8. Respiration

Which metabolic pathway is common to both fermentation and cellular respiration of a glucose molecule?

a. The citric acid cycle

b. The electron transport chain

c. Glycolysis

d. Reduction of pyruvate to lactate

Which of the following correctly describe the fermentation pathway? Select True or False for each statement.

T/FIt includes a reaction that oxidizes NADH to NAD⁺.

T/FIt synthesizes ATP by substrate-level phosphorylation.

T/FIt includes a reaction that reduces NAD⁺ to NADH.

T/FIt synthesizes electron acceptors, so that cellular respiration can continue.

Which of the following is a distinction between cellular respiration and fermentation?

a. The transfer of from intermediate substrates to ADP

b. The movement of H+ across a membrane down its concentration gradient

c. The splitting of glucose into two molecules of pyruvate

d. Electrons moving through the electron transport chain

In which of the following is the first molecule becoming reduced to the second molecule?

a. Pyruvate → acetylCoA

b. Pyruvate → lactate

c. Glucose → pyruvate

d. NADH + H+ →NAD+ + 2H

Anaerobic respiration ________.

a. Generates proteins for muscles to use.

b. Occurs in yeast cells only.

c. Does not use oxygen as the final electron acceptor.

d. Uses glycolysis, the citric acid cycle, and the electron transport chain.