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Membrane Structure and Function

Membrane Structure and Function
The model that is now known to be correct for the structure of biological membrane is

Lock and Key model
Page's model
Fluid mosaic model
Lac Operon model

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Membrane Structure and Function
In active transport, the membrane structure that functions is

cholesterol
hydrophobic molecules
integral proteins
carbohydrates

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Membrane Structure and Function
Which type of molecule spans the membrane, from its inner to outer surface according to the Fluid mosaic model of cell membranes?

Phospholipid
Carbohydrate
Cholesterol
Protein

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Membrane Structure and Function
Cholesterol is essential for normal membrane functions because it

cannot be made by higher organisms
keeps membranes fluid.
plugs up the cardiac arteries of older men
spans the thickness of the bilayer

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Membrane Structure and Function
Pinocytosis occurs in

mitochondria of all cells
none of these
all eukaryotic cells
all prokaryotic cells

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Membrane Structure and Function
The plasma membrane is a selectively permeable barrier due to presence of specific transport

proteins
carbohydrates
none of these
amino acids

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