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Membrane Structure and Function

Membrane Structure and Function
The movement of molecules across a membrane by passive transport does not require

none of these
vibrational energy
an input of metabolic energy
internal energy

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

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

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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
Cholesterol
Carbohydrate
Protein

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Membrane Structure and Function
The smooth endoplasmic reticulum (SER) is the site of

protein synthesis
phospholipid synthesis
amino acid synthesis
carbohydrate synthesis

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Membrane Structure and Function
Peptidoglycan is a complex consisting of

oligo-saccharide and protein
polysaccharide and protein
mono-saccharide and protein
aminoacid and carbohydrate

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

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

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