Macromolecules
6 free MDCAT Chemistry MCQs on Macromolecules (PM&DC syllabus), each with the answer, an explanation and the textbook line it comes from. Tap to check, no sign-up.
Tap an answer to check it · 6 questions
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Question 1
Which of these are simple proteins, giving only amino acids on hydrolysis?Show answer and explanation
Answer: A) Albumins
Globulins, collagen and histones are other simple proteins; the rest are conjugated. Source: Chemistry 12 KPK (taleem360.com), p. 332.
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Question 2
Proteins produced by the partial digestion of simple or conjugated proteins are:Show answer and explanation
Answer: A) Derived proteins
e.g. metaproteins and coagulated proteins. Source: Chemistry 12 KPK (taleem360.com), p. 332.
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Question 3
In competitive inhibition, the inhibitor:Show answer and explanation
Answer: D) Binds the active site
It competes with the substrate, blocking the active site. Source: Chemistry 12 KPK (taleem360.com), p. 341.
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Question 4
Irreversible inhibition occurs when the inhibitor:Show answer and explanation
Answer: A) Forms a strong covalent bond
The stable complex cannot be broken to restore the active enzyme. Source: Chemistry 12 KPK (taleem360.com), p. 341.
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Question 5
In uncompetitive inhibition, the inhibitor binds to the:Show answer and explanation
Answer: B) Enzyme-substrate complex
It does not react directly with the free enzyme. Source: Chemistry 12 KPK (taleem360.com), p. 342.
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Question 6
Most enzymes used in industry are obtained from:Show answer and explanation
Answer: C) Microorganisms
Mainly bacteria and fungi. Source: Chemistry 12 KPK (taleem360.com), p. 342.
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