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