TEST BANK FOR Understanding Pathophysiology, 7th Edition by Sue E. Huether and Kathryn L. McCance ISBN: 9780323639088 ALL CHAPTERS COVERED 100 % VERIFIED A+ GRADE ASSURED!!!!NEW LATEST UPDATE!!!!GUARANTEED PASSING!!!SUCCES!!!!!

, Understanding Pathophysiology 7th Edition Test Bank xt xt xt xt xt




Chapter 1. Cellular Biologyxt xt xt




MULTIPLE CHOICE xt




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 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 its nucleu
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s; thus, the nucleus should be observed.
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A single circular chromosome is characteristic of prokaryotic cells, which do not have histones.
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Free-
floating nuclear material describes a prokaryotic cell, which would not have a distinct nucleus.
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Eukaryotic cells have membrane bounded cellular components called organelles. No organelles d
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escribes a prokaryotic cell.
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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 xt




b. Communication
c. Secretion
d. Respiration

,ANS: D xt




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 communicati
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on.

The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
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The ability of the cell to synthesize new substances and secrete these elsewhere refers to the cells
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function of secretion. xt xt




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


ANS: C xt




The region of the cell that contains genetic material, including a large amount of ribonucleic ac
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id, 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. According to
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this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
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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




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. Glycoprote
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ins act as cell surface markers.
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Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
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5. Which of the following can bind to plasma membrane receptors?
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a. Oxygen
b. Ribosomes
c. Amphipathic lipids xt




d. Ligands


ANS: D xt




Ligands are specific molecules that can bind with receptors on the cell membrane. Oxyg
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en moves by diffusion; it does not bind to receptors.
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Ribosomes make proteins and are not involved in binding.
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Amphipathic lipids are a portion of the cell membrane. xt xt xt xt xt xt xt xt




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




b. Increased collagen xt




c. Decreased elastin xt