BHU PMT BHU PMT Solved Paper-2002

  • question_answer
    Which of the following is present on the walls of rough endoplasmic reticulum (RER) ?

    A)  DNA                                     

    B)  Ribosomes

    C)   Lipid body                        

    D)  Peroxisomes

    Correct Answer: B

    Solution :

     Endoplasmic reticulum is of two types on the basis of presence or absence of ribosomes.  Rough endoplasmic reticulum : In this ribosomes are attached to membrane of endoplasmic reticulum and they helps in protein synthesis.  Smooth endoplasmic reticulum : In this ribosomes are not attached to membrane of endoplasmic reticulum. They helps in lipid synthesis and detoxification. Peroxisomes are single membrane bound cell organelles; takes pan in photorespiration.


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