Vitamins - Mock Test 23

Question 221

Conversion of retinal into ritonal requires the presence of?

A) NADH B) NADPH C) FADH2 D) Lipoic acid

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Question 222

Conversion of β-carotene into retinal requires the presence of?

A) β-Carotene dioxygenase B) Bile salts C) Molecular oxygen D) All of these

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Question 223

Two molecules of vitamin A can be formed from 1 molecule of?

A) α-Carotene B) β-Carotene C) γ-Carotene D) All of these

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Question 224

Precursor of Vitamin A is?

A) α-Carotene B) β-Carotene C) γ-Carotene D) All of these

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Question 225

The molecule of vitamin A1 contains?

A) Benzene ring B) β-Ionone ring C) β-Carotene ring D) None of these

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Question 226

Laboratory diagnosis of vitamin B12 deficiency can be made by measuring the urinary excretion of?

A) Xanthurenic acid B) Formiminoglutamic acid C) Methylmalonic acid D) Homogentisic acid

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Question 227

A vitamin which can be synthesized by human beings is?

A) Thiamin B) Niacin C) Folic acid D) Cyanocobalamin

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Question 228

Anaemia can occur due to the deficiency of all the following except?

A) Thiamin B) Pyridoxine C) Folic acid D) Cyanocobalamin

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Question 229

The vitamin having the highest daily requirement among the following is?

A) Thiamin B) Ribovflavin C) Pyridoxine D) Ascorbic acid

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Question 230

Daily requirement of vitamin C in adults is about?

A) 100 mg B) 25 mg C) 70 mg D) 100 mg

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