Question

What is the chemical composition of ribosomes.?.??.?..?

Answer 1

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♦ Chemical composition of Ribosomes.

> 70s -- 60% r-RNA + 40 % proteins.

> 80s -- 40% r-Rna + 60 % proteins.

> 60s -- r-RNA 28s, 5.8s, 5s.

> 40s -- r-RNA 18s.

> 50s -- r-RNA 23s, 5s.

> 30s -- r-RNA 16s.

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Answer 2

$\Large{\textbf{\underline{\underline{Structure\;of\; Ribosomes :-}}}}$

The ribosomes are ribonucleoproteinic obvate , spheroid structues. They are having two sub units one is larger sub unit having dom shaped structure and the other smaller sub units forming a cap like structure. They are composed of RNA and proteins.

$\Large{\textbf{\underline{\underline{Types\;are :-}}}}$

1. 70 S Ribosomes = They are present in prokaryotic cell

2. 80 S Ribosomes = They are present in eukaryotic cell.

It contain 34 percent protein and 66% RNA, as in eukaryotes they contain 40 percent protein and 60 percent RNA