,Understanding Pathophysiology 7th edition by Huether, McCance Test Bank
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hAll well solved complete (questions and answers) solution in this test bank
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,Chapter 1. Cellular Biology hh hh hh
MULTIPLE CHOICE hh
1. A student is observing a cell under the microscope. It is observed to have supercoiled
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hh 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 hh
c. Free-floating nuclear material hh hh
d. No organelles hh
ANS: B hh
The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its
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hh nucleus; 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
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hh nucleus.
Eukaryotic cells have membrane bounded cellular components called organelles. No organelles
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hh describes a prokaryotic cell. hh hh hh
2. A nurse is instructing the staff about cellular functions. Which cellular function is the
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nurse describing when an isolated cell absorbs oxygen and uses it to transform nutrients to
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hh energy?
a. Metabolic absorption hh
b. Communication
c. Secretion
d. Respiration
, ANS: D hh
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
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hh communication.
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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hh function of secretion. hh hh
3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would most
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hh of the genetic information be contained?
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a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C hh
The region of the cell that contains genetic material, including a large amount of ribonucleic
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hh 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. According
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to this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
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a. Peripheral membrane proteins hh hh
b. Integral membrane proteins hh hh
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