Question

Texts: 44. A bacterial mutant lacking acetyl-CoA carboxylase would be expected to be unable to synthesize which of the following? a. fatty acids b. cholesterol c. oxaloacetate 45. Which of the following is NOT a fermentation end-product? a. propionic acid b. lactic acid c. pyruvic acid 46. In glycolysis, ATP is created by a. Photophosphorylation b. substrate-level phosphorylation c. acetoacetate d. the chemiosmotic mechanism e. the pentose phosphate pathway 47. Which of the following best explains the usefulness of the production of ethanol by yeast cells under anaerobic conditions? a. Ethanol keeps the electron transport system functioning b. Yeast would be unable to activate the enzymes of the Krebs cycle without ethanol c. The process generates oxygen, which is required for glycolysis d. The process regenerates NAD+, which is required for glycolysis 48. Organisms can synthesize ATP by oxidative phosphorylation when they a. ferment b. oxidize glucose to pyruvate c. pass electrons from the oxidation of chlorophyll through an electron transport system d. pass electrons to oxygen through an electron transport system containing cytochrome 49. Entner-Doudoroff pathway is not found in a. aerobic prokaryotes b. anaerobic prokaryotes c. eukaryotes 50. Spore formation a. occurs only in response to adverse environmental conditions b. is a method of reproduction because more than one spore may be formed in each cell c. cannot be regarded as a method of multiplication d. all are correct

Texts:

44. A bacterial mutant lacking acetyl-CoA carboxylase would be expected to be unable to synthesize which of the following?
a. fatty acids
b. cholesterol
c. oxaloacetate

45. Which of the following is NOT a fermentation end-product?
a. propionic acid
b. lactic acid
c. pyruvic acid

46. In glycolysis, ATP is created by
a. Photophosphorylation
b. substrate-level phosphorylation
c. acetoacetate
d. the chemiosmotic mechanism
e. the pentose phosphate pathway

47. Which of the following best explains the usefulness of the production of ethanol by yeast cells under anaerobic conditions?
a. Ethanol keeps the electron transport system functioning
b. Yeast would be unable to activate the enzymes of the Krebs cycle without ethanol
c. The process generates oxygen, which is required for glycolysis
d. The process regenerates NAD+, which is required for glycolysis

48. Organisms can synthesize ATP by oxidative phosphorylation when they
a. ferment
b. oxidize glucose to pyruvate
c. pass electrons from the oxidation of chlorophyll through an electron transport system
d. pass electrons to oxygen through an electron transport system containing cytochrome

49. Entner-Doudoroff pathway is not found in
a. aerobic prokaryotes
b. anaerobic prokaryotes
c. eukaryotes

50. Spore formation
a. occurs only in response to adverse environmental conditions
b. is a method of reproduction because more than one spore may be formed in each cell
c. cannot be regarded as a method of multiplication
d. all are correct

Added by Clinton L.

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