Question

Describe the function of the following :-
• Cell wall
• Cell membrane
• Nucleus
• Ribosomes
• Lysosomes


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Answer 1

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• Cell wall

Cell wall is situated outside the cell.

It is a think wall made up of cellulose .

The cell wall supports and protects the cell.

• Cell membrane

The thin outer covering of the cell is called cell membrane.

It separates the outside and inside of the cell.

It gives Shape to the cell .

• Nucleus

It is a dark, generally spherical structure.

It is found in the cytoplasm

It regulates the process which go inside the cell.

• Ribosomes

They are particles that occur in the cytoplasm and on certain membrane.

They manufacture protein.

• Lysosomes

They are small packets that contain destructive enzymes .

They protect the cell.

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Answer 2

Answer:

cell wall.

• The cell wall is the protective, semi-permeable outer layer of a plant cell. A major function of the cell wall is to give the cell strength and structure, and to filter molecules that pass in and out of the cell.
• The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
• The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.
• Function of Ribosomes. Ribosomes are a cell structure that makes protein. Protein is needed for many cell functions such as repairing damage or directing chemical processes. Ribosomes can be found floating within the cytoplasm or attached to the endoplasmic reticulum.
• The function of lysosomes is to remove waste as well as destroying a cell after it has died, called autolysis. A lysosome is an organelle containing digestive enzymes which it uses to function as the digestion and waste removal for cells, food particles, bacteria, etc.

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