ENERGY AND POWER QUIZ

Biotin occurs mainly in combined forms bound to protein through

ε-N-lipoyl - L-lysine

ε-N-lysine moiety

ε-S-lysine moiety

ε-N-biotinyl-L-lysine

TRUE ANSWER : ?
YOUR ANSWER : ?

Ascorbic acid acts as an

oxidizing and reducing agent both

None of these

oxidizing agent

reducing agent

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin K1 was first isolated from alfalalfa and has the phytyl side chain consisting of

nine isoprene units

four isoprene units

four isoprene units

six isoprene units

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Sulfhydryl group

Methyl group

Activated carbon dioxide (CO2)

Ammonia

TRUE ANSWER : ?
YOUR ANSWER : ?

An early sign of retinol deficiencies in man is

xeropthalmia

keratinization

none of these

night blindness

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamins are essential because the organism

can synthesize these compounds partially

can't synthesize these compounds at all

can't synthesize these compounds in the adequate amounts

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Lipoic acid exists in

none of these

oxidized form

oxidized and reduced form both

reduced form

TRUE ANSWER : ?
YOUR ANSWER : ?

The vitamin niacin is part of the __________ molecule.

ferredoxin

pyridoxal phosphate

pyrophosphate

NAD+

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these is a symptom of vitamin A deficiency?

Impaired taste perception

Impaired blood clotting

Osteoporosis

Blindness

TRUE ANSWER : ?
YOUR ANSWER : ?

Acyl carrier protein (ACP) plays an important role in the biosynthesis of

fatty acids

sugars

carbohydrates

amino acids

TRUE ANSWER : ?
YOUR ANSWER : ?

↑