Cell - Basic Unit of life | Science | Class 9 | Part8

Cell – Basic Unit of life

 

Ribosomes

1.Dense & small

2.Extremely small

3.Spherical shape

4.Interspersed in cytoplasm

 

Types of Ribosomes

               70s ribosomes                                          80s ribosomes

Present in prokaryotic cells                                        Present in eukaryotic cells

Functions :

Synthesis of proteins

 

Lysosomes (Suicidal Bags)

1.Spherical, Sac like structures

2.Small

3.Found in eukaryotic cells

4.Contain digestive enzymes

5.Formed by Golgi bodies

Functions  :

1.Helps in the cleaning of cells

2.Protection against harmful bacteria & viruses

3.Helps in the digestion of a foreign substance

 

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