Ribosomes

Name : - Ribosomes , protein factories

Properties

• These are the dot like or granular structure without limiting any membrane.
• It's diameter 15nm.
• It is made up of 35% protein and 65% ribonucleic acid (RNA) called ribosomal RNA.
• Human ribosomes are 80S ('S' for Svedberg's Unit)
• Each ribosome has two subunits i.e. larger (60S) and smaller (40S)

Types of Ribosomes :

1. Ribosomes attach to the endoplsamic reticulum called rough endoplasmic reticulum (RER).
2. Free ribosome - that are distributed in the cytoplasm.

Function of Ribosomes :- 

• Rough endoplasmic reticulum :- Synthesis of protein such as enzymatic protein, hormonal protein, lysosomal protein and the protein of the cell membrane.
• Free ribosomes :- are responsible for synthesis of protein in haemoglobin, peroxisome and mitochondria.

Ribosomes

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Similar Post :- 

• Mitochondria
• Lysosomes
• Rough Endoplasmic Reticulum
• Cytoskeleton
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