Vitamins - Mock Test 38

Question 371

On exposure to light rhodopsin forms?

A) All trans-retinal B) Cis-retinal C) Retinol D) Retinoic acid

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Question 372

Retinoic acid participates in the synthesis of?

A) Iodopsin B) Rhodopsin C) Glycoprotein D) Cardiolipin

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Question 373

Retinal is a component of?

A) Iodopsin B) Rhodopsin C) Cardiolipin D) Glycoproteins

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Question 374

An important function of vitamin A is?

A) To act as coenzyme for a few enzymes B) To play an integral role in protein synthesis C) To prevent hemorrhages D) To maintain the integrity of epithelial tissue

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Question 375

Deficiency of Vitamin A causes?

A) Xeropthalmia B) Hypoprothrombinemia C) Megaloblastic anemia D) Pernicious anemia

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Question 376

One manifestation of vitamin A deficiency is?

A) Painful joints B) Night blindness C) Loss of hair D) Thickening of long bones

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Question 377

The normal serum concentration of vitamin A in mg/100 ml is?

A) 5–10 B) 15–60 C) 100–150 D) 0–5

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Question 378

Retinol is transported in blood bound to?

A) Aporetinol binding protein B) α2-Globulin C) β-Globulin D) Albumin

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Question 379

Lumirhodopsin is stable only at temperature below?

A) –10°C B) –20°C C) –40°C D) –50°C

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Question 380

The international unit of vitamin A is equivalent to the activity caused by?

A) 0.3 µg of Vitamin A alcohol B) 0.344 µg of Vitamin A alcohol C) 0.6 µg of Vitamin A alcohol D) 1.0 µg of Vitamin A alcohol

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