Test Bank for Understanding Pathophysiology, 8th Edition by Sue E. Huether, Kathryn L. McCance and Valentina L. Brashers All Chapters 1-44 Verified Latest Edition

Test Bank Understanding Pathophysiology 7th Edition
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Chapter 01: Cellular Biology
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, Test Bank Understanding Pathophysiology 7th Edition
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Huether & McCance: Understanding Pathophysiology, 7th Edition
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MULTIPLE CHOICES 3i




1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA
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with 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 3i



c. Free-floating nuclear material 3i 3i



d. No organelles 3i




ANS: B 3i




The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within it
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snucleus; thus, the nucleus should be observed. A single circular chromosome called a pr
i
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okaryote contains free-floating nuclear material but has no organelles.
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REF: p. 2 3i 3i




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?
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a. Metabolic absorption 3i



b. Communication
c. Secretion
d. Respiration

ANS: D 3i




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, Test Bank Understanding Pathophysiology 7th Edition
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The cell’s ability to absorb oxygen is referred to as respiration while its communication abilit
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yinvolves maintenance of a steady dynamic state, metabolic absorption provides nutrition, and
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secretion allows for the synthesizing of new substances.
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REF: p. 2 3i 3i




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




ANS: C 3i




The region of the cell that contains genetic material, including a large amount of ribonucleic
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acid, most of the DNA, and DNA-
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binding proteins, is the nucleolus, which is located withinthe cell’s nucleus. Mitochondria i
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s associated with cellular respiration, while ribosomes are involved with protein manufactur
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ing. Cytoplasm is a fluid filling that is a component of the cell.
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REF: p. 2 3i 3i




4. Which of the following can remove proteins attached to the cell’s bilayer by dissolving the
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layer itself? 3i



a. Peripheral membrane proteins 3i 3i



b. Integral membrane proteins 3i 3i



c. Glycoproteins
d. Cell adhesion molecules 3i 3i




ANS: B 3i




Proteins directly attached to the membrane bilayer can be removed by the action of integral
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membrane proteins that dissolve the bilayer. Peripheral membrane proteins reside at the sur
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face while cell adhesion molecules are on the outside of the membrane. Glycoprotein marks
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cells and does not float.
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REF: p. 7 3i 3i




5. Which of the following can bind to plasma membrane receptors?
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, Test Bank Understanding Pathophysiology 7th Edition
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a. Oxygen
b. Ribosomes
c. Amphipathic lipids 3i



d. Ligands

ANS: D 3i



Ligands are the only specific molecules that can bind with receptors on the cell membrane.
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REF: p. 9 3i 3i




6. A nurse is reviewing a report from a patient with metastatic cancer. What alternation in th
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eextracellular matrix would suNpoRrtSthIeNdG
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3imetastatic cancer? 3i 3i 3i 3i




a. Decreased fibronectin 3i



b. Increased collagen 3i



c. Decreased elastin 3i



d. Increased glycoproteins 3i




ANS: A 3i




Only a reduced amount of fibronectin is found in some types of cancerous cells, allowing
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them to travel or metastasize.
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REF: p. 10 3i 3i




7. Which form of cell communication is used to relate to other cells in direct physical contact?
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a. Cell junction 3i




b. Gap junction 3i



c. Desmosome
d. Tight junction 3i




ANS: A 3i




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 tight
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junctions are associated with cellular communication.
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REF: p. 11 3i 3i




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