VITAMINS AND COENZYMES QUIZ

The absence of ascorbic acid in the human diet gives rise to

rickets

cataract

beri-beri

pernicious anemia

TRUE ANSWER : ?
YOUR ANSWER : ?

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

amino acids

fatty acids

sugars

carbohydrates

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 : ?

The vitamin niacin is part of the __________ molecule.

pyridoxal phosphate

ferredoxin

NAD+

pyrophosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

A deficiency of Vitamin K results in a decreased level of

fibrinogen

prothrombin

thrombin

fibrin

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these is a symptom of vitamin A deficiency?

Blindness

Impaired taste perception

Osteoporosis

Impaired blood clotting

TRUE ANSWER : ?
YOUR ANSWER : ?

Lipoic acid exists in

none of these

oxidized form

reduced form

oxidized and reduced form both

TRUE ANSWER : ?
YOUR ANSWER : ?

The reductant, NADH, transfers the electrons via a flavo-proteins to the specific disulfide (S-S) protein to form a dithiol (SH,SH) protein which converts vitamin

B12(Co) to B12(Co2+)

B12(Co2+)to B12(Co+)

B12(Co2+)to B12(Co)

B12(Co+)to B12(Co2+)

TRUE ANSWER : ?
YOUR ANSWER : ?

A deficiency of niacin causes

scurvy

cataract

anemia

pellagra

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Activated carbon dioxide (CO2)

Methyl group

Sulfhydryl group

Ammonia

TRUE ANSWER : ?
YOUR ANSWER : ?

↑