12th Grade > Biology
RESPIRATION IN PLANTS MCQs
Total Questions : 62
| Page 7 of 7 pages
Answer: Option B. -> Pyruvate dehydrogenase
:
B
Pyruvic acid synthesized in glycolysis must enter inside the mitochondria, where oxidative decarboxylation occurs in the presence of NAD+and coenzyme-A. This results in the formation of acetyl CoA which can enter the Kreb's cycle. This reaction is catalyzed by pyruvate dehydrogenase.
:
B
Pyruvic acid synthesized in glycolysis must enter inside the mitochondria, where oxidative decarboxylation occurs in the presence of NAD+and coenzyme-A. This results in the formation of acetyl CoA which can enter the Kreb's cycle. This reaction is catalyzed by pyruvate dehydrogenase.
Answer: Option D. -> All of the above
:
D
When carbohydrates are not available, other substrates are used for respiration. Proteins are broken down to amino acids and the amino acids can be used for respiration. Some amino acids enter the oxidative phosphorylation pathway as acetyl CoA, while others form pyruvate, oxaloacetate, alpha-ketoglutarate etc. Fatty acids basically enter citric acid cycle as acetyl CoA.
:
D
When carbohydrates are not available, other substrates are used for respiration. Proteins are broken down to amino acids and the amino acids can be used for respiration. Some amino acids enter the oxidative phosphorylation pathway as acetyl CoA, while others form pyruvate, oxaloacetate, alpha-ketoglutarate etc. Fatty acids basically enter citric acid cycle as acetyl CoA.
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