Advanced Cell Biology Final Exam
Questions and All Correct Answers
2025-2026 Updated.
a. The membrane reseals. - Answer Which of the following is most likely to occur after the
lipid bilayer is pierced?
a. The membrane reseals.
b. The membrane collapses.
c. A tear is formed.
d. The membrane expands.
b. selective permeability - Answer Which of the following functions of the plasma membrane
is possible without membrane proteins?
a. intercellular communication
b. selective permeability
c. cellular movement
d. import/export of molecules
a. phospholipids - Answer Which type of lipids are the most abundant in the plasma
membrane?
a. phospholipids
b. glycolipids
c. sterols
d. triacylglycerides
d. cholesterol - Answer Which of the following membrane lipids does not contain a fatty acid
tail?
a. phosphatidylcholine
b. a glycolipid
c. phosphatidylserine
, a. X only
b. Z only
c. X and Y
d. Y and Z
a. moving between lipid layers - Answer Membrane lipids are capable of many different
types of movement. Which of these does not occur spontaneously in biological membranes?
a. moving between lipid layers
b. lateral movement
c. rotation around the long axis of a fatty acid
d. flexing of hydrocarbon chains
d. membrane thickness - Answer Cholesterol serves several essential functions in
mammalian cells. Which of the following is NOT influenced by cholesterol?
a. membrane permeability
b. membrane fluidity
c. membrane rigidity
d. membrane thickness
proteins, amphipathic, lipid bilayer, fatty acid tails, hydrophilic head groups, phospholipids,
sugars - Answer Look at short answer question 11-3 to help answer this fill in the blank.
The specialized functions of different membranes are largely determined by the __________
they contain. Membrane lipids are __________ molecules, composed of a hydrophilic portion
and a hydrophobic portion. All cell membranes have the same __________ structure, with the
__________ of the phospholipids facing into the interior of the membrane and the __________
on the outside. The most common lipids in most cell membranes are the __________. The head
group of a glycolipid is composed of __________.
b. K+ - Answer Cells use membranes to help maintain set ranges of ion concentrations inside
and outside the cell. Which of the following ions is the most abundant inside a typical
Questions and All Correct Answers
2025-2026 Updated.
a. The membrane reseals. - Answer Which of the following is most likely to occur after the
lipid bilayer is pierced?
a. The membrane reseals.
b. The membrane collapses.
c. A tear is formed.
d. The membrane expands.
b. selective permeability - Answer Which of the following functions of the plasma membrane
is possible without membrane proteins?
a. intercellular communication
b. selective permeability
c. cellular movement
d. import/export of molecules
a. phospholipids - Answer Which type of lipids are the most abundant in the plasma
membrane?
a. phospholipids
b. glycolipids
c. sterols
d. triacylglycerides
d. cholesterol - Answer Which of the following membrane lipids does not contain a fatty acid
tail?
a. phosphatidylcholine
b. a glycolipid
c. phosphatidylserine
, a. X only
b. Z only
c. X and Y
d. Y and Z
a. moving between lipid layers - Answer Membrane lipids are capable of many different
types of movement. Which of these does not occur spontaneously in biological membranes?
a. moving between lipid layers
b. lateral movement
c. rotation around the long axis of a fatty acid
d. flexing of hydrocarbon chains
d. membrane thickness - Answer Cholesterol serves several essential functions in
mammalian cells. Which of the following is NOT influenced by cholesterol?
a. membrane permeability
b. membrane fluidity
c. membrane rigidity
d. membrane thickness
proteins, amphipathic, lipid bilayer, fatty acid tails, hydrophilic head groups, phospholipids,
sugars - Answer Look at short answer question 11-3 to help answer this fill in the blank.
The specialized functions of different membranes are largely determined by the __________
they contain. Membrane lipids are __________ molecules, composed of a hydrophilic portion
and a hydrophobic portion. All cell membranes have the same __________ structure, with the
__________ of the phospholipids facing into the interior of the membrane and the __________
on the outside. The most common lipids in most cell membranes are the __________. The head
group of a glycolipid is composed of __________.
b. K+ - Answer Cells use membranes to help maintain set ranges of ion concentrations inside
and outside the cell. Which of the following ions is the most abundant inside a typical
