VITAMINS AND COENZYMES QUIZ

The prosthetic group biotin is a carrier of which type of molecule?

Ammonia

Activated carbon dioxide (CO2)

Sulfhydryl group

Methyl group

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamins are essential because the organism

can synthesize these compounds partially

None of these

can't synthesize these compounds in the adequate amounts

can't synthesize these compounds at all

TRUE ANSWER : ?
YOUR ANSWER : ?

Biotin occurs mainly in combined forms bound to protein through

ε-S-lysine moiety

ε-N-lipoyl - L-lysine

ε-N-biotinyl-L-lysine

ε-N-lysine moiety

TRUE ANSWER : ?
YOUR ANSWER : ?

Dihydroorotate dehydrogenase contains

2 flavins and 4 atoms of iron per molecule

4 flavins and 4 atoms of iron per molecule

4 flavins and 2 atoms of iron per molecule

2 flavins and 2 atoms of iron per molecule

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these molecules is vitamin H?

None of these

Carnitine

Biotin

Folic acid

TRUE ANSWER : ?
YOUR ANSWER : ?

Main function of insulin hormone is to

decrease glycogen in liver

increase glycogen in liver

increase blood sugar

decrease blood sugar

TRUE ANSWER : ?
YOUR ANSWER : ?

β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by

animal

none of these

plants and animals both

plants

TRUE ANSWER : ?
YOUR ANSWER : ?

The disease Beriberi is due to a dietary deficiency in

vitamin B6 (pyridoxine)

vitamin B1 (thiamine)

vitamin B2 (riboflavin)

vitamin B12

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin B12 (Cobalamin) is only synthesized by

fishes

animals

plants

micro-organisms

TRUE ANSWER : ?
YOUR ANSWER : ?

Ascorbic acid acts as an

oxidizing and reducing agent both

oxidizing agent

reducing agent

None of these

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YOUR ANSWER : ?

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