Question: 128 How many different proteins does the ribosome consist of?
(1) 40
(2) 20
(3) 80
(4) 60
Answer: Option (3)
Explanation:
Ribosomes are complex ribonucleoprotein particles composed of ribosomal RNA and proteins.
In eukaryotic cells, ribosomes consist of a large subunit and a small subunit.
Together, these two subunits contain approximately 80 different ribosomal proteins
along with ribosomal RNA molecules.
Therefore, the ribosome consists of about 80 different proteins.
Hence, Option (3) is the correct answer.