TEST BANK| Understanding Pathophysiology 8th
Edition by Sue E. Huether, Kathryn L. McCance
GUARANTEED PASS| ALL CHAPTERS
INCLUDED 1-44
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, Chapter 1. Cellular Biology
MULTIPLE CHOICE
1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with
histones. Which of the following would also be observed by the student?
a. A single circular chromosome
b. A nucleus
c. Free-floating nuclear material
d. No organelles
RIGHT ANSWER: B
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus;
thus, the nucleus should be observed.
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones.
Free-floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles
describes a prokaryotic cell.
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nurse
describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
a. Metabolic absorption
b. Communication
c. Secretion
d. Respiration
RIGHT ANSWER: D
The ability of the cell to absorb oxygen refers to the cells function of respiration.
The ability of the cell to function within a society of cells refers to its function of communication.
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the cells
function of secretion.
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,3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of the
genetic information be contained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
RIGHT ANSWER: C
The region of the cell that contains genetic material, including a large amount of ribonucleic acid,
most of the DNA, and DNA-binding proteins, is the nucleolus.
The mitochondria is the site of cellular respiration.
The ribosomes are involved in manufacturing of proteins within the cell.
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
4. The fluid mosaic model for biologic membranes describes membrane behavior. According to this
model, which of the following float singly or as aggregates in the fluid lipid bilayer?
a. Peripheral membrane proteins
b. Integral membrane proteins
c. Glycoproteins
d. Cell adhesion molecules
RIGHT ANSWER: B
Integral membrane proteins float freely in the fluid lipid bilayer.
Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycoproteins
act as cell surface markers.
Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
5. Which of the following can bind to plasma membrane receptors?
a. Oxygen
b. Ribosomes
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c. Amphipathic lipids
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d. Ligands
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, RIGHT ANSWER: D
Ligands are specific molecules that can bind with receptors on the cell membrane. Oxygen moves by
diffusion; it does not bind to receptors.
Ribosomes make proteins and are not involved in binding. Amphipathic lipids are a portion of the
cell membrane.
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding would support
the diagnosis of metastatic cancer? Alterations in extracellular matrix that include:
a. Decreased fibronectin
b. Increased collagen
c. Decreased elastin
d. Increased glycoproteins
RIGHT ANSWER: A
Reduced amounts of fibronectin are found in some types of cancerous cells, allowing cancer cells to
travel, or metastasize.
Collagen provides strength, and its breakdown is associated with osteoarthritis, not cancer.
Elastin is found in the lungs and allows tissues to stretch; it is not associated with cancerous cells.
Decreased, not increased, glycoproteins are associated with cancerous cells.
7. Which form of cell communication is used to relate to other cells in direct physical contact?
a. Cell junction
b. Gap junction
c. Desmosomes
d. Tight junctions
RIGHT ANSWER: A
Cell junctions hold cells together and permit molecules to pass from cell to cell.
Gap junctions allow communication from the inside of one cell to the inside of another. Desmosomes
are not involved in communication, but allow cells to hold together.
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Tight junctions are barriers that prevent movement of some substances and leakages of others.
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Edition by Sue E. Huether, Kathryn L. McCance
GUARANTEED PASS| ALL CHAPTERS
INCLUDED 1-44
St
ud
yS
Page 1 of 786
H
, Chapter 1. Cellular Biology
MULTIPLE CHOICE
1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with
histones. Which of the following would also be observed by the student?
a. A single circular chromosome
b. A nucleus
c. Free-floating nuclear material
d. No organelles
RIGHT ANSWER: B
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus;
thus, the nucleus should be observed.
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones.
Free-floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles
describes a prokaryotic cell.
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nurse
describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
a. Metabolic absorption
b. Communication
c. Secretion
d. Respiration
RIGHT ANSWER: D
The ability of the cell to absorb oxygen refers to the cells function of respiration.
The ability of the cell to function within a society of cells refers to its function of communication.
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the cells
function of secretion.
St
ud
yS
Page 2 of 786
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,3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of the
genetic information be contained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
RIGHT ANSWER: C
The region of the cell that contains genetic material, including a large amount of ribonucleic acid,
most of the DNA, and DNA-binding proteins, is the nucleolus.
The mitochondria is the site of cellular respiration.
The ribosomes are involved in manufacturing of proteins within the cell.
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
4. The fluid mosaic model for biologic membranes describes membrane behavior. According to this
model, which of the following float singly or as aggregates in the fluid lipid bilayer?
a. Peripheral membrane proteins
b. Integral membrane proteins
c. Glycoproteins
d. Cell adhesion molecules
RIGHT ANSWER: B
Integral membrane proteins float freely in the fluid lipid bilayer.
Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycoproteins
act as cell surface markers.
Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
5. Which of the following can bind to plasma membrane receptors?
a. Oxygen
b. Ribosomes
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c. Amphipathic lipids
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d. Ligands
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, RIGHT ANSWER: D
Ligands are specific molecules that can bind with receptors on the cell membrane. Oxygen moves by
diffusion; it does not bind to receptors.
Ribosomes make proteins and are not involved in binding. Amphipathic lipids are a portion of the
cell membrane.
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding would support
the diagnosis of metastatic cancer? Alterations in extracellular matrix that include:
a. Decreased fibronectin
b. Increased collagen
c. Decreased elastin
d. Increased glycoproteins
RIGHT ANSWER: A
Reduced amounts of fibronectin are found in some types of cancerous cells, allowing cancer cells to
travel, or metastasize.
Collagen provides strength, and its breakdown is associated with osteoarthritis, not cancer.
Elastin is found in the lungs and allows tissues to stretch; it is not associated with cancerous cells.
Decreased, not increased, glycoproteins are associated with cancerous cells.
7. Which form of cell communication is used to relate to other cells in direct physical contact?
a. Cell junction
b. Gap junction
c. Desmosomes
d. Tight junctions
RIGHT ANSWER: A
Cell junctions hold cells together and permit molecules to pass from cell to cell.
Gap junctions allow communication from the inside of one cell to the inside of another. Desmosomes
are not involved in communication, but allow cells to hold together.
St
Tight junctions are barriers that prevent movement of some substances and leakages of others.
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yS
Page 4 of 786
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