MEDICINE MCQ
INFECTIOUS DISEASES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Antibiotics block prokaryote cell processes, but not the processes in eukaryote cells.
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Antibiotics can only affect cells below a certain size.
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Human cells have a protective plasma membrane which prokaryote cells don’t have.
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Antibiotics are made of proteins which cannot pass through the plasma membrane.
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Detailed explanation-1: -Both human and bacterial cells are bounded by a plasma membrane. Bacterial membranes are surrounded by an additional and thicker cell wall. Systemic antibiotics are only effective against bacterial cells because they only target components found exclusively in cell walls.
Detailed explanation-2: -Antibiotics work by interfering with the bacterial cell wall to prevent growth and replication of the bacteria. Human cells do not have cell walls, but many types of bacteria do, and so antibiotics can target bacteria without harming human cells.
Detailed explanation-3: -Human cells do not contain peptidoglycan, so penicillin specifically targets bacterial cells. Other antibiotics target different molecules that inhibit bacterial growth while leaving human cells undamaged.
Detailed explanation-4: -Human cells don’t have cell wall. Human cells cannot be destroyed by any chemical. No worries!