The most abundant protein in the animal world is.
Correct answer: B. Collagen
- A. Rubisco
- B. Collagen
- C. Elastin
- D. Albumin
Explanation
The correct answer is collagen. Collagen is the most abundant protein in the animal world and plays a critical role in providing structural support to connective tissues such as skin, tendons, and ligaments. It accounts for about 25% to 35% of the whole-body protein content.Rubisco is incorrect because it is primarily found in plants and is involved in the process of photosynthesis. Elastin is also incorrect, as it is a protein that provides elasticity to tissues, but it is much less abundant than collagen. Finally, albumin is abundant in blood plasma and helps in maintaining osmotic pressure and transporting substances, but it is not the most prevalent protein in animals.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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