OBJECTIVES & FILL IN THE BLANKS OF CELL: Plasma membran & Cytoplasm

Multiple Choice Questions (MCQs)

  1. Amount of protein in cell membrane is:

(a) 10%            (b) 30%            (c) 60%           (d) 20%

  1. Amount of lipids in cell membrane is:

(a) 10%            (b) 30%            (c) 60%           (d) 20%

  1. Which of the following is present in plasma membrane:

(a) Cholesterol (b) Lipids             (c) Protein        (d) all

  1. Phospholipids bilayer was described by:

(a) Overton        (b) Grendel        (c) Davson        (d) Singer

  1. Fluid mosaic model was given by:

(a) Overton        (b) Grendel        (c) Davson        (d) Singer

  1. Sandwich model was given by:

(a) Singer          (b) Grendel        (c) Davson        (d) Overton

  1. The diffusion of water across a selectively permeable membrane from an area of higher concentration to an area of lower is:

(a) Endocytosis (b) Exocytosis (c) Osmosis          (d) Diffusion

  1. The removal of cell secretions from the cells by out folding is:(a) Endocytosis (b) Exocytosis (c) Osmbsis           (d) Diffusion
    1. The bulk movement of material into the cell by formation of vesicle is:

    (a) Endocytosis (b) Exocytosis (c) Osmosis           (d) Diffusion

    1. The soluble part of the cytoplasm is called:

    (a) Cytosole          (c) Cytoplasm (d) Cytoskeleton (d) Colloidal
    Answers:

    1. (c)   2. (d) 3. (d) 4. (b) 5. (d) 6. (c)          7. (c)  8. (b)

    9. (a)      10. (a)

    Fill in blanks


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    1. _______ and Garth Nicholson developed the fluid-mosaic
      model of membrane structure in 1972.
    2. The movement of molecules from the area of higher concentration to the area of lower concentration is called simple __________.
    3. The movement of molecules through the protein molecules fromhigher to lower concentration is called_________ diffusion.
    4. The diffusion of water across a selectively permeable membrane from an area of higher concentration to an area of lower

      concentration is called _________

    5. The relative concentration of solutes in the water inside and outside the cell is called__________.
    6. The nonspecific uptake of all droplets of extracellular fluid is

      called ___________

    7. The uptake of solid particles by invagination is called______.
    8. The soluble part of the cytoplasm is called __________
    9. Non-viscous colloidal solution is called _______
    10. The viscous colloidal solution is called _______
    11. Ans:

      1. S. Singer      2. diffusion      3. facilitated4. osmosis

      5. tonicity        6. pinocytosis 7. phagocytosis8. cytosol

      9. sol               10. gel

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