VITAMINS AND COENZYMES QUIZ

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(Co) to B12(Co2+)

B12(Co2+)to B12(Co)

TRUE ANSWER : ?
YOUR ANSWER : ?

Main function of insulin hormone is to

decrease blood sugar

decrease glycogen in liver

increase blood sugar

increase glycogen in liver

TRUE ANSWER : ?
YOUR ANSWER : ?

The symptoms of retinol excess are

nausea

weakness

bone fragility

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

A deficiency of Vitamin K results in a decreased level of

fibrin

fibrinogen

prothrombin

thrombin

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these is a vitamin A precursor?

Pyridoxine

Thiamine

Cobalamin

Beta-Carotene

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 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

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these hormones is a catecholamine?

Tetrahydrofolate

Norepinephrine

Follitropin

Tetraiodothyronine

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these is a symptom of vitamin A deficiency?

Osteoporosis

Impaired blood clotting

Impaired taste perception

Blindness

TRUE ANSWER : ?
YOUR ANSWER : ?

β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by

plants

plants and animals both

none of these

animal

TRUE ANSWER : ?
YOUR ANSWER : ?

A fat-soluble vitamin that regulates blood clotting is

vitamin K

niacin

vitamin A

vitamin C

TRUE ANSWER : ?
YOUR ANSWER : ?