Most abundant protein in blood:
Correct answer: B. Haemoglobin
- A. Collagen
- B. Haemoglobin
- C. Keratin
- D. Fibrinogen
Explanation
The most abundant protein in blood is hemoglobin, which is crucial for oxygen transport in red blood cells. Collagen is primarily found in connective tissues, not blood. Keratin is found in skin, hair, and nails, not in the circulatory system. Fibrinogen plays a role in blood clotting but is not as abundant as hemoglobin.
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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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