VITAMINS AND COENZYMES QUIZ

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

more deep in color 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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these is a vitamin A precursor?

Beta-Carotene

Cobalamin

Thiamine

Pyridoxine

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin-C is considered as a

water soluble

fat and water soluble

fat soluble

none of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin-D deficiency can cause

pernicious anemia

beri-beri

rickets

cataract

TRUE ANSWER : ?
YOUR ANSWER : ?

The vitamin niacin is part of the __________ molecule.

NAD+

ferredoxin

pyridoxal phosphate

pyrophosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

An example of a digestive hormone is

amylase

lipase

pepsin

gastrin

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(Co2+)to B12(Co)

B12(Co2+)to B12(Co+)

B12(Co) to B12(Co2+)

B12(Co+)to B12(Co2+)

TRUE ANSWER : ?
YOUR ANSWER : ?

A fat-soluble vitamin that regulates blood clotting is

niacin

vitamin K

vitamin A

vitamin C

TRUE ANSWER : ?
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What metal ion is specifically bound by vitamin B12?

Cobalt

Zinc

Iron

Copper

TRUE ANSWER : ?
YOUR ANSWER : ?

Main function of insulin hormone is to

increase glycogen in liver

decrease glycogen in liver

decrease blood sugar

increase blood sugar

TRUE ANSWER : ?
YOUR ANSWER : ?

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