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Questions and Answers
Which molecule is oxidized during the citric acid cycle?
Which molecule is oxidized during the citric acid cycle?
What is produced from 2 Acetyl CoA during the citric acid cycle?
What is produced from 2 Acetyl CoA during the citric acid cycle?
Which of the following statements is true regarding NADH and FADH2?
Which of the following statements is true regarding NADH and FADH2?
What is the primary location of the citric acid cycle within the cell?
What is the primary location of the citric acid cycle within the cell?
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Which molecules are reduced during the citric acid cycle?
Which molecules are reduced during the citric acid cycle?
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What is the process called when protons move back across the selectively permeable membrane from high concentration to low concentration?
What is the process called when protons move back across the selectively permeable membrane from high concentration to low concentration?
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Which sequence correctly represents the flow of electrons during aerobic cellular respiration?
Which sequence correctly represents the flow of electrons during aerobic cellular respiration?
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What is the net ATP production from cellular respiration, considering the given values for NADH and FADH2?
What is the net ATP production from cellular respiration, considering the given values for NADH and FADH2?
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Which type of fermentation occurs in mammals in the absence of oxygen?
Which type of fermentation occurs in mammals in the absence of oxygen?
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During fermentation, what is the key purpose of regenerating NAD+?
During fermentation, what is the key purpose of regenerating NAD+?
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What role does NAD+ play in redox reactions?
What role does NAD+ play in redox reactions?
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What is oxidation defined as in the context of redox reactions?
What is oxidation defined as in the context of redox reactions?
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What does an oxidizing agent do during a redox reaction?
What does an oxidizing agent do during a redox reaction?
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Which of the following correctly describes the flow of energy through living systems?
Which of the following correctly describes the flow of energy through living systems?
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What defines an energy shell in an atom?
What defines an energy shell in an atom?
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Which statement about reduction in a redox reaction is accurate?
Which statement about reduction in a redox reaction is accurate?
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How is energy from the sun ultimately utilized in living organisms?
How is energy from the sun ultimately utilized in living organisms?
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What change occurs to NAD+ when it accepts an electron?
What change occurs to NAD+ when it accepts an electron?
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Which process generates the most ATP per glucose molecule?
Which process generates the most ATP per glucose molecule?
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What is the final product of alcoholic fermentation?
What is the final product of alcoholic fermentation?
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Which pathway occurs in the absence of oxygen?
Which pathway occurs in the absence of oxygen?
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In which process is NAD+ used as an input during glycolysis?
In which process is NAD+ used as an input during glycolysis?
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Which of the following does NOT require oxygen as an input?
Which of the following does NOT require oxygen as an input?
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What is the primary purpose of fermentation?
What is the primary purpose of fermentation?
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Which molecule accepts electrons in the initial glycolysis process?
Which molecule accepts electrons in the initial glycolysis process?
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Which pathway produces lactate as a final product?
Which pathway produces lactate as a final product?
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Which example represents the reduced forms of the two major electron carriers?
Which example represents the reduced forms of the two major electron carriers?
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Why do some marathon runners attempt to 'carbo load' before a big race?
Why do some marathon runners attempt to 'carbo load' before a big race?
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Which of the following summarizes the net final products of glycolysis?
Which of the following summarizes the net final products of glycolysis?
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Tracing the metabolism of one glucose molecule, how many carbon atoms are available for further oxidation at the completion of the pyruvate oxidation stage?
Tracing the metabolism of one glucose molecule, how many carbon atoms are available for further oxidation at the completion of the pyruvate oxidation stage?
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Once processed through the citric acid cycle, the acetyl-CoA molecules from a single glucose molecule produce:
Once processed through the citric acid cycle, the acetyl-CoA molecules from a single glucose molecule produce:
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What happens to the pH in the intermembrane space as hydrogen ions are moved into it?
What happens to the pH in the intermembrane space as hydrogen ions are moved into it?
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Which of the following creates a proton gradient in cellular respiration?
Which of the following creates a proton gradient in cellular respiration?
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How do protons move through ATP synthase?
How do protons move through ATP synthase?
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What occurs when oxygen combines with protons and electrons?
What occurs when oxygen combines with protons and electrons?
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What happens to the pH of the mitochondrial matrix in the absence of oxygen?
What happens to the pH of the mitochondrial matrix in the absence of oxygen?
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What could be added to restore citric acid cycle activity in the absence of oxygen?
What could be added to restore citric acid cycle activity in the absence of oxygen?
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Which effect might be expected from the presence of oligomycin, an antibiotic that blocks ATP synthase?
Which effect might be expected from the presence of oligomycin, an antibiotic that blocks ATP synthase?
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Which molecule carries the smallest amount of potential energy derived from glucose during cellular respiration?
Which molecule carries the smallest amount of potential energy derived from glucose during cellular respiration?
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