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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

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

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

phospholipid synthesis
carbohydrate synthesis
amino acid synthesis
protein synthesis

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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
proteins
carbohydrates
amino acids

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Membrane Structure and Function
Biological membranes are like water beds because

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

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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?

Carbohydrate
Cholesterol
Protein
Phospholipid

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Membrane Structure and Function
Bacteriorhodopsin

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

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