Chapter 7

True or false? Unlike animals, which make many ATP by aerobic respiration, plants make all of their ATP by photosynthesis.

Glycolysis starts and ends in the ________ . a. nucleus b. mitochondrion c. plasma membrane d. cytoplasm

Which of the following metabolic pathways require(s) molecular oxygen \(\left(\mathrm{O}_{2}\right) ?\) a. aerobic respiration b. lactate fermentation c. alcoholic fermentation d. all of the above

Which molecule does not form during glycolysis? a. NADH b. pyruvate c. \(\mathrm{FADH}_{2}\) d. ATP

In eukaryotes, aerobic respiration is completed in the ________ . a. nucleus b. mitochondrion c. plasma membrane d. cytoplasm

Which of the following reaction pathways is not part of the second stage of aerobic respiration? a. electron transfer phosphorylation b. acetyl-CoA formation c. Krebs cycle d. glycolysis e. a and d

After Krebs reactions run through ________ cycle(s), one glucose molecule has been completely broken down to \(\mathrm{CO}_{2}\). a. one b. two c. three d. six

In the third stage of aerobic respiration, ________is the final acceptor of electrons. a. Water b. hydrogen c. oxygen d. NADH

________ accepts electrons in alcoholic fermentation. a. Oxygen b. Pyruvat c. Acetaldehyde d. Sulfate

Fermentation pathways make no more ATP beyond the small yield from glycolysis. The remaining reactions serve to regenerate ________. a. FAD b. \(\mathrm{NAD}^{+}\) c. glucose d. oxygen

Most of the energy that is released by the full breakdown of glucose to \(\mathrm{CO}_{2}\) and water ends up in ________. a. NADH b. ATP c. heat d. electrons

Your body cells can break down ________ as a source of energy to fuel ATP production. a. fatty acids b. glycerol c. amino acids d. all of the above

Which of the following is not produced by an animal muscle cell operating under anaerobic conditions? a. heat b. pyruvate c. \(\mathrm{NAD}^{+}\) d. ATP e. lactate f. all are produced

Match the reactions with the events. ________glycolysis ________fermentation ________Krebs cycle ________electron transfer phosphorylation a. ATP, NADH, FADH \(_{2}\) and \(\mathrm{CO}_{2}\) form b. glucose to two pyruvate c. \(\mathrm{NAD}^{+}\) regenerated, little ATP d. \(\mathrm{H}^{+}\) flow via ATP synthases

Match the term with the best description. ________mitochondrial matrix ________pyruvate ________\(\mathrm{NAD}^{+}\) ________mitochondrion ________NADH ________anaerobic a. needed for glycolysis b. inner space c. makes many ATP d. product of glycolysis e. reduced coenzyme f. no oxygen required