Which one of the following statements about proteins is correct?
A - VCE - SSCE Biology - Question 5 - 2019 - Paper 1
Question 5
Which one of the following statements about proteins is correct?
A. The activity of a protein may be affected by the temperature and pH of its environment.
B. The pr... show full transcript
Worked Solution & Example Answer:Which one of the following statements about proteins is correct?
A - VCE - SSCE Biology - Question 5 - 2019 - Paper 1
Step 1
A. The activity of a protein may be affected by the temperature and pH of its environment.
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Answer
This statement is correct. The activity of proteins can be significantly influenced by environmental factors such as temperature and pH. Extreme conditions may denature proteins or alter their function.
Step 2
B. The primary structure of a protein refers to its three-dimensional protein shape.
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Answer
This statement is incorrect. The primary structure of a protein refers to the linear sequence of amino acids in the polypeptide chain, not its three-dimensional shape, which relates to the secondary, tertiary, or quaternary structures.
Step 3
C. Proteins are not involved in the human immune response.
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Answer
This statement is incorrect. Many proteins, such as antibodies, play a crucial role in the immune response, helping to identify and neutralize foreign invaders.
Step 4
D. A protein with a quaternary structure will be an enzyme.
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Answer
This statement is not universally correct. While many enzymes have a quaternary structure, not all proteins with a quaternary structure are enzymes; some serve other functions altogether.
