VITAMINS AND COENZYMES QUIZ

A fat-soluble vitamin that regulates blood clotting is

vitamin C

vitamin K

vitamin A

niacin

TRUE ANSWER : ?
YOUR ANSWER : ?

Ascorbic acid acts as an

None of these

reducing agent

oxidizing and reducing agent both

oxidizing agent

TRUE ANSWER : ?
YOUR ANSWER : ?

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

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

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

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 hormones is a catecholamine?

Follitropin

Tetraiodothyronine

Tetrahydrofolate

Norepinephrine

TRUE ANSWER : ?
YOUR ANSWER : ?

In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.

adenine

cyanocobalamin

5-6 dimethylbenzimidazole

hydroxycobalamin

TRUE ANSWER : ?
YOUR ANSWER : ?

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

four isoprene units

nine isoprene units

six isoprene units

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are reduced coenzymes?

Coenzyme A and ubiquinone

NADH and FADH2

NAD+ and FAD

ATP and GTP

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Methyl group

Sulfhydryl group

Ammonia

Activated carbon dioxide (CO2)

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin-C is considered as a

water soluble

none of these

fat soluble

fat and water soluble

TRUE ANSWER : ?
YOUR ANSWER : ?

Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at

either end via two disulfide bonds

both ends by two disulfide bonds

either end via a single disulfide bond

both ends by one disulfide bond

TRUE ANSWER : ?
YOUR ANSWER : ?