ESSENTIAL CELL BIOLOGY, FOURTH EDITION
CHAPTER 11: MEMBRANE STRUCTURE
© 2014 GARLAND SCIENCE PUBLISHING
The Lipid Bilayer
11-1 Which of the following phenomena will be observed if a cell’s membrane is pierced?
(a) t
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ESSENTIAL CELL BIOLOGY, FOURTH EDITION
CHAPTER 11: MEMBRANE STRUCTURE
© 2014 GARLAND SCIENCE PUBLISHING
The Lipid Bilayer
11-1 Which of the following phenomena will be observed if a cell’s membrane is pierced?
(a) the membrane reseals
(b) the membrane collapses
(c) a tear is formed
(d) the membrane expands
11-2 The plasma membrane serves many functions, many of which depend on the presence of
specialized membrane proteins. Which of the following roles of the plasma membrane
could still occur if the bilayer were lacking these proteins?
(a) intercellular communication
(b) selective permeability
(c) cellular movement
(d) import/export of molecules
11-3 While many prokaryotic cells have a single membrane bilayer, all eukaryotic cells have a
complex system of internal membrane-bound compartments. How might it be
advantageous for the cell to have these additional compartments?
11-4 Which type of lipids are the most abundant in the plasma membrane?
(a) phospholipids
(b) glycolipids
(c) sterols
(d) triacylglycerides
11-5 Indicate whether the following statements are true or false. If a statement is false, explain
why it is false.
A. Although cholesterol is a hydrophobic molecule, it has a hydrophilic head group
like all other membrane lipids.
B. Phosphatidylserine is the most abundant type of phospholipid found in cell
membranes.
C. Glycolipids lack the glycerol component found in phospholipids.
D. The highly ordered structure of the lipid bilayer makes its generation and
maintenance energetically unfavorable.
11-6 Which of the following membrane lipids does not contain a fatty acid tail?
(a) phosphatidylcholine
(b) a glycolipid
(c) phosphatidylserine
(d) cholesterol
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