Multiple choice

The subunits of a prokaryotic ribosome are

  1. 60S and 40S

  2. 50S and 30S

  3. 60S and 50S

  4. 20S and 15S
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The subunits of a prokaryotic ribosome are 50S and 30S. The 70S ribosomes of prokaryotes have in the larger 50S subunit, 23S and 5S types of rRNA and 34 different proteins. The 30S subunit contains a molecule of 16S rRNA and 21 different proteins.

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