Question

Write down two main functions of

(a) Endoplasmic reticulum

(b) Lysosome.

Answer 1

(a) Functions of endoplasmic reticulum:

(i) It forms supporting skeletal framework of the cell.

(ii) ER provides a pathway for the distribution of nuclear material from one cell to the other.

(b) Functions of lysosomes:

(i) Lysosomes serve as intracellular digestive system. They destroy any foreign material which enters the cell such as bacteria and virus.

(ii) Lysosomes also remove the worn out and poorly working cellular organelles by digesting them to make way for their new replacements.