Life is solar powered....Ch. 8 - SYNTHESIZE YOUR KNOWLEDGE Watermelon snow in...
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- Which of the following statements concerning ATP synthesis is NOT true? a. The open conformation of the ATP synthase is for releasing ATP. b. The gamma subunit in the stalk responds to the flow of H+ and rotates the assembly counterclockwise and thus change the conformations of the active site to synthesize ATP. c. The tight conformation of the ATP synthase is for converting ADP and phosphate to ATP. d. The loose conformation of the ATP synthase is for binding ADP and phosphate. e. Ten protons are required to catalyze the rotation of the subunits so that one ATP is synthesized. Clear my choicearrow_forwardYou have discovered a novel peptide that, when administered to plant cells, spontaneously inserts into the thylakoid membranes and forms a channel that lets protons cross the membrane. You treat plant cells growing normally with your peptide. Which of the following statements correctly describes the effect on photosynthesis shortly after the addition of the peptide? Select all that are true. a. The rate of Glyceraldehyde 3-phosphate synthesis will decrease b. The rate of oxygen production will be unaffected c. The rate of Glyceraldehyde 3-phosphate synthesis will increase d. The rate of oxygen production will decrease e. The rate of oxygen production will increase f. The rate of Glyceraldehyde 3-phosphate synthesis will be unaffectedarrow_forwardThe link between electron transport and ATP synthesis a. is a high-energy intermediate like phosphoenol pyruvate. b. is the transfer of electrons to ATP synthase. c. is a proton gradient. d. depends on the absence of oxygen.arrow_forward
- Which of the following statements is TRUE? Select one: a. The immediate product of the light energy absorbed by the P680 reaction center is used to produce NADPH. b. In cyclic photophosphorylation, the chlorophyll is reduced by electrons liberated from water molecules. c. The O2 gas produced during photosynthesis is derived from CO2. d. In noncyclic photophosphorylation, electrons from water are used directly for the reduction of P700. e. All of the statements are false.arrow_forwardIn chemiosmosis, discover the most direct source of energy that is used to convert ADP + Pi to ATP. * A. energy released as electrons flow through the electron transport system. B. energy released from substrate-level phosphorylation. C. energy released from ATP synthase pumping hydrogen ions against their concentration gradient. D. energy released from movement of protons through ATP synthase.arrow_forwardThe above product water molecules are generated in which eukaryotic cell compartment?A. the mitochondrial matrix (site of the Krebs cycle)B. the thylakoid membrane of chloroplasts (site of photosystems I and II)C. the chloroplast stroma (site of the Calvin cycle)D. the inner mitochondrial membrane (site of electron transport)E. the cytoplasm (site of glycolysis)arrow_forward
- In what aerobic respiration process does oxygen is needed to accept electron from complex IV? A. Chemiosmosis B. Electron transport chain C. Glycolysis D. Krebs cycle Both cellular respiration and photosynthesis produce adenosine triphosphate. How many ATPs are produced in cellular respiration? A. 26-30 B. 30-32 C. 34-38 D. 40-44 Which of the following are the types of fermentation? A. alcoholic and lactic acid B. aerobic and fermentation C. cellular respiration and photosynthesis D. glycolysis cellular respiration and photosynthesisarrow_forwardCompare ATP production in the citric acid cycle to the electron transport chain, or aerobic respiration. A. Both processes use oxidative phosphorylation. B. Both processes use substrate-level phosphorylation. C. The citric acid cycle uses substrate-level phosphorylation, and the electron transport chain uses oxidative phosphorylation. D. The citric acid cycle uses oxidative phosphorylation, and the electron transport chain uses substrate-level phosphorylation.arrow_forwardWhich of the following descriptions about photorespiration is not correct? Select one: a. Rubisco binds O2 instead of CO2. b. Carbon dioxide is released without producing ATP. c. It limits damaging products of light reactions that build up in the absence of the Calvin cycle at low CO2 concentrations. d. Peroxisomes and mitochondria rearrange and split the compound made by rubisco to fix CO2. e. It occurs in hot and dry conditions.arrow_forward
- Oxidative decarboxylation a. Do not occur in the TCA cycle. b. Involve loss of CO2 and the production of NADH. c. Involve loss of CO2 and the production of NAD. d. Involve loss of CO2 and the production of FADH2.arrow_forwardThe ultimate source of energy in our planet is sunlight. In the first stage of photosynthesis, light energy is captured in chlorophyll-containing reaction centers (PSII and PSI). What is the first step in the capture of light energy at PSII? a. The energy carriers ATP and NADPH + H+ are synthesized. b. CO2 reacts with the C5 sugar ribulose-1,5-bis-phosphate in the first step of the Calvin cycle. c. Starch is synthesized. d. H2O is photolyzed and its electrons are captured by special chlorophyll molecules. e. Sucrose is synthesized from glucose and fructose.arrow_forwardIf 25% of the photosynthetic electron transport chains in a chloroplast change from non-cyclic to cyclic photophosphorylation, this will: Select one: a. Decrease the rate of production of ATP and NADPH. b. Increase the rate of production of ATP and NADPH. c. Increase ATP production relative to NADPH production. d. Increase NADP production relative to ATP production. e. Increase NADPH production relative to ATP production.arrow_forward
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