Enzymes - Mock Test 23

Question 221

Which one of the following transfers acyl groups?

A) Thiamine pyrophosphate B) Lipomide C) ATP D) NADH

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Question 222

Both Acyl carrier protein ( ACP ) of fatty acid synthetase and coenzyme ( CoA ) are?

A) Contain reactive phosphorylated B) Contain thymidine C) Contain phosphopantetheine reactive groups D) Contain cystine reactive groups

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Question 223

All the following statements about acetyl CoA carboxylase are true except?

A) It is activated by citrate B) It is inhibited by palmitoyl CoA C) It can undergo covalent modification D) Its dephosphorylated form is inactive

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Question 224

Acetyl CoA carboxylase is activated by?

A) Citrate B) Insulin C) Both A and B D) None of these

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Question 225

The enzyme regulating extramitochondrial fatty acid synthesis is?

A) Thioesterase B) Acetyl CoA carboxylase C) Acyl transferase D) Multi-enzyme complex

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Question 226

β-oxidation of fatty acids is inhibited by?

A) NADPH B) Acetyl CoA C) Malonyl CoA D) None of these

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Question 227

The major site for elongation of medium chain fatty acids is?

A) Mitochondria B) Cytosol C) Microsomes D) All of these

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Question 228

Formation of acetyl CoA from pyruvate for de novo synthesis of fatty acids requires?

A) Pyruvate dehydrogenase complex B) Citrate synthetase C) ATP citrate lyase D) All of these

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Question 229

Acetyl CoA required for de novo synthesis of fatty acids is obtained from?

A) Breakdown of existing fatty acids B) Ketone bodies C) Acetate D) Pyruvate

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Question 230

The maximum possible chain length of fatty acids formed in the pathway of de novo synthesis is?

A) 16 Carbon atoms B) 18 Carbon atoms C) 20 Carbon atoms D) 24 Carbon atoms

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