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Cell The Unit of Life Test - 1

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Cell The Unit of Life Test - 1
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  • Question 1
    1 / -0

    The rod shaped bacteria is called as

    Solution

    Explanation:

    The shapes of bacteria are bacillus (rod like), coccus (spherical), vibrio (comma shaped) and spirillum (spiral).

     

  • Question 2
    1 / -0

    In certain bacteria, the glycocalyx is forms into loose sheath layer is called as

    Solution

    Explanation:

    Glycocalyx differs in composition and thickness among different bacteria. It could be a loose sheath called the slime layer in some, while in others it may be thick and tough called the capsule. The cell wall determines the shape of the cell and provides a strong structural support.

     

  • Question 3
    1 / -0

    The smallest free living organism are

    Solution

    Explanation:

    PPLO (Pleuro Pneumonia Like Organisms). They are generally smaller and multiply more rapidly than the eukaryotic cells.

     

  • Question 4
    1 / -0

    The membrane complex formed in folding of plasma membrane in prokaryotic cells is called

    Solution

    Explanation:

    A special membranous structure is the mesosome which is formed by the extensions of plasma membrane into the cell.

     

  • Question 5
    1 / -0

    The photograph or diagram of metaphasic chromosome arranged in homologous pair according to their length and thickness, position of centromere is called

    Solution

    Explanation:

    Idiogram is a diagrammatic or systematized representation of the chromosome complement of an individual, species, or other group of organisms, indicating the number of chromosomes and their lengths, arm length ratio, centromere position, banding pattern.

     

  • Question 6
    1 / -0

    Each centriole is surrounded by dense amorphous protoplasmic masses called

    Solution

    Explanation:

    All animal cell have two small organelles called centrioles. Each centriole is surrounded by dense amorphous protoplasmic masses called Massules.

     

  • Question 7
    1 / -0

    The ability of a living somatic nucleated cell to form the complete organism is called

    Solution

    Explanation:

    Cellular Totipotency is the ability of a single cell to produce all cell types and to organise them into an entire organism when cultured in a suitable culture medium at appropriate temperature and aeration conditions. Spores and Zygote are examples of totipotent cells.

     

  • Question 8
    1 / -0

    New cells generate from

    Solution

    Explanation:

    All living organisms are composed of cells and products of cells.all cells arise from pre-existing cells.

     

  • Question 9
    1 / -0

    Who first saw and described a live cell?

    Solution

    Explanation:

    The first man to witness a live cell under a microscope was Anton van Leeuwenhoek, who in 1674 described the algae Spirogyra. Van Leeuwenhoek probably also saw bacteria.

     

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