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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

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

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Membrane Structure and Function
Bacteriorhodopsin

is an integral membrane protein
absorbs light and pumps protons
All of these
contains primarily alpha-helical residues

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Membrane Structure and Function
Membrane lipids are

hydrophilic
none of these
hydrophobic
ampiphillic

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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?

Protein
Cholesterol
Phospholipid
Carbohydrate

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

none of these
amino acids
proteins
carbohydrates

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Membrane Structure and Function
Which of the following is not found in membranes?

Glycoproteins
Nucleic acids
Phospholipids
Glycolipids

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