The Protein That Makes Up About a Third of the Total

Question

The protein that makes up about a third of the total protein mass in animals is:
A) β-keratin.
B) collagen.
C) hemoglobin.
D) myoglobin.
E) α-keratin.

Accepted Answer

Collagen is the most abundant protein in animals, making up approximately one-third of the total protein mass. It is found in tissues such as skin, tendons, and bones and provides structural support and strength.β-Keratin and α-keratin are found in feathers and hair, while hemoglobin and myoglobin are involved in oxygen transport in the blood and muscles, respectively.