3. Write short notes on the following.
(a) Cytoplasm
(b) Nucleus of a cell
Answers
Answer:
The spherical round body present in the centre of the cell is called nucleus. It is an important component of the living cell. Nucleus is separated from the cytoplasm by a membrane called the nuclear membrane. The nuclear membrane is porous and allows the movement of materials between the cytoplasm and nucleus.
Answer:
(a) Cytoplasm
Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus.
(b) Nucleus of a cell
The nucleus is the information centre of the cell and is surrounded by a nuclear membrane in all eukaryotic... A cell normally contains only one nucleus. Under some conditions, however, the nucleus divides but the cytoplasm does not.