Question

1. which of the following rows identifies the reactants and products of aerobic cellular respiration?

row reactants products
a carbon dioxide and water oxygen, glucose, and atp
b. carbon dioxide and glucose oxygen, water, and atp
c. oxygen and glucose carbon dioxide, water, and atp
d. oxygen and water carbon dioxide, glucose, and atp

1. which of the following rows identifies the molecules or elements that are reduced and oxidized, respectively, during aerobic cellular respiration?

row reduced material oxidized material
a. nad+ glucose
b. oxygen nadph
c. water carbon dioxide
d. glucose oxygen

1. at the end of glycolysis, most of the energy from the original glucose molecule is stored as chemical potential energy within

a. co2 b. pyruvate (three - carbon sugar)
c. atp d. nadh

1. the end product of glycolysis reacts with a molecule specialized to carry it into the krebs cycle. when this reaction occurs, the end product of glycolysis is converted into a compound called

a. pyruvate b. acetyl - coa c. coenzyme a d. fadh2

1. which of the following events does not occur during the krebs cycle?

a. oxidation of fad b. reduction of nad+
c. release of carbon dioxide d. production of atp

1. the final electron acceptor in the electron transport chain (or oxidative phosphorylation), during aerobic cellular respiration is

a. h2o b. atp c. co2 d. o2

Explanation:

• Question 21: Aerobic cellular respiration uses oxygen and glucose as reactants and produces carbon - dioxide, water, and ATP.
• Question 22: In aerobic cellular respiration, glucose is oxidized and NAD⁺ is reduced to NADH.
• Question 23: At the end of glycolysis, most of the energy from glucose is stored in pyruvate.
• Question 24: The end - product of glycolysis (pyruvate) is converted to acetyl - CoA to enter the Krebs cycle.
• Question 25: FAD is reduced to FADH₂ in the Krebs cycle, not oxidized.
• Question 26: Oxygen is the final electron acceptor in the electron transport chain of aerobic cellular respiration.

Answer:

• 21. C. oxygen and glucose, carbon dioxide, water, and ATP
• 22. A. NAD⁺, glucose
• 23. B. pyruvate (three - carbon sugar)
• 24. B. acetyl - CoA
• 25. A. oxidation of FAD
• 26. D. O₂