, Understanding Pathophysiology8th Edition Test Bank pm pm pm pm
Chapter 1. Cellular Biology
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MULTIPLE CHOICE pm
1. A student is observing a cell under the microscope. It is observed to have supercoiled DN
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A 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 pm
c. Free-floating nuclear material pm pm
d. No organelles pm
ANS: B pm
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucl
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eus; 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
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describes a prokaryotic cell.
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2. A nurse is instructing the staff about cellular functions. Which cellular function is the nur
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se describing when an isolated cell absorbs oxygen and uses it to transform nutrients to ene
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rgy?
a. Metabolic absorption pm
b. Communication
c. Secretion
d. Respiration
,ANS: D pm
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 communica
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tion.
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
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lls function of secretion.
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3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most
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of the genetic information be contained?
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a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C pm
The region of the cell that contains genetic material, including a large amount of ribonucleic
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acid, 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 t
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o this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
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a. Peripheral membrane proteins pm pm
b. Integral membrane proteins pm pm
, c. Glycoproteins
d. Cell adhesion molecules
pm pm
ANS: B pm
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
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oteins 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.
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
5. Which of the following can bind to plasma membrane receptors?
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a. Oxygen
b. Ribosomes
c. Amphipathic lipids pm
d. Ligands
ANS: D pm
Ligands are specific molecules that can bind with receptors on the cell membrane. Ox
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ygen moves by diffusion; it does not bind to receptors.
pm pm pm pm pm pm pm pm pm
Ribosomes make proteins and are not involved in binding
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. Amphipathic lipids are a portion of the cell membrane.
pm pm pm pm pm pm pm pm pm
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding wou
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ld support the diagnosis of metastatic cancer? Alterations in extracellular matrix that incl
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ude:
a. Decreased fibronectin pm
b. Increased collagen pm
c. Decreased elastin pm
Chapter 1. Cellular Biology
pm pm pm
MULTIPLE CHOICE pm
1. A student is observing a cell under the microscope. It is observed to have supercoiled DN
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
A with histones. Which of the following would also be observed by the student?
pm pm pm pm pm pm pm pm pm pm pm pm pm
a. A single circular chromosome
pm pm pm
b. A nucleus pm
c. Free-floating nuclear material pm pm
d. No organelles pm
ANS: B pm
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucl
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
eus; thus, the nucleus should be observed.
pm pm pm pm pm pm
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones.
pm pm pm pm pm pm pm pm pm pm pm pm pm
Free-
floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
pm pm pm pm pm pm pm pm pm pm pm pm pm
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles
pm pm pm pm pm pm pm pm pm pm pm
describes a prokaryotic cell.
pm pm pm
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nur
pm pm pm pm pm pm pm pm pm pm pm pm pm pm
se describing when an isolated cell absorbs oxygen and uses it to transform nutrients to ene
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
rgy?
a. Metabolic absorption pm
b. Communication
c. Secretion
d. Respiration
,ANS: D pm
The ability of the cell to absorb oxygen refers to the cells function of respiration.
pm pm pm pm pm pm pm pm pm pm pm pm pm pm
The ability of the cell to function within a society of cells refers to its function of communica
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
tion.
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the ce
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
lls function of secretion.
pm pm pm
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
of the genetic information be contained?
pm pm pm pm pm
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C pm
The region of the cell that contains genetic material, including a large amount of ribonucleic
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
acid, most of the DNA, and DNA-binding proteins, is the nucleolus.
pm pm pm pm pm pm pm pm pm pm
The mitochondria is the site of cellular respiration.
pm pm pm pm pm pm pm
The ribosomes are involved in manufacturing of proteins within the cell.
pm pm pm pm pm pm pm pm pm pm
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
pm pm pm pm pm pm pm pm pm pm pm pm pm
4. The fluid mosaic model for biologic membranes describes membrane behavior. According t
pm pm pm pm pm pm pm pm pm pm pm
o this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
a. Peripheral membrane proteins pm pm
b. Integral membrane proteins pm pm
, c. Glycoproteins
d. Cell adhesion molecules
pm pm
ANS: B pm
Integral membrane proteins float freely in the fluid lipid bilayer.
pm pm pm pm pm pm pm pm pm
Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycopr
pm pm pm pm pm pm pm pm pm pm pm pm pm pm
oteins act as cell surface markers.
pm pm pm pm pm
Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
pm pm pm pm pm pm pm pm pm pm pm pm pm pm pm
5. Which of the following can bind to plasma membrane receptors?
pm pm pm pm pm pm pm pm pm
a. Oxygen
b. Ribosomes
c. Amphipathic lipids pm
d. Ligands
ANS: D pm
Ligands are specific molecules that can bind with receptors on the cell membrane. Ox
pm pm pm pm pm pm pm pm pm pm pm pm pm
ygen moves by diffusion; it does not bind to receptors.
pm pm pm pm pm pm pm pm pm
Ribosomes make proteins and are not involved in binding
pm pm pm pm pm pm pm pm
. Amphipathic lipids are a portion of the cell membrane.
pm pm pm pm pm pm pm pm pm
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding wou
pm pm pm pm pm pm pm pm pm pm pm pm pm pm
ld support the diagnosis of metastatic cancer? Alterations in extracellular matrix that incl
pm pm pm pm pm pm pm pm pm pm pm pm
ude:
a. Decreased fibronectin pm
b. Increased collagen pm
c. Decreased elastin pm
