Biochemistry Questions and Answers – Molecules Derived from Amino Acids

This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Molecules Derived from Amino Acids”.

1. Tyrosine gives rise to a family of catecholamines that does not include
a) Dopamine
b) Norepinephrine
c) Epinephrine
d) Cortisol
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2. Which of the following gives rise to γ-amino butyrate?
a) Glutamate synthase
b) Glutamate decarboxylation
c) Glutamine synthase
d) Pyruvate decarboxylation
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3. Which of the following is the precursor for nitric oxide?
a) Arginine
b) Leucine
c) Isoleucine
d) Lysine
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4. Which of the following is an important cellular reducing agent?
a) Glutathione
b) Glycine
c) Arginine
d) Porphirin
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5. Which of the following is a PLP-requiring enzyme?
a) Ornithine decarboxylase
b) Glutathione peroxidase
c) Glutamine synthase
d) Glutamate synthase
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6. Which of the following is derived from tryptophan?
a) Dopamine
b) Norepinephrine
c) Epinephrine
d) Serotonin
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7. Cimetidine is a structural analog of
a) Proline
b) Tryptophan
c) Tyrosine
d) Histamine
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8. Lignin is derived from
a) Phenylalanine
b) Valine
c) Tryptophan
d) Arginine
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9. Which of the following is the precursor for auxin?
a) Phenylalanine
b) Valine
c) Tryptophan
d) Arginine
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10. Glutathione peroxidase contains a covalently bound
a) Selenium atom
b) Calcium atom
c) Magnesium atom
d) Copper atom
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Sanfoundry Global Education & Learning Series – Biochemistry.

To practice all areas of Biochemistry, here is complete set of 1000+ Multiple Choice Questions and Answers.