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Question

Ribosomes of bacteria mitochondria and chloroplasts are of

A
50 S type
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B
80 S type
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C
70 S type
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D
30 S type
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Solution

The correct option is C 70 S type
  • Ribosomes are known as protein factories because they are the main site of protein synthesis.
  • They are composed of ribonucleic acids and proteins.
  • Bacterial ribosome is made up of two subunits with sedimentation rates as- 50S (larger unit) and 30S (smaller unit) forming a 70S type of ribosome.
  • Its main function includes protein synthesis by translating the rRNA for forming specific proteins required for the functioning of the cell organelle (mitochondria and chloroplast as they have their own nucleic acid).
  • So, the correct answer is '70 S type'.

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