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, Problem 6TYK
Which of the following statements about the C4 cycle is incorrect?
a. CO2 initially combines with PEP.
b. PEP carboxylase catalyzes a reaction to produce oxaloacetate.
c. Oxaloacetate transfers electrons from NADPH and is reduced to malate.
d. Less ATP is used to run the C4 cycle than the C3 cycle.
e. The cycle runs when O2 concentration is high.
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Which of the following statements about the TCA cycle is INCORRECT?
a.
All reactions of the TCA cycle take place in the cytosol.
b.
The energy released in the TCA cycle is mainly stored in the reduced electron carriers NADH and FADH2.
c.
The TCA cycle can recover much more energy than homolactic fermentation.
d.
Under aerobic conditions the TCA cycle is used to oxidize pyruvate.
e.
The TCA cycle is also called the citric acid cycle after the product of the first reaction catalyzed by pyruvate dehydrogenase.
Which of the following statements about
the TCA cycle is INCORRECT?
O a. The TCA cycle can recover much more energy
than homolactic fermentation.
b. All reactions of the TCA cycle take place in the
mitochondria.
C.
The energy released in the TCA cycle is mainly
stored in the reduced electron carriers NADH and
FADH₂.
O d. Under anaerobic conditions the TCA cycle is used
to oxidize pyruvate.
Oe. The TCA cycle is also called the citric acid cycle
after the product of the first reaction catalyzed by
pyruvate dehydrogenase.
In which of the given steps of TCA cycle one C is lost from substrate in the form of CO2 as well as a molecule of NAD+ is reduced?
a.Oxalosuccinic acid to a-ketoglutaric acid
b.Isocitrate to oxalosuccinic acid
c.Malic acid to oxaloacetic acid
d.a-ketoglutaric acid to succinyl CoA
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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- Which of the following statements concerning the location of the metabolic pathways is correct? a. All reactions of the glycolysis take place in the mitochondria. b. All reactions of the TCA cycle take place in the mitochondria. c. Some reactions of the TCA cycle take place in the cytosol, and some in mitochondria. d. Some reactions of the glycolysis take place in the cytosol, and some in mitochondria.arrow_forwardOne of the allosteric molecules of Hemoglobin is 2,3-BPG. This molecule is formed in the glycolysis cycle. During which of the following conversions could it be shunted out (diverted) to be formed? a. 3-phosphoglycerate to 2-phosphoglycerate b. 1,3--bisphosphoglycerate to 2-phosphoglycerate c. 1,3-bisphosphoglycerate to 3-phosphoglyceratearrow_forwardWhich of the following statements is CORRECT regarding the pentose phosphate pathway? a. It has two reactions that produce NADPH in its oxidative phase. b. The pentose phosphate pathway is also called hexose diphosphate shunt. c. The pathway generates FADH2. d. NAPH is produced in the non-oxidative phase of the pathway.arrow_forward
- Which of the following statements is MOST ACCURATE? A. The oxidation of NADH in the mitochondrial matrix results in the transfer of 1 electron to the electron transport chain. B. The reduction of NADH in the mitochondrial matrix results in the transfer of 1 electron to the electron transport chain. C. The reduction of NADH in the mitochondrial matrix results in the transfer of 2 electrons to the electron transport chain. D. The oxidation of NADH in the cytoplasm results in the transfer of 1 electron to the electron transport chain. E. The oxidation of NADH in the mitochondrial matrix results in the transfer of 2 electrons to the electron transport chain.arrow_forwardWhich of the following statements is/are FALSE for the Krebs’ cycle? A. It is an amphibolic process. B. All nutrients are oxidized to CO2 and H2O. C. It occurs in the mitochondria. D. Involves acids with 3 carbonyl groups.arrow_forwardWhich of the following statements about FAD is FALSE? a. More ATP is produced from the high-energy electrons carried by FADH2 than from those of NADH b. Electrons stored in FADH2 are used in oxidative phosphorylation c. FADH2 has more chemical potential energy than FAD d. FADH2 enters the electron transport chain at Complex 2 e. FAD is reduced into FADH2 during the Citric Acid Cyclearrow_forward
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