What is the subunits composition of prokaryotic ribosomes?

Correct option is A

The correct answer is (A)   ​50S and 30S

Prokaryotic ribosomes consist of two subunits: 50S and 30S, which together form a functional 70S ribosome.

• The 50S subunit has 34 proteins and two ribosomal RNA (rRNA) molecules: 23S rRNA and 5S rRNA.
• The 30S subunit contains 21 proteins and one rRNA molecule: 16S rRNA.
• These ribosomes are essential for protein synthesis in prokaryotic cells.

Information booster:

60S and 40S

Eukaryotic ribosomes are composed of 60S and 40S subunits.

• The 60S subunit includes 49 proteins and three rRNA molecules: 28S rRNA, 5.8S rRNA, and 5S rRNA.
• The 40S subunit contains 33 proteins and one rRNA molecule: 18S rRNA.

​60S and 30S

Mitochondrial ribosomes have 60S and 30S subunits.

• The 60S subunit consists of 49 proteins and two rRNA molecules: 16S rRNA and 12S rRNA.
• The 30S subunit includes 33 proteins and one rRNA molecule: 21S rRNA.