Biology (Mader), 10th Edition

Chapter 5: Membrane Structure and Function

Pre-Test

1
The plasma membrane is composed primarily of _____.
A)phospholipids
B)carbohydrates
C)waxes
D)nucleic acids
2
The tails of the phospholipids are _____.
A)nonpolar
B)hydrophobic
C)directed inwards in the bilayer
D)All of these
3
The permeability of most membranes is reduced by the presence of _____ in the membrane.
A)nucleotides
B)proteins
C)cholesterol
D)glycolipids
4
Particular molecules or ions freely cross the plasma membrane with assistance from _____.
A)receptor proteins
B)cell recognition proteins
C)channel proteins
D)enzymatic proteins
5
A person's blood type is determined by the presence of particular _____ in the red blood cells' membranes.
A)phospholipids
B)glycoproteins
C)steroids
D)nucleic acids
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