State the difference between eukaryotes and prokaryotes.
Eukaryotes have a well designed nucleus and organelles covered with membranes while prokaryotes do not have a well designed nuclear membrane .
Write short notes on the following :
Nucleus of a cell
Nucleus is spherical dense body found in the centre of the cell. Nuclear membrane separates the nucleus from cytoplasm. It acts as control centre of the activities of the cell. Nucleus contains thread-like structures called chromosomes. Nucleus membrane is porous and allows the movement of material between the nucleus and cytoplasm. It also contains the threadlike structure called chromosomes which are genetic material.
Make sketches of animal and plant cell. State three differences between them.
Write short notes on the following :
Cytoplasm
It is a jellylike substance which is present between nucleus and cell membrane. There are various other organelles present in the cytoplasm. It is made up of carbohydrates, proteins and water.