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  • 70S ribosome is present in Option: 1 Prokaryotes Option: 2 Mitochondria 

70S ribosome is present in 

Option: 1

Prokaryotes 


Option: 2

Mitochondria 


Option: 3

Plastids 


Option: 4

All of these 


Answers (1)

best_answer

 

 

Ribosomes

  • The ribosomes are the organelles that are not bound by any membrane. 
  • These are made up of ribosomal RNA (rRNA) and proteins. Hence, these are ribonucleoprotein particles. 
  • These may be found attached to the rough endoplasmic reticulum or may be present freely in the cytoplasm. 
  • Each ribosome is made up of two subunits - a large subunit and a small subunit. 
  • The ribosomes in eukaryotic cells are of 80S type while in prokaryotic cells they are of  70S types. 
  • The ‘S’ denotes the Svedberg unit for sedimentation rate that measures shape, size and density of the ribosomes.
  • The main function of the ribosome is to perform the translation of the mRNA to form the polypeptide chain.
     

70S ribosomes are found in prokaryotes, mitochondria and plastids.

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Shailly goel

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