OBJECTIVES & FILL IN THE BLANKS OF CELL: Plasma membran & Cytoplasm
Multiple Choice Questions (MCQs)
- Amount of protein in cell membrane is:
(a) 10% (b) 30% (c) 60% (d) 20%
- Amount of lipids in cell membrane is:
(a) 10% (b) 30% (c) 60% (d) 20%
- Which of the following is present in plasma membrane:
(a) Cholesterol (b) Lipids (c) Protein (d) all
- Phospholipids bilayer was described by:
(a) Overton (b) Grendel (c) Davson (d) Singer
- Fluid mosaic model was given by:
(a) Overton (b) Grendel (c) Davson (d) Singer
- Sandwich model was given by:
(a) Singer (b) Grendel (c) Davson (d) Overton
- 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
- The removal of cell secretions from the cells by out folding is:(a) Endocytosis (b) Exocytosis (c) Osmbsis (d) Diffusion
- The bulk movement of material into the cell by formation of vesicle is:
(a) Endocytosis (b) Exocytosis (c) Osmosis (d) Diffusion
- 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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- _______ and Garth Nicholson developed the fluid-mosaic
model of membrane structure in 1972. - The movement of molecules from the area of higher concentration to the area of lower concentration is called simple __________.
- The movement of molecules through the protein molecules fromhigher to lower concentration is called_________ diffusion.
- The diffusion of water across a selectively permeable membrane from an area of higher concentration to an area of lower
concentration is called _________
- The relative concentration of solutes in the water inside and outside the cell is called__________.
- The nonspecific uptake of all droplets of extracellular fluid is
called ___________
- The uptake of solid particles by invagination is called______.
- The soluble part of the cytoplasm is called __________
- Non-viscous colloidal solution is called _______
- The viscous colloidal solution is called _______
- Ans:
1. S. Singer 2. diffusion 3. facilitated4. osmosis
5. tonicity 6. pinocytosis 7. phagocytosis8. cytosol
9. sol 10. gel
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