TEST BANK FOR Huether: Understanding Pathophysiology, 7th Edition complete

Understanding Pathophysiology 7th edition by Huether, McCance Test Bank
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DAllwellsolvedcomplete(questionsandanswers)solutioninthistestbank
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,Chapter 1. Cellular Biology DP DP DP




MULTIPLE CHOICE DP




1. Astudent is observing a cellunder the microscope. It is observed to have supercoiled DNA with
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DP histones. Which of the following would also be observed by the student?
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a. Asingle circular chromosomeD
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b. A nucleus DP




c. Free-floating nuclear material DP DP




d. No organelles DP




ANS: B DP




The cell described is a eukaryotic cell, so it has histones and a supercoiled DNAwithin its nucleus;
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DP thus, the nucleus should be observed.
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Asingle circular chromosome is characteristic ofprokaryotic cells, which do not have histones.
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Free-floating nuclear materialdescribes a prokaryotic cell, whichwouldnot have a distinct nucleus.
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Eukaryotic cells have membrane bounded cellular components called organelles. No organelles describes
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DP a prokaryotic cell.
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2. A nurse is instructing the staff about cellular functions. Whichcellular function is the nurse
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DP describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
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a. Metabolic absorption DP




b. Communication
c. Secretion
d. Respiration

,ANS: D DP




The abilityof the cell to absorb oxygen refers to the cells function of respiration.
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The abilityof the cell to function within a societyof cells refers to its function of communication.
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The abilityof the cell to take in nutrients refers to the cells function of metabolic absorption.
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The abilityofthe cell to synthesize new substances and secrete these elsewhere refers to the cells function
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DP of secretion.
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3. Aeukaryotic cell is undergoing DNA replication. In which region ofthe cellwould most of the
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DP genetic information be contained? DP DP DP




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


ANS: C DP




The region ofthe cell that contains genetic material, including a large amount ofribonucleic acid,
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DP most of the DNA, and DNA-binding proteins, is the nucleolus.
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The mitochondria is the site ofcellular respiration.
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The ribosomes are involved in manufacturing ofproteins 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 modelfor biologic membranes describes membrane behavior. According to this
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DP model, which of the following float singly or as aggregates in the fluid lipid bilayer?
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a. Peripheralmembrane proteins D
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b. Integral membrane proteins DP DP

, c. Glycoproteins
d. Cell adhesion molecules DP DP




ANS: B DP




Integral membrane proteins float freely inthe fluid lipid bilayer.
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Peripheral membrane proteins are not embedded in the layer, but reside at the surface. Glycoproteins
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DP 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. Whichofthe following can bind to plasma membrane receptors?
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a. Oxygen
b. Ribosomes
c. Amphipathic lipids DP




d. Ligands


ANS: D DP




Ligands arespecific molecules that can bind withreceptors onthe cell membrane. Oxygen
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DP moves by diffusion; it does not bind to receptors.
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Ribosomes make proteinsand are not involved inbinding. DP DP DP DP DP DP DP D
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DP Amphipathic lipids are a portion of the cell membrane. DP DP DP DP DP DP DP DP




6. Anurse is reviewing areport froma patient with metastatic cancer. What finding would
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DP support thediagnosis ofmetastatic cancer? Alterations in extracellular matrix that include:
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a. Decreased fibronectin DP




b. Increased collagen DP




c. Decreased elastin DP