Question

what are ribosomes ​

Answer 1

Ribosomes are cell organelles that consist of RNA and proteins. They are responsible for assembling the proteins of the cell. Depending on the protein production level of a particular cell, ribosomes may number in the millions.

Answer 2

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What is ribosomes ?

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They were first observed by Romanian cell biologist George Palade. The term ${'ribosome'}$ was proposed by Richard B. Roberts in 1958. It is a small, dense, functional structure found in all cells. It is about 20nm in diameter. It is composed of 65% rRNA and 35% ribosomal proteins. The ribosomes consists of two subunits that fit and work during protein synthesis.

❋ Ribosomes are found in both prokaryotes and eukaryotes. There are two pieces or subunets in every ribosome. It has been identified that the 60-S (large) and 40-S small subunets are present.

❋ While in eukaryotes 50-S (larger) and 30-S (small) subunits are present in prokaryotes (figure).

Generally, the free ribosomes are suspended in cytoplasm. The proteins made by free ribosomes are used within the cell.

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✯The main function of ribosomes is that it plays an important part in protein synthesis.

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