Question

What are ribosomes????

Answer 1

Ribosomes are dense, spherical and grannular particles which occur freely in the matrix (cytosol) or remain attatched to the endoplasmic reticulum (RER).

Answer 2

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• Ribosomes were first observed by claude (1941) who named them 'microsomes'.

• Palade (1955) described them in animal cells under the electron microscope as dense particles or granules and Robert (1958) coined the the term 'ribosome'.

• These are one of the smallest organelles of the cell.

• In prokaryotes, it is live Freely in cytoplasm.

• Every ribosome consists of a big and small subunits.

• It shapes are spheroid with a diameter of 23 A°

• Ribosome is the assembly protein factory where the amino acids are linked to form proteins.

• It gives protection of mRNA.