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Membrane Structure and Function

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

hydrophobic molecules
integral proteins
carbohydrates
cholesterol

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

amino acids
proteins
carbohydrates
none of these

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Membrane Structure and Function
Bacteriorhodopsin

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

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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
Protein
Carbohydrate

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Membrane Structure and Function
In membranes, lipids are

all of these
sterols
glycerophospholipids
sphingolipids

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Membrane Structure and Function
Biological membranes are like water beds because

they (normally) do not leak their contents
the membrane is thin compared to the enclosed volume
they are always moving
All of these

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