Which of following protein is the most abundant protein in higher vertebrates?
a) keratin
b) myosin
c) collagen
d) none of these
Explanation: collagen is found in skin, ligaments, tendons, bones and in the cornea of the eyes
Which of the following proteins are spherical in shape due to folding of polypeptide chains?
a) fibrous proteins
b) globular proteins
c) quaternary proteins
d) both a and b
Explanation: they are usually water soluble proteins
Which of the following is/are the example/s of globular proteins?
a) haemoglobin and albumin
b) enzymes
c) antibodies and membrane proteins
d) all of these
On the basis of structures and level of organization, there are…….types of proteins.
a) five
b) three
c) four
d) ten
Explanation: primary, secondary, tertiary and quaternary structures
Sanger in 1951 determined the sequence of amino acids in…….molecules.
a) insulin
b) haemoglubin
c) keratin
d) collagen
A polypeptide chain having linear sequence of amino acids is called…..structure
a) primary
b) secondary
c) tertiary
d) quaternary
