alleryThe ribosomes of prokaryotic cells are designated as
A80S (60S + 40S)
B70S (50S + 30S)
C60S (40S + 20S)
D55S (35S + 20S)
Answer & Solution
Correct answer: B. 70S (50S + 30S)
Prokaryotic ribosomes are 70S, built from a 50S large subunit and a 30S small subunit.
Eukaryotic cytoplasmic ribosomes are larger 80S (60S + 40S).
Antibiotics like streptomycin target the bacterial 70S selectively.
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