, UnderstandingPathophysiology8thEditionTestBank sl sl sl sl
Chapter 1. Cellular Biology sl sl sl
MULTIPLE CHOICE s l
1. A student is observing a cell under the microscope. It is observed to have supercoiled D NA
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with histones. Which of the following would also be observed by the student?
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a. A single circular chromosome
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b. A nucleus sl
c. Free-floating nuclear material sl sl
d. No organelles sl
ANS: B sl
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nuc leu
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s; thus, the nucleus should be observed.
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A single circular chromosome is characteristic of prokaryotic cells, which do not have histones
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.
Free-
floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
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Eukaryotic cells have membrane bounded cellular components called organelles. No organelles describ
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es a prokaryotic cell.
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2. A nurse is instructing the staff about cellular functions. Which cellular function is the nur se d
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escribing when an isolated cell absorbs oxygen and uses it to transform nutrients to en ergy?
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a. Metabolic absorption sl
b. Communication
c. Secretion
d. Respiration
,ANS: D sl
The ability of the cell to absorb oxygen refers to the cells function of respiration.
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The ability of the cell to function within a society of cells refers to its function of communic atio
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n.
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
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The ability of the cell to synthesize new substances and secrete these elsewhere refers to the ce lls f
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unction of secretion. sl sl
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of t
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he genetic information be contained?
sl sl sl sl
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C sl
The region of the cell that contains genetic material, including a large amount of ribonucleic aci
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d, most of the DNA, and DNA-binding proteins, is the nucleolus.
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The mitochondria is the site of cellular respiration.
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The ribosomes are involved in manufacturing of proteins within the cell.
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The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
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4. The fluid mosaic model for biologic membranes describes membrane behavior. According to
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this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
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a. Peripheral membrane proteins sl sl
b. Integral membrane proteins sl sl
, c. Glycoproteins
d. Cell adhesion molecules sl sl
ANS: B sl
Integral membrane proteins float freely in the fluid lipid bilayer.
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Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycopr otei
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ns act as cell surface markers.
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Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
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5. Which of the following can bind to plasma membrane receptors?
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a. Oxygen
b. Ribosomes
c. Amphipathic lipids sl
d. Ligands
ANS: D sl
Ligands are specific molecules that can bind with receptors on the cell membrane. Ox yge
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n moves by diffusion; it does not bind to receptors.
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Ribosomes make proteins and are not involved in bindin
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g. Amphipathic lipids are a portion of the cell membran e.
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6. A nurse is reviewing a report from a patient with metastatic cancer. What finding wou ld s
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upport the diagnosis of metastatic cancer? Alterations in extracellular matrix that incl ude:
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a. Decreased fibronectin sl
b. Increased collagen sl
c. Decreased elastin sl
Chapter 1. Cellular Biology sl sl sl
MULTIPLE CHOICE s l
1. A student is observing a cell under the microscope. It is observed to have supercoiled D NA
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl s l
with histones. Which of the following would also be observed by the student?
s l s l s l s l s l s l s l s l s l s l s l s l
a. A single circular chromosome
sl sl sl
b. A nucleus sl
c. Free-floating nuclear material sl sl
d. No organelles sl
ANS: B sl
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nuc leu
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl s l
s; thus, the nucleus should be observed.
sl sl sl sl sl sl
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones
sl sl sl sl sl sl sl sl sl sl sl sl sl
.
Free-
floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
sl sl sl sl sl sl sl sl sl sl sl sl sl
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles describ
sl sl sl sl sl sl sl sl sl sl sl
es a prokaryotic cell.
sl sl sl
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nur se d
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
escribing when an isolated cell absorbs oxygen and uses it to transform nutrients to en ergy?
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
a. Metabolic absorption sl
b. Communication
c. Secretion
d. Respiration
,ANS: D sl
The ability of the cell to absorb oxygen refers to the cells function of respiration.
sl sl sl sl sl sl sl sl sl sl sl sl sl sl
The ability of the cell to function within a society of cells refers to its function of communic atio
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
n.
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the ce lls f
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
unction of secretion. sl sl
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of t
sl sl sl sl sl sl sl sl sl sl sl sl sl sl 5s l sl
he genetic information be contained?
sl sl sl sl
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C sl
The region of the cell that contains genetic material, including a large amount of ribonucleic aci
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
d, most of the DNA, and DNA-binding proteins, is the nucleolus.
s l s l sl sl sl sl sl s l sl sl
The mitochondria is the site of cellular respiration.
sl sl sl sl sl sl sl
The ribosomes are involved in manufacturing of proteins within the cell.
sl sl sl sl sl sl sl sl sl sl
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
sl sl sl sl sl sl sl sl sl sl sl sl sl
4. The fluid mosaic model for biologic membranes describes membrane behavior. According to
sl sl sl sl sl sl sl sl sl sl sl sl
this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
a. Peripheral membrane proteins sl sl
b. Integral membrane proteins sl sl
, c. Glycoproteins
d. Cell adhesion molecules sl sl
ANS: B sl
Integral membrane proteins float freely in the fluid lipid bilayer.
sl sl sl sl sl sl sl sl sl
Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycopr otei
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
ns act as cell surface markers.
sl sl sl sl sl
Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
5. Which of the following can bind to plasma membrane receptors?
sl sl sl sl sl sl sl sl sl sl
a. Oxygen
b. Ribosomes
c. Amphipathic lipids sl
d. Ligands
ANS: D sl
Ligands are specific molecules that can bind with receptors on the cell membrane. Ox yge
sl sl sl sl sl sl sl sl sl sl sl sl sl sl
n moves by diffusion; it does not bind to receptors.
sl sl sl sl sl sl sl sl sl
Ribosomes make proteins and are not involved in bindin
sl sl sl sl sl sl sl sl
g. Amphipathic lipids are a portion of the cell membran e.
sl sl sl sl sl sl sl sl sl s l
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding wou ld s
sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl sl
upport the diagnosis of metastatic cancer? Alterations in extracellular matrix that incl ude:
sl sl sl sl sl sl sl sl sl sl sl sl
a. Decreased fibronectin sl
b. Increased collagen sl
c. Decreased elastin sl
