TEST BANK FOR Understanding Pathophysiology, 8th Edition by Sue E. Huether, Kathryn L. McCance, ISBN:9780323937283 COMPLETE GUIDE ALL CHAPTERS COVERED WITH RATIONALES 100% VERIFIED A+ GRADE ASSURED!!!!!NEW LATEST UPDATE!!!!!

, Understanding Pathophysiology8th Edition Test Bank 5% 5% 5% 5%




Chapter 1. Cellular Biology
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MULTIPLE CHOICE 5%




1. A student is observing a cell under the microscope. It is observed to have supercoiled
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5% DNA 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 5%




c. Free-floating nuclear material 5% 5%




d. No organelles 5%




ANS: B 5%




The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its
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%nucleus; thus, the nucleus should be observed.
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A single circular chromosome is characteristic of prokaryotic cells, which do not have hist
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ones.

Free-
floating nuclear material describes a prokaryotic cell, which would not have a distinct nucle
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us.

Eukaryotic cells have membrane bounded cellular components called organelles. No organell
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es describes a prokaryotic cell.
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2. A nurse is instructing the staff about cellular functions. Which cellular function is the
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%nurse describing when an isolated cell absorbs oxygen and uses it to transform nutrient
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s to energy?
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a. Metabolic absorption 5%




b. Communication
c. Secretion
d. Respiration

,ANS: D 5%




The ability of the cell to absorb oxygen refers to the cells function of respiration.
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The ability of the cell to function within a society of cells refers to its function of comm
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unication.

The ability of the cell to take in nutrients refers to the cells function of metabolic absorpti
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on.

The ability of the cell to synthesize new substances and secrete these elsewhere refers to th
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e cells function of secretion.
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3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would
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most of the genetic information be contained?
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a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus


ANS: C 5%




The region of the cell that contains genetic material, including a large amount of ribonuc
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leic acid, most of the DNA, and DNA-binding proteins, is the nucleolus.
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The mitochondria is the site of cellular respiration.
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The ribosomes are involved in manufacturing of proteins within the cell.
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The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.
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4. The fluid mosaic model for biologic membranes describes membrane behavior. Accordi
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ng to this model, which of the following float singly or as aggregates in the fluid lipid
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bilayer?

a. Peripheral membrane proteins 5% 5%




b. Integral membrane proteins 5% 5%

, c. Glycoproteins
d. Cell adhesion molecules
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ANS: B 5%




Integral membrane proteins float freely in the fluid lipid bilayer.
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Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glyc
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oproteins act as cell surface markers.
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Cell adhesion molecules are on the outside of the membrane and allow cells to hook toget
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her.

5. Which of the following can bind to plasma membrane receptors?
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a. Oxygen
b. Ribosomes
c. Amphipathic lipids 5%




d. Ligands


ANS: D 5%




Ligands are specific molecules that can bind with receptors on the cell membrane.
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Oxygen moves by diffusion; it does not bind to receptors.
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Ribosomes make proteins and are not involved in bindi
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ng. Amphipathic lipids are a portion of the cell memb
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rane.

6. A nurse is reviewing a report from a patient with metastatic cancer. What finding
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would support the diagnosis of metastatic cancer? Alterations in extracellular matrix t
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hat include:
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a. Decreased fibronectin 5%




b. Increased collagen 5%