VITAMINS AND COENZYMES QUIZ

An example of a digestive hormone is

amylase

pepsin

lipase

gastrin

TRUE ANSWER : ?
YOUR ANSWER : ?

Lipoic acid is a co-factor of the

di-hydroorotate dehydrogenase

α-ketoglutaric dehydrogenase

both (a) and (b)

pyruvic dehydrogenase

TRUE ANSWER : ?
YOUR ANSWER : ?

Ascorbic acid acts as an

oxidizing and reducing agent both

reducing agent

None of these

oxidizing agent

TRUE ANSWER : ?
YOUR ANSWER : ?

The symptoms of retinol excess are

weakness

all of these

nausea

bone fragility

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamins are essential because the organism

can't synthesize these compounds in the adequate amounts

can synthesize these compounds partially

None of these

can't synthesize these compounds at all

TRUE ANSWER : ?
YOUR ANSWER : ?

Vitamin B12 is useful in the prevention and treatment of

scurvy

pernicious anemia

cataract

beri-beri

TRUE ANSWER : ?
YOUR ANSWER : ?

What metal ion is specifically bound by vitamin B12?

Copper

Cobalt

Zinc

Iron

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Activated carbon dioxide (CO2)

Sulfhydryl group

Methyl group

Ammonia

TRUE ANSWER : ?
YOUR ANSWER : ?

Selenium is an essential component of the enzyme glutathione peroxidase which

None of these

oxidizes toxic hydoperoxycompounds in tissues

reduces toxic hydoperoxycompounds in tissues

scavenges toxic hydoperoxycompounds in tissues

TRUE ANSWER : ?
YOUR ANSWER : ?

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

four isoprene units

four isoprene units

nine isoprene units

six isoprene units

TRUE ANSWER : ?
YOUR ANSWER : ?

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