VITAMINS AND COENZYMES QUIZ

The vitamin riboflavin is part of the __________ molecule.

pyrophosphate

FAD

pyridoxal phosphat

ferredoxin

TRUE ANSWER : ?
YOUR ANSWER : ?

Lipoic acid is a co-factor of the

both (a) and (b)

pyruvic dehydrogenase

di-hydroorotate dehydrogenase

α-ketoglutaric dehydrogenase

TRUE ANSWER : ?
YOUR ANSWER : ?

The vitamin niacin is part of the __________ molecule.

ferredoxin

NAD+

pyridoxal phosphate

pyrophosphate

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.

hydroxycobalamin

cyanocobalamin

5-6 dimethylbenzimidazole

adenine

TRUE ANSWER : ?
YOUR ANSWER : ?

E.coli ACP has its molecular weight as around

90,000

39000

19000

9000

TRUE ANSWER : ?
YOUR ANSWER : ?

What metal ion is specifically bound by vitamin B12?

Zinc

Cobalt

Iron

Copper

TRUE ANSWER : ?
YOUR ANSWER : ?

The symptoms of retinol excess are

all of these

nausea

weakness

bone fragility

TRUE ANSWER : ?
YOUR ANSWER : ?

A fat-soluble vitamin that regulates blood clotting is

niacin

vitamin C

vitamin A

vitamin K

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Activated carbon dioxide (CO2)

Methyl group

Ammonia

Sulfhydryl group

TRUE ANSWER : ?
YOUR ANSWER : ?

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

plants and animals both

plants

none of these

animal

TRUE ANSWER : ?
YOUR ANSWER : ?

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