MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
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Correct Answer: A. A protein produced by B-cell descendants that binds a specific antigen
Explanation:
Antibodies can neutralize, opsonize, or activate complement.
Their binding sites are antigen-specific.
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Correct Answer: B. A viral cycle ending with host-cell lysis and virus release
Explanation:
Viral components are synthesized and assembled inside the host.
The host cell then breaks open.
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Correct Answer: B. Produce antibody responses and memory B cells
Explanation:
Activated B cells can become plasma cells.
Plasma cells secrete antibodies.
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Correct Answer: C. A viral genome integrates into or persists with host DNA before activation
Explanation:
The viral genome may be copied with the host chromosome.
It can later enter the lytic cycle.
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Correct Answer: C. Produce antibody responses and memory B cells
Explanation:
Activated B cells can become plasma cells.
Plasma cells secrete antibodies.
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Correct Answer: D. Coordinate body functions through hormones
Explanation:
Endocrine glands release hormones into blood.
Hormones affect target cells with specific receptors.
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Correct Answer: D. Support, protection, movement, and mineral storage
Explanation:
Bones support the body and protect organs.
They also store minerals and house marrow.
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Correct Answer: D. A noncellular infectious particle requiring a host cell to reproduce
Explanation:
Viruses contain genetic material inside a protein coat.
Some also possess a lipid envelope.
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Correct Answer: A. Coordinate body functions through hormones
Explanation:
Endocrine glands release hormones into blood.
Hormones affect target cells with specific receptors.
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Correct Answer: A. A location where two or more bones meet
Explanation:
Joints may permit movement or provide stability.
Their structure varies with function.
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Correct Answer: B. Pituitary gland
Explanation:
The pituitary releases hormones regulating several other glands.
It is itself controlled by the hypothalamus.
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Correct Answer: B. A location where two or more bones meet
Explanation:
Joints may permit movement or provide stability.
Their structure varies with function.
