When a polypeptide chain of amino acids become spirally coiled, the structure is called………structure of protein.
a) primary
b) secondary
c) tertiary
d) quaternary
When a protein structure is arranged into a three dimensional structure, it is called a………
a) primary structure
b) secondary structure
c) tertiary structure
d) quaternary structure
When
two or more chains of polypeptide chains are arranged into large sized
molecules, it is called a…….
a) primary structure
b) secondary structure
c) tertiary structure
d) quaternary structure
Explanation: e.g. haemoglobin
All enzymes are…….in nature.
a) lipid
b) carbohydrate
c) protein
d) vitamin
Explanation: they speed up biochemical reactions inside the body of living organisms
Which of the following protein/s play/s important role in the contraction of muscles and movements?
a) insulin
b) myosin
c) actin
d) both b and c
Coiled haemoglobin is called……..
a) haemoprotein
b) albumin
c) haemocyanin
d) myoglobin
