HCS 212 TEST BANK 2
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1. The study of the structure and function of cells is c
A) biochemistry.
B) gross anatomy.
C) cytology.
D) electron microscopy.
E) phrenology.
2. Which of the following shows the fine structure of a b
plasmalemma (cell membrane) and the details of in-
tracellular structures?
A) light microscopy
B) transmission electron microscopy
C) scanning electron microscopy
D) ultrasound
E) magnetic resonance imaging
3. Cells float in a watery medium called b
A) cytoplasm.
B) extracellular fluid.
C) cytosol.
D) cellular fluid.
E) None of the answers are correct.
4. Which of the following describes phospholipids in the a
plasmalemma?
A) The lipid tails are hydrophobic.
B) The lipid tails are hydrophilic.
C) The phosphate heads are hydrophobic.
D) The tails are at the surface. E) The heads are on the
inside.
5. a
, HCS 212 TEST BANK 2
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The viscous, superficial coating on the outer surface of
the plasmalemma is called the
A) glycocalyx.
B) pseudopodia.
C) inclusions.
D) tubulin.
E) cytosol.
6. How do peripheral proteins contribute to the structure d
of the plasmalemma?
A) They form a structural element by being embedded
in the plasmalemma.
B) Some form channels to permit passage of water
molecules, ions, and small water-soluble compounds
into and out of the cell.
C) Some may function as catalysts or receptor sites to
signal through the plasmalemma.
D) They are attached to only one side of the mem-
brane.
E) None of the answers are correct.
7. Substances that enter the cell usually do so through d
the
A) cholesterol.
B) glycocalyx.
C) glycolipids.
D) integral proteins.
E) peripheral proteins.
8. The general functions of the plasmalemma include e
A) physical isolation of the cell contents from the extra-
cellular fluid.
, HCS 212 TEST BANK 2
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B) regulation of exchange of materials with the envi-
ronment.
C) sensitivity to changes in the extracellular fluid.
D) structural support of the cell.
E) All of the answers are correct.
9. Which statement describes how the plasmalemma is d
used in communication and sensitivity?
A) It serves as a storage site for large amounts of
proteins for future use by the cell.
B) It effectively isolates the cytoplasm from the sur-
rounding fluid environment.
C) It contains gated channels that can be opened or
closed to regulate the passage of materials.
D) It acts as a site for the attachment of glycoproteins
and glycolipids, which act as receptors for molecules
present in the extracellular fluid.
E) It provides for specialized connections between
neighboring cells.
10. Because the plasmalemma blocks some substances d
and allows others through, it is referred to as being
A) structurally rigid.
B) impermeable.
C) selectively permeable.
D) freely permeable.
E) both structurally rigid and selectively permeable.
11. Which of the following is a passive process for material e
movement across a plasmalemma?
A) bulk flow
B) endocytosis
Study online at https://quizlet.com/_72sngl
1. The study of the structure and function of cells is c
A) biochemistry.
B) gross anatomy.
C) cytology.
D) electron microscopy.
E) phrenology.
2. Which of the following shows the fine structure of a b
plasmalemma (cell membrane) and the details of in-
tracellular structures?
A) light microscopy
B) transmission electron microscopy
C) scanning electron microscopy
D) ultrasound
E) magnetic resonance imaging
3. Cells float in a watery medium called b
A) cytoplasm.
B) extracellular fluid.
C) cytosol.
D) cellular fluid.
E) None of the answers are correct.
4. Which of the following describes phospholipids in the a
plasmalemma?
A) The lipid tails are hydrophobic.
B) The lipid tails are hydrophilic.
C) The phosphate heads are hydrophobic.
D) The tails are at the surface. E) The heads are on the
inside.
5. a
, HCS 212 TEST BANK 2
Study online at https://quizlet.com/_72sngl
The viscous, superficial coating on the outer surface of
the plasmalemma is called the
A) glycocalyx.
B) pseudopodia.
C) inclusions.
D) tubulin.
E) cytosol.
6. How do peripheral proteins contribute to the structure d
of the plasmalemma?
A) They form a structural element by being embedded
in the plasmalemma.
B) Some form channels to permit passage of water
molecules, ions, and small water-soluble compounds
into and out of the cell.
C) Some may function as catalysts or receptor sites to
signal through the plasmalemma.
D) They are attached to only one side of the mem-
brane.
E) None of the answers are correct.
7. Substances that enter the cell usually do so through d
the
A) cholesterol.
B) glycocalyx.
C) glycolipids.
D) integral proteins.
E) peripheral proteins.
8. The general functions of the plasmalemma include e
A) physical isolation of the cell contents from the extra-
cellular fluid.
, HCS 212 TEST BANK 2
Study online at https://quizlet.com/_72sngl
B) regulation of exchange of materials with the envi-
ronment.
C) sensitivity to changes in the extracellular fluid.
D) structural support of the cell.
E) All of the answers are correct.
9. Which statement describes how the plasmalemma is d
used in communication and sensitivity?
A) It serves as a storage site for large amounts of
proteins for future use by the cell.
B) It effectively isolates the cytoplasm from the sur-
rounding fluid environment.
C) It contains gated channels that can be opened or
closed to regulate the passage of materials.
D) It acts as a site for the attachment of glycoproteins
and glycolipids, which act as receptors for molecules
present in the extracellular fluid.
E) It provides for specialized connections between
neighboring cells.
10. Because the plasmalemma blocks some substances d
and allows others through, it is referred to as being
A) structurally rigid.
B) impermeable.
C) selectively permeable.
D) freely permeable.
E) both structurally rigid and selectively permeable.
11. Which of the following is a passive process for material e
movement across a plasmalemma?
A) bulk flow
B) endocytosis
