Cells P
3. Write short notes on the following.
(a) Cytoplasm
(b) Nucleus of a cell
please
Answers
Answer:
a) Cytoplasm is a solution that fills up each cell. Its periphery is defined by the plasma membrane of the cell. Cytoplasm is composed of water, ions, salts and proteins. Organelles of the cell are suspended in the cytoplasm of the cell. It is a fluid that fills the cell and occurs between the plasma membrane and the nucleus. Cell organelles such as mitochondria, ribosomes, Golgi bodies, etc. are suspended in the cytoplasm.
(b) Nucleus controls all the activities of the cell. It is known as the control centre of a cell. It contains the information of the cell, i.e., DNA. Nucleus also controls the synthesis of ribosomes and proteins of the cell. The nuclear membrane has nuclear pores that allow the transfer of specific substances in and out of the nucleus
Answer:
Cytoplasm : 1) It is a transparent and jelly like material which fills the cell between nucleus and cell membrane.
2) Most of the chemical reactions which keep the cell alive take place in the cytoplasm.
3) It is a kind of chemical factory of the cell.
4) Various structures present in the cytoplasm of a cell are called organelles.
Nucleus : 1) It is a large, spherical organelle present in all the cells.
2) It controls all the activities of cell.
3) You can also say that it is the king of the cells.
4) It carries characters from one generation to another generation.
Hope it helps you.