TEST BANK FOR McCance & Huether’s Pathophysiology: The Biologic Basis for Disease in Adults and Children 9th Edition by Julia Rogers ISBN:978-0323789875 ALL CHAPTERS COVERED YOUR ULTIMATE GUIDE 100% VERIFIED A+ GRADE ASSURED!!!!!!!! NEW LATEST UPDATE!!!!!

Understanding Pathophysiology Test Bank
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,Chapter 1. Cellular Biology
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MULTIPLE CHOICE GH




1. A student is observing a cell under the microscope. It is observed to have supercoile
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d 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 GH




c. Free-floating nuclear material GH GH




d. No organelles GH




ANS: B GH




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

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

Eukaryotic cells have membrane bounded cellular components called organelles. No organe
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lles describes a prokaryotic cell.
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2. A nurse is instructing the staff about cellular functions. Which cellular function is th
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e nurse describing when an isolated cell absorbs oxygen and uses it to transform nutri
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ents to energy?
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a. Metabolic absorption GH




b. Communication
c. Secretion
d. Respiration

,ANS: D GH




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 com
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munication.

The ability of the cell to take in nutrients refers to the cells function of metabolic absorp
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tion.

The ability of the cell to synthesize new substances and secrete these elsewhere refers to
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the 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 GH




The region of the cell that contains genetic material, including a large amount of ribonu
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cleic 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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H bilayer?

a. Peripheral membrane proteins GH GH




b. Integral membrane proteinsGH GH

, c. Glycoproteins
d. Cell adhesion molecules
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ANS: B GH




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. Gl
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ycoproteins act as cell surface markers.
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Cell adhesion molecules are on the outside of the membrane and allow cells to hook toge
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ther.

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




d. Ligands


ANS: D GH




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

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




b. Increased collagen GH