9th Class Science Sample Paper Sample Paper - 1 Term - 1

  • question_answer Differentiate between (i) SER and RER                                   (ii) Prokaryotic cell and Eukaryotic cell       

    Answer:

        Difference between SER and RER

    Rough Endoplasmic Reticulum (RER) Smooth Endoplasmic Reticulum (SER)
    1. It helps in protein synthesis. 2. Ribosomes are attached to its surface. 3. It is situated near the nucleus. It helps in lipid synthesis. Ribosomes are not attached to its surface It is situated near plasma membrane.
    Difference between prokaryotic cell and eukaryotic cell
    Prokaryotic cell Eukaryotic cell
    1. Nuclear region is poorly defined and known as nucleoid. 2. Membrane bound cell organelles are absent. 3. It is generally small in size. Nuclear region is well defined known as nucleus. Membrane bound cell organelles are present. It is generally large in size
     


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