The detailed structure of the cell membrane was studied only after the advent of the

(A)compound microscope

(B)cryo-electron microscopy

(C)X-ray crystallography

(D)electron microscope

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The lipid component of the membrane mainly consists of

(A)phosphoglycerides

(B)triglycerides

(C)monoglycerides

(D)Both B and C

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In membranes, the lipids are arranged within the membrane with the ______heads towards the outer sides and the _________ tails towards the inner part.

(A)polar, charged

(B)polar, hydrophobic

(C)polar, nonpolar

(D)Both B and C

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Which of the following biomolecules is not the part of membrane?

(A)Nucleic Acid

(B)Proteins

(C)Lipids

(D)Carbohydrates

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Which one is true for the cell membrane

(A)The ratio of lipids and proteins is fixed in membranes

(B)The amount of carbohydrates is greater than other biomolecules

(C)In human erythrocytes amount of protein is more than that of lipids

(D)All of the above

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Integral or Peripheral proteins classification is based on

(A)protein size

(B)ease of extraction

(C)ease of function

(D)ease of study

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The most improved model of the structure of the cell membrane is

(A)Fluid membrane model

(B)Fluid mosaic model

(C)Sandwich model

(D)unit membrane model

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Lateral movement of which of the following biomolecules takes place within the overall bilayer

(A)lipids

(B)carbohydrates

(C)proteins

(D)Both A and C

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The ability to move within the membrane is measured as its

(A)liquidity

(B)fluidity

(C)viscosity

(D)stability

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The fluid nature of the membrane is also important from the point of view of functions like

(A)cell growth

(B)secretion

(C)cell division

(D)All of the above

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