UNDERSTANDING PATHOPHYSIOLOGY 7TH EDITION TEST BANK
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
ANS: 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
ANS: 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.
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
,ANS: 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
ANS: 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
c. Amphipathic lipids
d. Ligands
ANS: 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
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
ANS: 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
ANS: 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.
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
,ANS: 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
ANS: 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
c. Amphipathic lipids
d. Ligands
ANS: 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
