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NEETBotanyCell - The Unit of Life

Where are ribosomes located in prokaryotic cells?

Options

  1. AThe nucleus
  2. BThe cytoplasm
  3. CThe plasma membrane
  4. DThe endoplasmic reticulum

Correct answer

C. The plasma membrane

Step-by-step solution

: In prokaryotes, ribosomes are associated with the plasma membrane of the cell . They are about 15 nm by 20 nm in size and are made of two subunits - 50S and 30S units which when present together form 70S prokaryotic ribosomes. Ribosomes are the site of protein synthesis. Several ribosomes may attach to a single mRNA and form a chain called polyribosomes or polysome. The ribosomes of a polysome translate the mRNA into proteins.

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