, UnderstandingPathophysiology 7thEditionTestBank v v v v v
Chapter 1. Cellular Biology v v v
MULTIPLE CHOICE v
1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with
v v v v v v v v v v v v v v v v
v histones. Which of the following would also be observed by the student?
v v v v v v v v v v v
a. A single circular chromosome
v v v
b. A nucleus v
c. Free-floating nuclear material v v
d. No organelles v
ANS: B v
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus;
v v v v v v v v v v v v v v v v v
v thus, the nucleus should be observed.
v v v v v
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones.
v v v v v v v v v v v v v
Free-floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
v v v v v v v v v v v v v
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles describes
v v v v v v v v v v v
v a prokaryotic cell.
v v
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nurse
v v v v v v v v v v v v v v
v describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
v v v v v v v v v v v v v v
a. Metabolic absorption v
b. Communication
c. Secretion
d. Respiration
,ANS: D v
The ability of the cell to absorb oxygen refers to the cells function of respiration.
v v v v v v v v v v v v v v
The ability of the cell to function within a society of cells refers to its function of communication.
v v v v v v v v v v v v v v v v v
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
v v v v v v v v v v v v v v v v
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the cells function
v v v v v v v v v v v v v v v v v
v of secretion.
v
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of the
v v v v v v v v v v v v v v v v
v genetic information be contained?
v v v
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C v
The region of the cell that contains genetic material, including a large amount of ribonucleic acid,
v v v v v v v v v v v v v v v
v most of the DNA, and DNA-binding proteins, is the nucleolus.
v v v v v v v v v
The mitochondria is the site of cellular respiration.
v v v v v v v
The ribosomes are involved in manufacturing of proteins within the cell.
v v v v v v v v v v
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
v v v v v v v v v v v v v
4. The fluid mosaic model for biologic membranes describes membrane behavior. According to this
v v v v v v v v v v v v
v model, which of the following float singly or as aggregates in the fluid lipid bilayer?
v v v v v v v v v v v v v v
a. Peripheral membrane proteins v v
b. Integral membrane proteins v v
, c. Glycoproteins
d. Cell adhesion molecules
v v
ANS: B v
Integral membrane proteins float freely in the fluid lipid bilayer.
v v v v v v v v v
Peripheral membrane proteins are not embedded in the layer, but reside at the surface.
v v v v v v v v v v v v v
v Glycoproteins act as cell surface markers. v v v v v
Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
v v v v v v v v v v v v v v v
5. Which of the following can bind to plasma membrane receptors?
v v v v v v v v v
a. Oxygen
b. Ribosomes
c. Amphipathic lipids v
d. Ligands
ANS: D v
Ligands are specific molecules that can bind with receptors on the cell membrane. Oxygen
v v v v v v v v v v v v v
v moves by diffusion; it does not bind to receptors.
v v v v v v v v
Ribosomes make proteins and are not involved in binding.
v v v v v v v v
v Amphipathic lipids are a portion of the cell membrane. v v v v v v v v
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding would
v v v v v v v v v v v v v v
v support the diagnosis of metastatic cancer? Alterations in extracellular matrix that include:
v v v v v v v v v v v
a. Decreased fibronectin v
b. Increased collagen v
c. Decreased elastin v
Chapter 1. Cellular Biology v v v
MULTIPLE CHOICE v
1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with
v v v v v v v v v v v v v v v v
v histones. Which of the following would also be observed by the student?
v v v v v v v v v v v
a. A single circular chromosome
v v v
b. A nucleus v
c. Free-floating nuclear material v v
d. No organelles v
ANS: B v
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus;
v v v v v v v v v v v v v v v v v
v thus, the nucleus should be observed.
v v v v v
A single circular chromosome is characteristic of prokaryotic cells, which do not have histones.
v v v v v v v v v v v v v
Free-floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
v v v v v v v v v v v v v
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles describes
v v v v v v v v v v v
v a prokaryotic cell.
v v
2. A nurse is instructing the staff about cellular functions. Which cellular function is the nurse
v v v v v v v v v v v v v v
v describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
v v v v v v v v v v v v v v
a. Metabolic absorption v
b. Communication
c. Secretion
d. Respiration
,ANS: D v
The ability of the cell to absorb oxygen refers to the cells function of respiration.
v v v v v v v v v v v v v v
The ability of the cell to function within a society of cells refers to its function of communication.
v v v v v v v v v v v v v v v v v
The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
v v v v v v v v v v v v v v v v
The ability of the cell to synthesize new substances and secrete these elsewhere refers to the cells function
v v v v v v v v v v v v v v v v v
v of secretion.
v
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of the
v v v v v v v v v v v v v v v v
v genetic information be contained?
v v v
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C v
The region of the cell that contains genetic material, including a large amount of ribonucleic acid,
v v v v v v v v v v v v v v v
v most of the DNA, and DNA-binding proteins, is the nucleolus.
v v v v v v v v v
The mitochondria is the site of cellular respiration.
v v v v v v v
The ribosomes are involved in manufacturing of proteins within the cell.
v v v v v v v v v v
The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
v v v v v v v v v v v v v
4. The fluid mosaic model for biologic membranes describes membrane behavior. According to this
v v v v v v v v v v v v
v model, which of the following float singly or as aggregates in the fluid lipid bilayer?
v v v v v v v v v v v v v v
a. Peripheral membrane proteins v v
b. Integral membrane proteins v v
, c. Glycoproteins
d. Cell adhesion molecules
v v
ANS: B v
Integral membrane proteins float freely in the fluid lipid bilayer.
v v v v v v v v v
Peripheral membrane proteins are not embedded in the layer, but reside at the surface.
v v v v v v v v v v v v v
v Glycoproteins act as cell surface markers. v v v v v
Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
v v v v v v v v v v v v v v v
5. Which of the following can bind to plasma membrane receptors?
v v v v v v v v v
a. Oxygen
b. Ribosomes
c. Amphipathic lipids v
d. Ligands
ANS: D v
Ligands are specific molecules that can bind with receptors on the cell membrane. Oxygen
v v v v v v v v v v v v v
v moves by diffusion; it does not bind to receptors.
v v v v v v v v
Ribosomes make proteins and are not involved in binding.
v v v v v v v v
v Amphipathic lipids are a portion of the cell membrane. v v v v v v v v
6. A nurse is reviewing a report from a patient with metastatic cancer. What finding would
v v v v v v v v v v v v v v
v support the diagnosis of metastatic cancer? Alterations in extracellular matrix that include:
v v v v v v v v v v v
a. Decreased fibronectin v
b. Increased collagen v
c. Decreased elastin v
