Which of these options are not functions of ribosomes?
(i) It helps in manufacture of protein molecules
(ii) It helps in manufacture of enzymes
(iii) It helps in manufacture of hormones
(iv) It helps in manufacture of starch molecules.
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (iv) and (i)

AcademicBiologyNCERTClass 9

Correct Answer: (None) (All options are incorrect) Only (iv) is incorrect


The ribosome is an important organelle of the cell responsible for protein synthesis. Ribosomes were first described by George E. Palade in 1955.

Ribosomes are present in free form in both prokaryotic and eukaryotic cells. They are also found attached to the outer surface of the rough endoplasmic reticulum to help the endoplasmic reticulum in the production and movement of proteins.

The size of the ribosome varies based on the size of the cell.

Function: Ribosome plays a very important role in protein synthesis.

Ribosomes help in the manufacture of protein molecules such as enzymes, and hormones.

Ribosomes do not help in the manufacturing of starch molecules as starch is a carbohydrate.

Updated on 10-Oct-2022 13:28:28