addition of electrons and loss of hydrogen ions. C) loss of electrons and additi
ID: 180996 • Letter: A
Question
addition of electrons and loss of hydrogen ions. C) loss of electrons and addition of hydrogen ions. D) E loss of electrons and either addition or loss of hydrogen ions. 44. NAD A) is derived from vitamin E. B) is an electron source for biological oxidation reactions. C) is a coenzyme acceptor of electrons and a hydrogen ion. D) releases a phosphate to become NADH. E) is the reduced form of the B vitamin niacin. whereas the net output of ATP is 45. The gross output of ATP from glycolysis is A) 2:1 B) 4: 2 C) 4; 1 D) 6: 4 E) 2; 4 46. During glycolysis, aldolase catalyzes the breakdown of fructose-1, 6 bisphosphate to produce A) phosphoenolpyru vate B) dihydroxyacetone phosphate. C) fructose-6-phosphate D) A and B. 47. During the process of glycolysis, which of the following substrates donates electrons to NAD and adds Pi to form 1.3-bisphosphoglycerate? A)3-phosphoglycerate B) 2-phosphoglycerate C) glyceraldehyde-3-phosphate D glucose E glucose-6-phosphate 48. 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. C) oxidative phosphorylation.Explanation / Answer
44. C
NAD+ACCEPTS anelectron and hydrogen ion to form NADH . It isa coenzyme present in plant cell.
45. A 2:1
The gross output is 4 atp and 2 molecules of pyruvate. Each molecule of pyruvate requires 1 atp so net becomes 2 atp
46. B
It is a fructose bisphosphate aldolase that catalyses fructose 1 6 bisphosphate into dihydroxyacetone phosphate and glyceraldehyde 3 phosphate
47. A. 3 phosphoglycerate adds one phosphate at 1 position to form 1 3 biphosphoglycerate
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