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.
2
AIPMT 2001
MCQ (Single Correct Answer)
Which is the correct statement?
A
Starch is a polymer of $$\alpha $$-glucose.
B
Amylose is a component of cellulose.
C
Proteins are composed of only one type of amino acid.
D
In cyclic structure of fructose, there are four carbons and one oxygen atom.
Explanation
Starch is also know as amylum which
occurs in all green plants. A molecule of starch
(C6H10O5)n is built of a large number of
$$\alpha $$-glucose ring joined through oxygen-atom.
3
AIPMT 2001
MCQ (Single Correct Answer)
Which statement is incorrect about peptide bond?
A
C $$-$$ N bond length in proteins is longer than usual bond length of N $$-$$ C bond.
B
Spectroscopic analysis shows planar structure of
group.
C
C $$-$$ N bond length in proteins is smaller than usual bond length of C $$-$$ N bond.
D
None of the above.
Explanation
Due to resonance C — N bond in protein
acquires double bond character and is smaller
than usual C — N bond.
4
AIPMT 2001
MCQ (Single Correct Answer)
Which of the following is correct about H-bonding in nucleotide?
A
A $$-$$ T, G $$-$$ C
B
A $$-$$ G, T $$-$$ C
C
G $$-$$ T, A $$-$$ C
D
A $$-$$ A, T $$-$$ T
Explanation
Guanine G is linked to cytosine C by three
hydrogen bonds and adenine A is linked with
thymine T by two hydrogen bonds. It is abbreviate
as : G ≡ C and A = T
Questions Asked from Biomolecules
On those following papers in MCQ (Single Correct Answer)
Number in Brackets after Paper Indicates No. of Questions
