Understanding Pathophysiology 8th Edition - Complete Test Bank with Verified Questions & AnswersWith Rationals | Sue E. Huether, Kathryn L. McCance, Valentina L. Brashers | A+ Exam Preparation Material

, Understanding Pathophysiology 8th Edition Test Bank 2p 2p 2p 2p 2p




Chapter 1. Cellular Biology
2p 2p 2p




MULTIPLE CHOICE 2p




1. A student is observing a cell under the microscope. It is observed to have supercoiled D
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NA with histones. Which of the following would also be observed by the student?
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a. A single circular chromosome
2p 2p 2p




b. A nucleus 2p




c. Free-floating nuclear material 2p 2p




d. No organelles 2p




ANS: B 2p




The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nuc
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p



leus; thus, the nucleus should be observed.
2p 2p 2p 2p 2p 2p




A single circular chromosome is characteristic of prokaryotic cells, which do not have histones
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p


.

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
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2



describes a prokaryotic cell.
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2. A nurse is instructing the staff about cellular functions. Which cellular function is the nur
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p



se describing when an isolated cell absorbs oxygen and uses it to transform nutrients to en
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p



ergy?

a. Metabolic absorption 2p




b. Communication
c. Secretion
d. Respiration

,ANS: D 2p




The ability of the cell to absorb oxygen refers to the cells function of respiration.
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p




The ability of the cell to function within a society of cells refers to its function of communic
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p



ation.

The ability of the cell to take in nutrients refers to the cells function of metabolic absorption.
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p




The ability of the cell to synthesize new substances and secrete these elsewhere refers to the ce
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p



lls function of secretion.
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3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2



of the genetic information be contained?
p 2p 2p 2p 2p 2p




a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus


ANS: C 2p




The region of the cell that contains genetic material, including a large amount of ribonucleic
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2



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.
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p




4. The fluid mosaic model for biologic membranes describes membrane behavior. According
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p



to this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p




a. Peripheral membrane proteins 2p 2p




b. Integral membrane proteins
2p 2p

, c. Glycoproteins
d. Cell adhesion molecules
2p 2p




ANS: B 2p




Integral membrane proteins float freely in the fluid lipid bilayer.
2p 2p 2p 2p 2p 2p 2p 2p 2p




Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycopr
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p




oteins act as cell surface markers.
2p 2p 2p 2p 2p




Cell adhesion molecules are on the outside of the membrane and allow cells to hook together.
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p




5. Which of the following can bind to plasma membrane receptors?
2p 2p 2p 2p 2p 2p 2p 2p 2p




a. Oxygen
b. Ribosomes
c. Amphipathic lipids 2p




d. Ligands


ANS: D 2p




Ligands are specific molecules that can bind with receptors on the cell membrane. Ox
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p




ygen moves by diffusion; it does not bind to receptors.
2p 2p 2p 2p 2p 2p 2p 2p 2p




Ribosomes make proteins and are not involved in bindin
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g. Amphipathic lipids are a portion of the cell membran
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e.

6. A nurse is reviewing a report from a patient with metastatic cancer. What finding wou
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p



ld support the diagnosis of metastatic cancer? Alterations in extracellular matrix that incl
2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p 2p



ude:

a. Decreased fibronectin 2p




b. Increased collagen 2p




c. Decreased elastin 2p