VITAMINS AND COENZYMES QUIZ

Selenium is an essential component of the enzyme glutathione peroxidase which

oxidizes toxic hydoperoxycompounds in tissues

reduces toxic hydoperoxycompounds in tissues

None of these

scavenges toxic hydoperoxycompounds in tissues

TRUE ANSWER : ?
YOUR ANSWER : ?

A deficiency of thiamin produces the disease known as

anemia

scurvy

cataract

beri-beri

TRUE ANSWER : ?
YOUR ANSWER : ?

In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.

cyanocobalamin

5-6 dimethylbenzimidazole

hydroxycobalamin

adenine

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these hormones is a catecholamine?

Tetraiodothyronine

Follitropin

Norepinephrine

Tetrahydrofolate

TRUE ANSWER : ?
YOUR ANSWER : ?

Biotin occurs mainly in combined forms bound to protein through

ε-N-lipoyl - L-lysine

ε-N-biotinyl-L-lysine

ε-S-lysine moiety

ε-N-lysine moiety

TRUE ANSWER : ?
YOUR ANSWER : ?

Lipoic acid is a co-factor of the

both (a) and (b)

di-hydroorotate dehydrogenase

α-ketoglutaric dehydrogenase

pyruvic dehydrogenase

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamins are essential because the organism

can't synthesize these compounds in the adequate amounts

can't synthesize these compounds at all

can synthesize these compounds partially

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin-C is considered as a

none of these

fat soluble

water soluble

fat and water soluble

TRUE ANSWER : ?
YOUR ANSWER : ?

Who discovered vitamin C (ascorbic acid)?

Paul Berg

Linus Pauling

Kerry Mull is

Albert Szent-Gyorgyi

TRUE ANSWER : ?
YOUR ANSWER : ?

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

plants

animal

plants and animals both

none of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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