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NEETBotanyCell - The Unit of Life

Match List-I with List-II. List-I List-II A. 70S Ribosome I. 60S and 40S subunits B. 80S Ribosome II. 50S and 30S subunits C. 'S' in ribosomes III. Sedimentation coefficient Choose the correct answer from the options given below:

Options

  1. AA-I, B-II, C-III
  2. BA-II, B-I, C-III
  3. CA-II, B-III, C-I
  4. DA-III, B-I, C-II

Correct answer

B. A-II, B-I, C-III

Step-by-step solution

70S ribosomes are found in prokaryotes (and organelles like chloroplasts and mitochondria) and consist of two subunits: 50S and 30S. 80S ribosomes are found in the cytoplasm of eukaryotes and consist of two subunits: 60S and 40S. The 'S' stands for Svedberg's unit, which represents the sedimentation coefficient. It is an indirect measure of density and size. Therefore, the correct matching is A-II, B-I, C-III. Answer: A-II, B-I, C-III

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