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Question

Subunits of 80S ribosomes are

A
40S
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B
60S
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C
None of the above
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D
40S and 60S
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Solution

The correct option is D 40S and 60S
80S ribosomes are found in eukaryotes. They are synthesised in the nucleolus. These ribosomes have two subunits:
  • 60s subunit: Larger subunit, made up of 28S, 5.8S and 5S rRNA + Ribosomal proteins
  • 40s subunit: Smaller subunit, made up of 18S rRNA + Ribosomal proteins

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