Haemoglobin is a large protein made up of ……..amino acids.
a) 251
b) 374
c) 574
d) 1009
In sickle cell haemoglobin, molecule glutamic acid is replaced by……..
a) Glycine
b) Alanine
c) Valine
d) Methionine
Explanation: such type of haemoglobin cannot perform its function and the person with sickle cell haemoglobin dies
In sickle cell anemia in β – globin chain ……..number of amino acid is replaced.
a) 1
b) 2
c) 4
d) 6
As regard the shape, proteins are classified into……..types.
a) two
b) three
c) four
d) five
Explanation: 1. Fibrous proteins and 2. Globular proteins
Which of the following proteins are made up of one or more polypeptide chains, which are linearly arranged in the form of thread like?
a) fibrous proteins
b) globular proteins
c) quaternary proteins
d) both a and b
Explanation: they are water insoluble proteins
Which of the following protein/s is/are fibrous proteins?
a) keratin
b) myosin
c) collagen
d) all of these
