Immunoglobulins (antibodies) of the blood plasma are :
Correct answer: A. Glycoproteins
- A. Glycoproteins
- B. Flavoproteins
- C. Lipoproteins
- D. All of these
Explanation
The correct answer is Glycoproteins, as immunoglobulins (antibodies) are glycoproteins. They have specific carbohydrate groups attached to their protein structure, which is essential for their function in the immune system. The other options are incorrect: Flavoproteins involve a flavin cofactor and are unrelated to immunoglobulins. Lipoproteins are involved in lipid transport and do not share the same structural characteristics as immunoglobulins. Therefore, the option 'All of these' is also incorrect, as it inaccurately groups different molecules with distinct functions and compositions.
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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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