Chapter 9 - Respiration

Question 1

in glycolysis, for each molecule of glucose oxidized to pyruvate

Answer 1

two molecules of ATP are used and four molecules of ATP are produced

Question 2

which of the following normally occurs regardless of whether or not oxygen (O2) is present?

Answer 2

glycolysis

Question 3

during aerobic respiration, H2O is formed; where does the oxygen atom for the formation of the water come from?

Answer 3

molecular oxygen (O2)

Question 4

for each mole of glucose (C6H12O6) oxidized by cellular respiration, how many moles of CO2 are released in the citric acid cycle?

Answer 4

4

Question 5

the final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is

Answer 5

oxygen

Question 6

inside an active mitochondrion, most electrons follow which pathway?

Answer 6

citric acid cycle -> NADH -> electron transport chain -> oxygen

Question 7

during aerobic respiration, which of the following directly donates electrons to the electron transport chain at the lowest energy level?

Answer 7

FADH2

Question 8

for each molecule of glucose that is metabolized by glycolysis and the citric acid cycle, what is the total number of NADH + FADH2 molecules produced?

Answer 8

12

Question 9

starting with one molecule of glucose, the energy-containing products of glycolysis are

Answer 9

2 NADH, 2 pyruvate, and 2 ATP

Question 10

what carbon sources can yeast cells metabolize to make ATP from ADP under anaerobic conditions?

Answer 10

glucose