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 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.
The oxidation of NADH is favorable because it involves:
a)
Separation of like charges.
b)
Conversion of non-polar to polar bonds.
c)
Increased resonance.
d)
Conversion of liquid to gas.
Which of the following statements is NOT true about Krebs Cycle?
a.
Krebs cycle is composed of 8-step enzymatic reactions.
b.
For every CO2 released in the cycle, NADH is produced.
c.
Succinyl-CoA allows the phosphorylation of GDP (Guanosine Diphosphate)
d.
The carbon atoms from the glucose that enters the cycle are released from the mitochondrion immediately.
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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- In photosynthesis, CO2 carbon atoms are transformed to glucose carbon atoms. (a) Are the CO2 carbon atoms being oxidized or reduced in this process? (b) Do the CO2 carbon atoms move to a higher or lower energy state in this process?arrow_forwardWhich of the following statements is TRUE of the electron transport chain (ETC)? A. The movement of electrons down the ETC drives the formation of a proton (H+) gradient. B. The movement of H+ ions through ATP synthase drives the transfer of electrons down the ETC. C. The movement of electrons down the ETC drives the movement of ADP and phosphate through ATP synthase. D. The movement of H+ ions across the inner membrane of the mitochondria drives the transfer of electrons down the ETC.arrow_forwardWhich of the following statements is true? A. The citric acid cycle occurs in the mitochondria matrix B. The citric acid cycle occurs in the cytosol C. Electron transport chain and ATP synthase are in the cytosol D. Oxidative phosphorylation occurs in the mitochondria matrixarrow_forward
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- 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 is the most likely explanation for a situation where the ELECTRON TRANSPORT CHAIN (ETC) does not produce ATP in the presence of oxygen. a. A toxin has disrupted the Krebs Cycle b. A toxin has altered a protein in the ETC c. Too much NADH has been produced in the Krebs Cycle d. Too much NADH has been produced in Glycolysisarrow_forwardThe effect of high levels of ADP is to_inv_cellular respiration. a. increase the activity of specific enzymes b. decrease the activity of specific enzymes c. have no effect on the activity of specific enzymes d. slow down the pathwayarrow_forward
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