VITAMINS AND COENZYMES QUIZ

A deficiency of Vitamin K results in a decreased level of

thrombin

prothrombin

fibrinogen

fibrin

TRUE ANSWER : ?
YOUR ANSWER : ?

The vitamin niacin is part of the __________ molecule.

ferredoxin

pyrophosphate

NAD+

pyridoxal phosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

In one iron-metalloflavoprotein, the iron is present as a

flavin moiety

heme-protein

both (a) and (b)

nonheme type

TRUE ANSWER : ?
YOUR ANSWER : ?

The vitamin riboflavin, which occurs as a yellow pigment in egg yolk and milk become

colorless on oxidation and regained its color on reduction with Zn in acid

colorless on reduction with Zn in acid and regained its color on re-oxidation

more deep in color on oxidation and regained its color on reduction with Zn in acid

more deep in color on reduction with Zn in acid and regained its color on re-oxidation

TRUE ANSWER : ?
YOUR ANSWER : ?

Who discovered vitamin C (ascorbic acid)?

Linus Pauling

Paul Berg

Albert Szent-Gyorgyi

Kerry Mull is

TRUE ANSWER : ?
YOUR ANSWER : ?

Lipoic acid is a co-factor of the

di-hydroorotate dehydrogenase

pyruvic dehydrogenase

both (a) and (b)

α-ketoglutaric dehydrogenase

TRUE ANSWER : ?
YOUR ANSWER : ?

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

sugars

amino acids

carbohydrates

fatty acids

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin B12 (Cobalamin) is only synthesized by

micro-organisms

animals

plants

fishes

TRUE ANSWER : ?
YOUR ANSWER : ?

What metal ion is specifically bound by vitamin B12?

Cobalt

Copper

Iron

Zinc

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are reduced coenzymes?

Coenzyme A and ubiquinone

NAD+ and FAD

NADH and FADH2

ATP and GTP

TRUE ANSWER : ?
YOUR ANSWER : ?