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Cell The Unit of Life Test - 4

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Cell The Unit of Life Test - 4
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Weekly Quiz Competition
  • Question 1
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    New cells generate from

    Solution

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

  • Question 2
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    Who first saw and described a live cell?

    Solution

    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.

  • Question 3
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    Cytoskeleton is made of

    Solution

    Cytoskeleton is a series of intercellular proteins that help a cell with shape, support andmovement. So, cytoskeleton is made up of proteinaceous filaments.

  • Question 4
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    Select the incorrect matching

    Solution

    Mitochondria contain cristae, finger like projection of inner layer, thylakoid is present in chloroplast and lysosome is a digestive enzyme but RNA is absent in Chromosome.

  • Question 5
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    Which is common in plant and animal cells

    Solution

    Mitochondria are present in both plant as well as animal cells. Plastids and central vacuoles are present in plant cells and centrioles are present in only animal cells.

  • Question 6
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    Animal cell do not possess

    Solution

    Animal cell do not possess plasmodesmata but it contain ribosomes, centriole andplamalemma. Plasmodesmata is the connection between two plant cells.

  • Question 7
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    The ability of a living somatic nucleated cell to form the complete organism is called

    Solution

    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
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    The most recent and accepted model of plasma membrane is

    Solution

    Fluid-Mosaic model is the most recent and accepted model of plasma membrane. This model was proposed by Singer and Nicolson in 1972. The quasi-fluid nature of lipid enables lateral movement of proteins with in the overall bilayer.

  • Question 9
    1 / -0

    Each centriole is surrounded by dense amorphous protoplasmic masses called

    Solution

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

  • Question 10
    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

    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.

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