Understanding Pathophysiology 6th Edition Huether Test Bank - All Chapters.

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, Test Bank Understanding Pathophysiology 6th Edition


Chapter 01: Cellular Biology
Huether & McCance: Understanding Pathophysiology, 6th Edition



MULTIPLE CHOICES


1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA
with 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 its
nucleus; thus, the nucleus should be observed. A single circular chromosome called a
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prokaryote contains 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
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describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
a. Metabolic absorption
b. Communication
c. Secretion
d. Respiration
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ANS: D
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, Test Bank Understanding Pathophysiology 6th Edition
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
secretion allows for the synthesizing of new substances.


REF: p. 2


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
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cell.


REF: p. 2

4. Which of the following can remove proteins attached to the cell’s bilayer by dissolving the
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layer itself?
a. Peripheral membrane proteins
b. Integral membrane proteins
c. Glycoproteins
d. Cell adhesion molecules
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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
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marks cells and does not float.


REF: p. 7


5. Which of the following can bind to plasma membrane receptors?
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, Test Bank Understanding Pathophysiology 6th Edition
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.


REF: p. 9


6. A nurse is reviewing a report from a patient with metastatic cancer. What alternation in the

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extracellular matrix would suN rtSthIeNdG
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metastatic cancer?
a. Decreased fibronectin
b. Increased collagen
c. Decreased elastin
d. Increased glycoproteins

ANS: A
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Only a reduced amount of fibronectin is found in some types of cancerous cells, allowing
them to travel or metastasize.


REF: p. 10
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7. Which form of cell communication is used to relate to other cells in direct physical contact?
a. Cell junction
b. Gap junction
c. Desmosome
d. Tight junction
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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.
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REF: p. 11
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