Free Importance of Proteins MCQs with Answers
22 Importance of Proteins MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Proteins are polymers of amino acids joined by peptide bonds, and their biological roles depend on primary, secondary, tertiary and quaternary structure. Coverage includes enzymes, hormones, antibodies, transport proteins, muscle fibres and structural tissues, together with denaturation and the effects of heat, pH and chemicals.
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22 questions · page 2 of 2
- A. -NH2
- B. -NH+3
- C. -COOH
- D. -COO-
Explanation: The correct answer is -COOH, which is the carboxylic acid functional group present in amino acids.
Correct answer: -COOH- A. They have two functional groups
- B. They show both acidic and basic characteristics
- C. They are the basic units of proteins
- D. They do not exist in solid state
Explanation: Amino acids exist as zwitterions, which are molecules that have both positive and negative charges but are overall neutral.
Correct answer: They do not exist in solid state