Test Bank for Understanding Pathophysiology 6th Edition by Sue E. Huether & Kathryn L. McCance, All Chapters 1-42, A+ guide.

Test Bank Understanding Pathophysiology 6th Editio
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, Test Bank Understanding Pathophysiology 6th Editio
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Chapter 01: Cellular Biology
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Huether & McCance: Understanding Pathophysiology, 6th Edition
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MULTIPLE CHOICES Xt




1. A student is observing a cell under the microscope. It is observed to have supercoiled D
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NAwith histones. Which of the following would also be observed by the student?
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a. A single circular chromosome
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b. A nucleus Xt



c. Free-floating nuclear material Xt Xt



d. No organelles Xt




ANS: B Xt




The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within
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itsnucleus; thus, the nucleus should be observed. A single circular chromosome called
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a prokaryote contains free-floating nuclear material but has no organelles.
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REF: p. 2 Xt Xt




2. A nurse is instructing the staff about cellular functions. Which cellular function is the nur
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se describing when an isolated cell absorbs oxygen and uses it to transform nutrients to en
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ergy?
a. Metabolic absorption Xt



b. Communication
c. Secretion
d. Respiration

ANS: D Xt




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, Test Bank Understanding Pathophysiology 6th Editio
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The cell’s ability ton absorb oxygen is referred to as respiration while its communication abi
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lityinvolves maintenance of a steady dynamic state, metabolic absorption provides nutrition,
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Xt and secretion allows for the synthesizing of new substances.
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REF: p. 2 Xt Xt




3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most
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Xt ofthe genetic information be contained?
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a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus Cytoplasm Xt




ANS: C Xt




The region of the cell that contains genetic material, including a large amount of ribonucl
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eicacid, most of the DNA, and DNA-
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binding proteins, is the nucleolus, which is located withinthe cell’s nucleus. Mitochondria
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Xt is associated with cellular respiration, while ribosomes are involved with protein manufa
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cturing. Cytoplasm is a fluid filling that is a component of the cell.
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REF: p. 2 Xt Xt




4. Which of the following can remove proteins attached to the cell’s bilayer by dissolving
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thelayer itself?
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a. Peripheral membrane proteins Xt Xt



b. Integral membrane proteins Xt Xt



c. Glycoproteins
d. Cell adhesion molecules Xt Xt




ANS: B Xt




Proteins directly attached to the membrane bilayer can be removed by the action of integr
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almembrane proteins that dissolve the bilayer. Peripheral membrane proteins reside at the
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Xt surface while cell adhesion molecules are on the outside of the membrane. Glycoprotein
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marks cells and does not float.
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REF: p. 7 Xt Xt




5. Which of the following can bind to plasma membrane receptors?
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, Test Bank Understanding Pathophysiology 6th Editio
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a. Oxygen n
b. Ribosomes
c. Amphipathic lipids Xt



d. Ligands

ANS: D Xt



Ligands are the only specific molecules that can bind with receptors on the cell membrane.
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REF: p. 9 Xt Xt




6. A nurse is reviewing a report from a patient with metastatic cancer. What alternation in
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tX pU
theextracellular matrix would suNpoRrtSthIeNdG
iaT
gnBo.
siC
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metastatic cancer?
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a. Decreased fibronectin Xt



b. Increased collagen Xt



c. Decreased elastin Xt



d. Increased glycoproteins Xt




ANS: A Xt




Only a reduced amount of fibronectin is found in some types of cancerous cells, allow
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ingthem to travel or metastasize.
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REF: p. 10 Xt Xt




7. Which form of cell communication is used to relate to other cells in direct physical contact?
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a. Cell junction Xt




b. Gap junction Xt



c. Desmosome
d. Tight junction Xt




ANS: A Xt




Cell junctions hold cells together and permit molecules to pass from cell to cell.
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Gap junctions allow for cellular communication between cells. Neither desmosomes nor tig
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htjunctions are associated with cellular communication.
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REF: p. 11 Xt Xt




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