MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
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Correct Answer: C. The reactant acted upon by an enzyme
Explanation:
Substrates bind to active sites.
They are converted into products during the reaction.
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Correct Answer: C. The cell's main immediate energy-transfer molecule
Explanation:
ATP stores usable energy in phosphate bonds.
Hydrolysis of ATP powers many cellular processes.
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Correct Answer: D. The reactant acted upon by an enzyme
Explanation:
Substrates bind to active sites.
They are converted into products during the reaction.
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Correct Answer: D. The cell's main immediate energy-transfer molecule
Explanation:
ATP stores usable energy in phosphate bonds.
Hydrolysis of ATP powers many cellular processes.
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Correct Answer: A. The reactant acted upon by an enzyme
Explanation:
Substrates bind to active sites.
They are converted into products during the reaction.
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Correct Answer: A. Cytoplasm
Explanation:
Glycolysis breaks glucose into pyruvate.
It occurs in the cytosol and does not directly require oxygen.
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Correct Answer: B. Amino acids
Explanation:
Proteins are polymers of amino acids linked by peptide bonds.
Their sequence determines folding and function.
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Correct Answer: C. The covalent bond joining amino acids
Explanation:
Peptide bonds form through dehydration synthesis.
They link the carboxyl group of one amino acid to the amino group of another.
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Correct Answer: D. The covalent bond joining amino acids
Explanation:
Peptide bonds form through dehydration synthesis.
They link the carboxyl group of one amino acid to the amino group of another.
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Correct Answer: A. The covalent bond joining amino acids
Explanation:
Peptide bonds form through dehydration synthesis.
They link the carboxyl group of one amino acid to the amino group of another.
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Correct Answer: B. Loss of normal protein shape and function
Explanation:
Heat, pH, or chemicals can disrupt protein folding.
The amino-acid sequence may remain intact.
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Correct Answer: C. Loss of normal protein shape and function
Explanation:
Heat, pH, or chemicals can disrupt protein folding.
The amino-acid sequence may remain intact.
