Which one is the most abundant protein in the animal world

Options

(a) Trypsin
(b) Haemoglobin
(c) Collagen
(d) Insulin

Correct Answer:

Collagen

Explanation:

Collagen is the most abundant protein of animal world. Rubisco (ribulose biphosphte carboxylase – oxygenase) is not only the most abundant protein in plants but also the whole biosphere.