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Prokaryotic ribosomes are built from which two subunits?
A50S and 30S
B60S and 40S
C70S and 80S
D40S and 20S
Answer & Solution
Correct answer: A. 50S and 30S
1. A prokaryotic ribosome as a whole is described as 70S.
2. That figure is a sedimentation value, so the two parts do not simply add.
3. The subunits are the 50S and the 30S.
_Source: NCERT Class 11 Biology, Ch 8 'Cell: The Unit of Life'_
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