VITAMINS AND COENZYMES QUIZ

The vitamin riboflavin is part of the __________ molecule.

pyrophosphate

pyridoxal phosphat

ferredoxin

FAD

TRUE ANSWER : ?
YOUR ANSWER : ?

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

animal

plants and animals both

none of these

plants

TRUE ANSWER : ?
YOUR ANSWER : ?

What metal ion is specifically bound by vitamin B12?

Cobalt

Zinc

Iron

Copper

TRUE ANSWER : ?
YOUR ANSWER : ?

The absence of ascorbic acid in the human diet gives rise to

beri-beri

rickets

cataract

pernicious anemia

TRUE ANSWER : ?
YOUR ANSWER : ?

A deficiency of niacin causes

anemia

pellagra

cataract

scurvy

TRUE ANSWER : ?
YOUR ANSWER : ?

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

stabilize the semiquinone

all of these

de-stabilize the semiquinone

form chelation

TRUE ANSWER : ?
YOUR ANSWER : ?

An early sign of retinol deficiencies in man is

keratinization

none of these

night blindness

xeropthalmia

TRUE ANSWER : ?
YOUR ANSWER : ?

An example of a digestive hormone is

amylase

lipase

gastrin

pepsin

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of these hormones is a catecholamine?

Tetraiodothyronine

Follitropin

Tetrahydrofolate

Norepinephrine

TRUE ANSWER : ?
YOUR ANSWER : ?

Lipoic acid is a co-factor of the

both (a) and (b)

pyruvic dehydrogenase

α-ketoglutaric dehydrogenase

di-hydroorotate dehydrogenase

TRUE ANSWER : ?
YOUR ANSWER : ?

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