1
MCQ (Single Correct Answer)

AIPMT 2003

Vitamin B12 contains
A
Fe (II)
B
Co (III)
C
Zn (II)
D
Ca (II)

Explanation

Vit B12 also called Cyanocobaltamin, is anti-pernicious anaemia vitamin.
2
MCQ (Single Correct Answer)

AIPMT 2003

Glycolysis is
A
oxidation of glucose to glutamate
B
conversion of pyruvate to citrate
C
oxidation of glucose to pyruvate
D
conversion of glucose to haem.

Explanation

Glycolysis is the oxidation of glucose. It is an anaerobic process and involves the degradation of glucose into two molecules of pyruvate with the generation of two molecules of ATP.
3
MCQ (Single Correct Answer)

AIPMT 2002

Which is not true statement?
A
$$\alpha $$-carbon of $$\alpha $$-amino acid is asymmetric.
B
All proteins are found in $$L$$-form
C
Human body can synthesise all proteins they need.
D
At pH = 7 both amino and carboxylic groups exist in ionised form.

Explanation

Some proteins are also found in the D-form.
4
MCQ (Single Correct Answer)

AIPMT 2002

Enzymes are made up of
A
edible proteins
B
proteins with specific structure
C
nitrogen containing carbohydrates
D
carbohydrates.

Explanation

Enzymes are proteins that act as catalyst for bio-chemical processes of life. They speed up these reactions enormously and with a high degree of selectivity.

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