KVPY Sample Paper KVPY Stream-SX Model Paper-21

  • question_answer
    The difference between rough endoplasmic reticulum and smooth endoplasmic reticulum is that rough endoplasmic reticulum

    A) does not contain ribosomes

    B) contains ribosomes

    C) does not transport proteins

    D) transports proteins

    Correct Answer: B

    Solution :

    The difference between rough and smooth Endoplasmic Reticulum (ER) is that rough endoplasmic reticulum contains ribosomes. Endoplasmic reticulum is a network of interconnected cisternae, tubules and vesicles present in cytoplasm.
    Depending on the presence or absence of ribosomes it is of two types
    (i) Rough ER It has ribosomes attached on its surface by ribophorin.
    (ii) Smooth ER The ribosomes are not attached to its surface.

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