Write short notes on the following.(a) Cytoplasm (b) Nucleus

(a) Cytoplasm:

  • 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.
  • The cytoplasm helps in the exchange of materials between cell organelles.

(b) Nucleus of a cell:

  • The nucleus is the master of the cell. It commands all the functioning of the cell.
  • It is generally located in the centre of the cell and is spherical in shape.
  • A membrane called a nuclear membrane separates it from the cytoplasm.
  • It contains the genetic material DNA and RNA.
  • This porous membrane allows the transfer of material in the nucleus and cytoplasm.
  • The nucleus contains a dense body called Nucleolus which actually contains chromosomes, the genetic material.

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