Botany - Cell - The Unit of Life One Mark Questions

11th Standard

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Biology

Time : 00:30:00 Hrs
Total Marks : 10
    10 x 1 = 10
  1. The two subunits of ribosomes remain united at critical ion level of

    (a)

    Magnesium

    (b)

    Calcium

    (c)

    Sodium

    (d)

    Ferrous

  2. Sequences of which of the following is used to know the phylogeny

    (a)

    mRNA

    (b)

    rRNA

    (c)

    tRNA

    (d)

    Hn RNA

  3. Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipid and proteins from one lipid monolayer to the other

    (a)

    Neither lipid nor proteins can flip-flop

    (b)

    Both lipid and proteins can flip flop

    (c)

    While lipids can rarely flip-flop proteins cannot

    (d)

    While proteins can flip-flop lipids cannot

  4. The term animalcules was used by______.

    (a)

    Pasteur

    (b)

    Dutrochet

    (c)

    Leeuwenhoek

    (d)

    Robert Hooke

  5. A patch stop carrier is a part of_______

    (a)

    Bright field microscope

    (b)

    Dark field microscope

    (c)

    Electron microscope

    (d)

    Phase contrast microscope

  6. The metacentric chromosomes are shaped___________

    (a)

    L

    (b)

    V

    (c)

    J

    (d)

    I

  7. Polytene chromosomes are observed in_________ of Drosophilia

    (a)

    Endocrine gland

    (b)

    Gall bladder

    (c)

    Salivary gland

    (d)

    Exocrine gland

  8. Lampbrush chromosomes occur at ____________stage of meiotic Prophase I.

    (a)

    Leptotene

    (b)

    Diplotene

    (c)

    Zygotene

    (d)

    Pachytene

  9. Number of basal rings in gram positive bacteria _____________

    (a)

    2

    (b)

    4

    (c)

    6

    (d)

    8

  10. Cytoplasm is stained _______by eosin.

    (a)

    Pink

    (b)

    Blue

    (c)

    Greenish blue

    (d)

    Green

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