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TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2nd Edition, All Chapters 1 - 42, Complete Newest Version$14.99
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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
ANSWER : 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 called a prokaryotecontains free-floating nuclear material but has no
organelles.
REF: p. 2
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 trANSWER form nutrients to energy?
a. Metabolic absorption
b. Communication
c. Secretion
d. Respiration
ANSWER : D
The cell’s ability to absorb oxygen is referred to as respiration while its communication ability involves maintenance of a steady
dynamic state, metabolic absorption provides nutrition, and secretionallows for the synthesizing of new substances.
REF: p. 2
1
, Understanding Pathophysiology 6th Edition Huether Test Bank
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of thegenetic information be
contained?
a. Mitochondria
2
, Understanding Pathophysiology 6th Edition Huether Test Bank
b. Ribosome
c. Nucleolus
d. Nucleus Cytoplasm
ANSWER : 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 thecell’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.
REF: p. 2
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
ANSWER : 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 markscells and does not float.
REF: p. 7
5. Which of the following can bind to plasma membrane receptors?
a. Oxygen
b. Ribosomes
c. Amphipathic lipids
d. Ligands
ANSWER : D
Ligands are the only specific molecules that can bind with receptors on the cell membrane.
REF: p. 9
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. NURSINGTB.COM
3
, Understanding Pathophysiology 6th Edition Huether Test Bank
Decreased fibronectin
b. Increased collagen
c. Decreased elastin
d. Increased glycoproteins
ANSWER : A
Only a reduced amount of fibronectin is found in some types of cancerous cells, allowing themto travel or metastasize.
REF: p. 10
7. Which form of cell communication is used to relate to other cells in direct physical contact? a. Celljunction
b. Gap junction
c. Desmosome
d. Tight junction
ANSWER : 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 junctionsare associated with cellular
communication.
REF: p. 11
8. Pancreatic beta cells secrete insulin, which inhibits secretion of glucagon from neighboring alphacells. This action is an
example of which of the following signaling types? a. Paracrine
b. Autocrine
c. Neurohormonal
d. Hormonal
ANSWER : 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 the inhibition of the secretion of glucagon.None of the other options involve signaling that is
associated with a local chemical mediator like insulin.
REF: p. 12
9. In cellular metabolism, each enzyme has a high affinity for a:
a. solute.
b. substrate.
c. receptor.
d. ribosome.
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