PrepBharat

1. In eukaryotic cells, why there is an extensive compartmentalization of cytoplasm?
a) Due to the presence of fibres
b) Due to the presence of so many organelles
c) Due to the presence of membranous organelles
d) All of these

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2. The chemical studies on cell membrane that was deduced to its possible structure was mostly done on which cells?
a) WBC
b) Human erythrocytes
c) Platelets
d) Cheek cells

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3. In plasma membrane, the lipids have their polar heads facing
a) Outer side
b) Inner side
c) In the middle
d) Stable facing nowhere

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4. The lipid component of plasma membrane will be mainly constituted of
a) Glycolipids
b) Glycogen
c) Phosphoglycerides
d) All of these

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5. Identify the A, B, C and D in this figure.

a) A–Lipid bilayer, B–Protein, C–Sugar, D–Cholesterol
b) A–Protein, B–Lipid bilayer, C–Cholesterol, D–Sugar
c) A–Protein, B–Sugar, C–Lipid bilayer, D–Cholesterol
d) A–Cholesterol, B–Protein, C–Sugar, D–Lipid bilayer

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6. Which of the following are not the component of plasma membrane?
a) Sugar
b) Protein
c) Cholesterol
d) None of these

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7. What is the percentage of proteins and lipids in an RBC membrane respectively?
a) 52%, 40%
b) 50%, 40%
c) 50%, 42%
d) 52%, 42%

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8. Which of the following membrane proteins lie on the surface of the cell?
a) Integral proteins
b) Peripheral proteins
c) Both (a) and (b)
d) Glycoproteins

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9. Which of the following membrane proteins are partially or totally buried in cell membrane?
a) Integral proteins
b) Peripheral proteins
c) Both (a) and (b)
d) Glycoproteins

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10. The fluid mosaic model was given by Singer and Nicolson in the year _________
a) 1972
b) 1976
c) 1982
d) 1986

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