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Membrane Structure and Function

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

amino acid synthesis
phospholipid synthesis
carbohydrate synthesis
protein synthesis

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Membrane Structure and Function
Bacteriorhodopsin

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

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Membrane Structure and Function
Biological membranes are like water beds because

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

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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
Protein
Cholesterol
Carbohydrate

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Membrane Structure and Function
Pinocytosis occurs in

all prokaryotic cells
all eukaryotic cells
none of these
mitochondria of all cells

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

carbohydrates
amino acids
proteins
none of these

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