CELL — STRUCTURE AND FUNCTIONS

Nucleus contains thread-like structures called chromosomes

A smaller spherical body in the nucleus. It is called the nucleolus.

Nucleus is separated from the cytoplasm by a membrane called the nuclear membrane.

Nucleus It is an important component of the living cell. It is generally spherical and located in the centre of the cell. It canbe stained and seen easily with the help of a microscope. Nucleus is separated from the cytoplasm by a membrane called the nuclear membrane. This is also porous and allows the movement …

What is Nucleus ? Read More »

Cytoplasm is the jelly-like substance present between the cell membrane and the nucleus. Various other components, ororganelles, of cells are present in the cytoplasm. These are mitochondria, golgi bodies, ribosomes, etc

, there is an outer thick layer in cells of plants called cell wall. This additional layer surrounding the cell membrane isrequired by plants for protection. Plant cells need protection against variations in temperature, high wind speed, atmospheric moisture etc.

The jelly-like substance between the nucleus and the cell membrane is called cytoplasm.

The central dense round body in the centre is called the nucleus.

The cell membrane or plasma membrane, is found in all cells and separates the interior of the cell from the outside environment.

The largest cell measuring 170 mm ×130 mm, is the egg of an ostrich.