, UnderstandingPathophysiology8thEditionTestBank
Chapter 1. Cellular Biology b3 b3 b3
MULTIPLE CHOICE b 3
1. A student is observing a cell under the microscope. It is observed to have supercoiled D NA w
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
ith histones. Which of the following would also be observed by the student?
b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3
a. A single circular chromosome
b3 b3 b3
b. A nucleus b 3
c. Free-floating nuclear material b3 b3
d. No organelles b3
ANS: B b3
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nuc l
b3 b3 b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3 vt b3 b3 b3 b 3
e us; thus, the nucleus should be observed.
b3 b3 b3 b3 b3 b3 b3
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
.
Free-
floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles descri be
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
s a prokaryotic cell.
vt b3 b3
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nur s
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
e describing when an isolated cell absorbs oxygen and uses it to transform nutrients to en er
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3
gy?
a. Metabolic absorption b3
b. Communication
c. Secretion
d. Respiration
,ANS: D b3
The ability of the cell to absorb oxygen refers to the cells function of respiration.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b 3 b3 b3
The ability of the cell to function within a society of cells refers to its function of communic ati
b3 b3 b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3 b3 b3 b3 b3 b3 b
3 on.
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the ce ll
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
s function of secretion.
b3 b3 b3
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 vt b 3
of the genetic information be contained?
b3 b3 b3 vt b3
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C b3
The region of the cell that contains genetic material, including a large amount of ribonucleic ac
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3 b
3 id, most of the DNA, and DNA-binding proteins, is the nucleolus.
b 3 b 3 b3 b3 b3 b3 b3 b 3 b3 b3
The mitochondria is the site of cellular respiration.
b3 b3 b3 b3 b3 b3 b3
The ribosomes are involved in manufacturing of proteins within the cell.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
4. The fluid mosaic model for biologic membranes describes membrane behavior. According t
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
o this model, which of the following float singly or as aggregates in the fluid lipid
b3 b3 b3 b 3 b3 b 3 b 3 b3 b3 b 3 b 3 b 3 b3 b3 b 3
b3 bilayer?
a. Peripheral membrane proteins b3 b3
b. Integral membrane proteins b3 b3
, c. Glycoproteins
d. Cell adhesion molecules b3 b3
ANS: B b3
Integral membrane proteins float freely in the fluid lipid bilayer.
b3 b3 b3 b3 b3 b3 b3 b3 b3
Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycopr ote
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
i ns act as cell surface markers.
b3 b3 b3 b3 b3 b3
Cell adhesion molecules are on the outside of the membrane and allow cells to hook to
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
gether.
5. Which of the following can bind to plasma membrane receptors?
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
a. Oxygen
b. Ribosomes
c. Amphipathic lipids b3
d. Ligands
ANS: D b3
Ligands are specific molecules that can bind with receptors on the cell membrane. Ox y
b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3 b3 b3 b3
g en moves by diffusion; it does not bind to receptors.
b3 b3 b3 b3 b3 vt b3 vt b3 b3
Ribosomes make proteins and are not involved in bindin
b3 b3 b3 b3 b3 b3 b3 b3
g. Amphipathic lipids are a portion of the cell membran
b3 b3 b3 b3 b3 b3 b3 b3 b3 b 3
e.
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding wou ld
b3 b3 b3 b3 b3 vt b3 b3 b3 vt b3 b3 b3 b3 b3 b3
s upport the diagnosis of metastatic cancer? Alterations in extracellular matrix that incl u
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
de:
a. Decreased fibronectin b3
b. Increased collagen b3
c. Decreased elastin b3
Chapter 1. Cellular Biology b3 b3 b3
MULTIPLE CHOICE b 3
1. A student is observing a cell under the microscope. It is observed to have supercoiled D NA w
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
ith histones. Which of the following would also be observed by the student?
b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3 b 3
a. A single circular chromosome
b3 b3 b3
b. A nucleus b 3
c. Free-floating nuclear material b3 b3
d. No organelles b3
ANS: B b3
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nuc l
b3 b3 b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3 vt b3 b3 b3 b 3
e us; thus, the nucleus should be observed.
b3 b3 b3 b3 b3 b3 b3
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
.
Free-
floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles descri be
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
s a prokaryotic cell.
vt b3 b3
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nur s
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
e describing when an isolated cell absorbs oxygen and uses it to transform nutrients to en er
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3
gy?
a. Metabolic absorption b3
b. Communication
c. Secretion
d. Respiration
,ANS: D b3
The ability of the cell to absorb oxygen refers to the cells function of respiration.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b 3 b3 b3
The ability of the cell to function within a society of cells refers to its function of communic ati
b3 b3 b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3 b3 b3 b3 b3 b3 b
3 on.
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the ce ll
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
s function of secretion.
b3 b3 b3
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 vt b 3
of the genetic information be contained?
b3 b3 b3 vt b3
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C b3
The region of the cell that contains genetic material, including a large amount of ribonucleic ac
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3 b
3 id, most of the DNA, and DNA-binding proteins, is the nucleolus.
b 3 b 3 b3 b3 b3 b3 b3 b 3 b3 b3
The mitochondria is the site of cellular respiration.
b3 b3 b3 b3 b3 b3 b3
The ribosomes are involved in manufacturing of proteins within the cell.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
4. The fluid mosaic model for biologic membranes describes membrane behavior. According t
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
o this model, which of the following float singly or as aggregates in the fluid lipid
b3 b3 b3 b 3 b3 b 3 b 3 b3 b3 b 3 b 3 b 3 b3 b3 b 3
b3 bilayer?
a. Peripheral membrane proteins b3 b3
b. Integral membrane proteins b3 b3
, c. Glycoproteins
d. Cell adhesion molecules b3 b3
ANS: B b3
Integral membrane proteins float freely in the fluid lipid bilayer.
b3 b3 b3 b3 b3 b3 b3 b3 b3
Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycopr ote
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
i ns act as cell surface markers.
b3 b3 b3 b3 b3 b3
Cell adhesion molecules are on the outside of the membrane and allow cells to hook to
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
gether.
5. Which of the following can bind to plasma membrane receptors?
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
a. Oxygen
b. Ribosomes
c. Amphipathic lipids b3
d. Ligands
ANS: D b3
Ligands are specific molecules that can bind with receptors on the cell membrane. Ox y
b3 b3 b3 b3 b3 b3 vt b3 b3 b3 b3 b3 b3 b3
g en moves by diffusion; it does not bind to receptors.
b3 b3 b3 b3 b3 vt b3 vt b3 b3
Ribosomes make proteins and are not involved in bindin
b3 b3 b3 b3 b3 b3 b3 b3
g. Amphipathic lipids are a portion of the cell membran
b3 b3 b3 b3 b3 b3 b3 b3 b3 b 3
e.
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding wou ld
b3 b3 b3 b3 b3 vt b3 b3 b3 vt b3 b3 b3 b3 b3 b3
s upport the diagnosis of metastatic cancer? Alterations in extracellular matrix that incl u
b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3 b3
de:
a. Decreased fibronectin b3
b. Increased collagen b3
c. Decreased elastin b3
