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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

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

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Membrane Structure and Function
Membrane lipids are

none of these
ampiphillic
hydrophobic
hydrophilic

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Membrane Structure and Function
Bacteriorhodopsin

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

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Membrane Structure and Function
The mesosomes may be the sites of

RNA replications and specialized enzymatic reactions
DNA replication and specialized enzymatic reactions
RNA replications and specialized cyclic reactions
None of these

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

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

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

amino acids
none of these
proteins
carbohydrates

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