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Standard IX
Biology
All about Cells
Write short n...
Question
Write short notes on the following (a) Cytoplasm and (b) Nucleus.
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Solution
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.
Nucleus
The nucleus is the master of the cell. It commands all the functioning of the cell.
It is generally located in the center 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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