Question

Which one is the most abundant protein in the animal world?

• A. Trypsin
• B. Haemoglobin
• C. Collagen
• D. Insulin

Answer 1

Answer: (C)

• Collagen is the most abundant protein in the animal kingdom, and it accounts for around 30% of the total protein content of the human body, providing strength, integrity, and structure.
• RuBisCO is the most abundant protein on Earth because it catalyzes the primary chemical reaction by which inorganic carbon permanently enters the biosphere.

Thus, the correct answer is (C).