Cell


 
 
Concept Explanation
 

Cell

There is large variety of living organisms around us. Each organism starts its life as a single cell. Cells have many functions which keep an organism alive. The cells is the basic structural and functional unit of all living organisms. It is the smallest unit of life and thus it is known as building blocks or basic structural unit of life. As the blocks can be joined in many ways to make the building of different shapes and sizes. In the same way all , living organisms are made differently of different shapes, sizes and by different number of cells.

  • Cells take in nutrients, convert them into energy, carry out specialized functions and then reproduce as necessary.
  • Microscope: an instrument used to see cells. Simple microscope helps to see small things but not microscopic objects. As cells are microscopic structures, are only visible under a powerful microscope like a compound microscope.
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    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Human cheek cells are commonly stained with ________________.

    Right Option : A
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    Explanation
    Question : 2

    Temporary mount of a tissue is made in ______________________.

    Right Option : C
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    Explanation
    Question : 3

    Which of the following cell organelle is not enclosed by a unit membrane?

    Right Option : B
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    Explanation
     
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