BIOL231 Exam #3 (Ch. 11 and 13) Version B 1) Which enzyme uses ATP to phosphoryl
ID: 253637 • Letter: B
Question
BIOL231 Exam #3 (Ch. 11 and 13) Version B 1) Which enzyme uses ATP to phosphorylate a substrate? A) dehydrogenase B) isomerase C) aldolase D) kinase 2) During the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate and phosphoenolpyruvate, a phosphate group is added to ATP to generate ATP. The mechanism for ATP production in this reaction is A) substrate-level phosphorylation. B) product-level phosphorylation. C) oxidative phosphorylation. D) anabolic phosphorylation. 3) Each of the following is a citric acid cycle products except A) oxolacetate B) CO2. C) ATP D) NAD. 4) In eukaryotes, pyruvate is converted to acetyl CoA A) in the cellular cytosol. B) in the mitochondrial matrix. C) in the intermembrane space. D) at the inner mitochondrial membrane. 5) Pyruvate is converted to acetyl CoA through the action of A) pyruvate decarboxylase. B) pyruvate dehydrogenase complex. C) aconitase. D) citrate synthase. . 6) Each of the following is a function of membranes except A) defining cell and organelle boundaries. B) sites for specific biochemical functions. C) information storage. D) regulation of transport. . 7) Of the following molecules, which would you predict diffuses most casily across membranes? A) water B) glucose C) oxyger D) hydrogen ionsExplanation / Answer
1 - The Correct answer is option D that is kinase.
Kinase uses ATP to phosphorylate a substrate.
2 - The correct answer is option A that is substrate level phosphorylation as when ADP is converted to ATP it is called substrate level phosphorylation.
When ATPs are produced by ETC then it is known as oxidative phosphorylation.
3 - The correct answer is option D that is NAD+ because it is a substrate not a product of TCA cycle.
4 - The correct answer is option B that is in the mitochondrial matrix.
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