VITAMINS AND COENZYMES QUIZ

Lipoic acid is a co-factor of the

α-ketoglutaric dehydrogenase

di-hydroorotate dehydrogenase

both (a) and (b)

pyruvic dehydrogenase

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin-D deficiency can cause

rickets

cataract

beri-beri

pernicious anemia

TRUE ANSWER : ?
YOUR ANSWER : ?

The most prominent role that tocopherol has in in-vitro systems is as a strong

oxidizing agent

reducing agent

antioxidants

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The vitamin riboflavin is part of the __________ molecule.

pyrophosphate

ferredoxin

pyridoxal phosphat

FAD

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these is a symptom of vitamin A deficiency?

Impaired taste perception

Blindness

Impaired blood clotting

Osteoporosis

TRUE ANSWER : ?
YOUR ANSWER : ?

An enzyme, L-folate reductase reduces folic acid to

hydrofolic acid

trihydrofolic acid

tetrahydrofolic acid

dihydrofolic acid

TRUE ANSWER : ?
YOUR ANSWER : ?

The occurrence of metals such as iron or molybdenum in some flavoproteins can

de-stabilize the semiquinone

stabilize the semiquinone

form chelation

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Ascorbic acid acts as an

None of these

oxidizing and reducing agent both

reducing agent

oxidizing agent

TRUE ANSWER : ?
YOUR ANSWER : ?

Who discovered vitamin C (ascorbic acid)?

Albert Szent-Gyorgyi

Linus Pauling

Kerry Mull is

Paul Berg

TRUE ANSWER : ?
YOUR ANSWER : ?

Main function of insulin hormone is to

decrease glycogen in liver

decrease blood sugar

increase glycogen in liver

increase blood sugar

TRUE ANSWER : ?
YOUR ANSWER : ?

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