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PATHOPHYSIOLOGY: THE BIOLOGIC BASIS FOR DISEASE IN ADULTS AND CHILDREN, 5TH EDITION TEST BANK QUESTIONS AND COMPLETE SOLUTIONS
Chapter AI01: AICellular AIBiology
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PATHOPHYSIOLOGY: THE BIOLOGIC BASIS FOR DISEASE IN
ADULTS AND CHILDREN, 5TH EDITION TEST
BANK QUESTIONS AND COMPLETE SOLUTIONS
Chapter 01: Cellular Biology AI AI AI
Huether and McCance: Understanding AI AI AI
Pathophysiology,5th Edition
AI IA AI
Chapter 01: Cellular AI AI
BiologyTest Bank
AI IA AI
MULTIPLE CHOICE AI
1. A student is observing a cell under the microscope. It is observed to have
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supercoiled DNA with histones. Which of the following would also be observed
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by
AI
the student?
AI AI A I AI
a. A single circular chromosome AI AI AI
b. A nucleus AI
c. Free-floating nuclear material AI AI
d. No organelles AI
ANS: B AI
The cell described is a eukaryotic cell, so it has histones and a supercoiled
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DNAwithin its nucleus; thus, the nucleus should be observed.
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A single circular chromosome is characteristic of prokaryotic cells, which do not
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havehistones.
AI IA
Free-floating nuclear material describes a prokaryotic cell, which would not have
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adistinct nucleus.
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Eukaryotic cells have membrane bounded cellular components called organelles.
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Noorganelles describes a prokaryotic cell.
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REF: p. 2 AI AI
2. A nurse is instructing the staff about cellular functions. Which cellular function
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isthe nurse describing when an isolated cell absorbs oxygen and uses it to
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transform
AI
nutrients to energy?
AI AI A I AI AI
a. Metabolic absorption AI
,b. Communication
c. Secretion
d. Respiration
ANS: D AI
The ability of the cell to absorb oxygen refers to the cell’s function of respiration.
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, The ability of the cell to function within a society of cells refers to its function
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ofcommunication.
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The ability of the cell to take in nutrients refers to the cell’s function of
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metabolicabsorption.
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The ability of the cell to synthesize new substances and secrete these elsewhere
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refersto the cell’s function of secretion.
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REF: p. 3 AI AI
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell
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wouldmost of the genetic information be contained?
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a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C AI
The region of the cell that contains genetic material, including a large amount
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of ribonucleic acid, most of the DNA, and DNA-binding proteins, is the
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nucleolus.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
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geneticmaterial.
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REF: p. 5 AI AI
4. The fluid mosaic model for biologic membranes describes membrane behavior.
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According to this model, which of the following float singly or as aggregates in
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the
AI
fluid lipid bilayer?
AI AI A I AI AI
a. Peripheral membrane proteins AI AI
b. Integral membrane proteins AI AI
c. Glycoproteins
d. Cell adhesion molecules
AI AI
ANS: B AI
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
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surface.Glycoproteins act as cell surface markers.
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, Cell adhesion molecules are on the outside of the membrane and allow cells to
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hooktogether.
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REF: p. 6 AI AI
5. Which of the following can bind to plasma membrane receptors?
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a. Oxygen
b. Ribosomes
c. Amphipathic lipids AI
d. Ligands
ANS: D AI
Ligands are specific molecules that can bind with receptors on the cell
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membrane.Oxygen moves by diffusion; it does not bind to receptors.
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Ribosomes make proteins and are not involved in AI AI AI AI AI AI AI
binding.Amphipathic lipids are a portion of the cell
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membrane.
AI
REF: p. 11 AI AI
6. A nurse is reviewing a report from a patient with metastatic cancer. What
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finding would support the diagnosis of metastatic cancer? Alterations in
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extracellular matrix
AI AI
that include:
AI AI A I AI
a. Decreased fibronectin AI
b. Increased collagen AI
c. Decreased elastin AI
d. Increased glycoproteins AI
ANS: A AI
Reduced amounts of fibronectin are found in some types of cancerous cells,
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allowingcancer cells to travel, or metastasize.
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Collagen provides strength, and its breakdown is associated with osteoarthritis,
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notcancer.
AI IA
Elastin is found in the lungs and allows tissues to stretch; it is not associated
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withcancerous cells.
AI IA AI
Decreased, not increased, glycoproteins are associated with cancerous
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cells.REF: p. 8
AI IA AI AI
7. Which form of cell communication is used to relate to other cells in direct
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physicalcontact?
AI IA
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