Cell Structure


 
 
Concept Explanation
 

Cell Structure

Structure of a Cell

  •   A cell is the structural and functional unit of Life.
  • The living parts of the cell that have a definite shape, structure, and function are called organelles.
  • Cells have various components which have structural and functional importance. These components plasma membrane, nucleus and cytoplasm.
  •  Components of the cell are enclosed in a cell membrane which provides shape to the cells.
  • Cell wall is an additional covering over the cell membrane to give shape and rigidity to plant cells.
  • Due to presence of these features, all activities inside the cell and interaction of the cell with the environment are possible.
  •                                     

    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    _________________________ is an additional covering over the cell membrane to give shape and rigidity.

    Right Option : C
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    Explanation
    Question : 2

    The human cell, which lacks the nucleus at maturity, is ___________________

    Right Option : A
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    Explanation
    Question : 3

    Which of the following are correct ?

    (a) A cell is the structural and functional unit of Life.

     (b) The living parts of the cell that have a definite shape, structure, and function are called organelles.

    (c) Cells have various components which have structural and functional importance. These components are plasma membrane, nucleus and cytoplasm.

    Right Option : D
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    Explanation
     
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