McCance,Valentina L.Brashers | Complete Study Guide
Test Bank For Understanding Pathophysiology
7th Edition By Sue E.Huether, Kathryn L.
McCance,Valentina L.Brashers | Complete
Study Guide
Chapter 01: Cellular Biology
MULTIPLE CHOICE
1. A student is observing a cell under the microscope. It is observed to have supercoiled
DNAwith 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
itsnucleus; thus, the nucleus should be observed. A single circular chromosome called a
prokaryote contains free-floating nuclear material but has no organelles.
Test Bank For Understanding Pathophysiology 7th Edition By Sue E.Huether, Kathryn L.
McCance,Valentina L.Brashers | Complete Study Guide
,Test Bank For Understanding Pathophysiology 7th Edition By Sue E.Huether, Kathryn L.
McCance,Valentina L.Brashers | Complete Study Guide
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 cell’s ability to absorb oxygen is referred to as respiration while its
communication ability involves maintenance of a ste adNy dynamic state,
metabolic absorption provides nutrition, and secretion allows for the
synthesizing of new substances.
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 cytoplasm
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, which is located within the cell’s nucleus. Mitochondria is
associated with cellular respiration while ribosomes are involved with
protein manufacturing. Cytoplasm is a fluid filling that is a component of
the cell.
4. Which of the following can remove proteins attached to the cell’s bilayer
by dissolving the layer itself?
a. Peripheral membrane proteins
b. Integral membrane proteins
c. Glycoproteins
d. Cell adhesion molecules
Test Bank For Understanding Pathophysiology 7th Edition By Sue E.Huether, Kathryn L.
McCance,Valentina L.Brashers | Complete Study Guide
,Test Bank For Understanding Pathophysiology 7th Edition By Sue E.Huether, Kathryn L.
McCance,Valentina L.Brashers | Complete Study Guide
ANS: B
Proteins directly attached to the membrane bilayer can be removed by the
action of integral membrane proteins that dissolve the bilayer. Peripheral
membrane proteins reside at the surface while cell adhesion molecules are
on the outside of the membrane. Glycoprotein marks cells and does not
float.
5. Which of the following can bind to plasma membrane receptors?
a. Oxygen
b. Ribosomes
c. Amphipathic lipids
d. Ligands
ANS: D
Ligands are the only specific molecules that can bind with receptors on the cell
membrane.
6. A nurse is reviewing a report from a patient with metastatic cancer. What
alternation in the extracellular matrix would support the diagnosis of
metastatic cancer?
a. Decreased fibronectin
b. Increased collagen
c. Decreased elastin
d. Increased glycoproteins
ANS: A
Only a reduced amount of fibronectin is found in some types of cancerous
cells, allowing them to travel or metastasize.
7. Which form of cell communication is used to relate to other cells in direct
physical contact?
a. Cell junction N
b. Gap junction
c. Desmosome
d. Tight junction
ANS: A
Cell junctions hold cells together and permit molecules to pass from cell to cell.
Gap junctions allow for cellular communication between cells. Neither
desmosomes nor tight junctions are associated with cellular communication.
8. Pancreatic beta cells secrete insulin, which inhibits secretion of glucagon
from neighboring alpha cells. This action is an example of which of the
following signaling types?
a. Paracrine
b. Autocrine
c. Neurohormonal
d. Hormonal
ANS: A
Paracrine signaling involves the release of local chemical mediators that are
quickly taken up, destroyed, or immobilized, as in the case of insulin and
Test Bank For Understanding Pathophysiology 7th Edition By Sue E.Huether, Kathryn L.
McCance,Valentina L.Brashers | Complete Study Guide
, Test Bank For Understanding Pathophysiology 7th Edition By Sue E.Huether, Kathryn L.
McCance,Valentina L.Brashers | Complete Study Guide
the inhibition of the secretion of glucagon. None of the other options involve
signaling that is associated with a local chemical mediator like insulin.
9. In cellular metabolism, each enzyme has a high affinity for a:
a. solute.
Test Bank For Understanding Pathophysiology 7th Edition By Sue E.Huether, Kathryn L.
McCance,Valentina L.Brashers | Complete Study Guide