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Test Bank For Understanding Pathophysiology 7th Edition Hueth

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Test Bank Chapter 1. Cellular Biology MULTIPLE CHOICE 1. A student is observing a cell under the microscope. It is observed to have supercoiled DNAwith histones. Which of the following would also be observed by the student? a. A single circular chromosome b. A nucleus c. Free-floating nucl...

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  • September 5, 2023
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Test Bank For
Understanding
Pathophysiology 7th Edition




Understanding Pathophysiology 7th edition by Huether, McCance

,Test Bank


Chapter 1. Cellular Biology

MULTIPLE CHOICE

1. A student is observing a cell under the microscope. It is observed to have
supercoiled DNA with histones. Which of the following would also be observed by the
student?

a. A single circular chromosome
b. A nucleus
c. Free-floating nuclear material
d. No organelles


ANS: B

The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA
within its nucleus; thus, the nucleus should be observed.

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

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

Eukaryotic cells have membrane bounded cellular components called organelles. No
organelles describes a prokaryotic cell.

2. A nurse is instructing the staff about cellular functions. Which cellular function is
the nurse describing when an isolated cell absorbs oxygen and uses it to transform
nutrients to energy?

a. Metabolic absorption
b. Communication
c. Secretion
d. Respiration

,ANS: D

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

The ability of the cell to function within a society of cells refers to its
function of communication.

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

The ability of the cell to synthesize new substances and secrete these elsewhere refers
to the cells function of secretion.

3. A eukaryotic cell is undergoing DNA replication. In which region of the cell would
most of the genetic information be contained?

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


ANS: C

The region of the cell that contains genetic material, including a large amount of
ribonucleic acid, most of the DNA, and DNA-binding proteins, is the nucleolus.

The mitochondria is the site of cellular respiration.

The ribosomes are involved in manufacturing of proteins within the cell.

The nucleus contains the nucleolus, and it is the nucleolus that contains genetic material.

4. The fluid mosaic model for biologic membranes describes membrane behavior.
According to this model, which of the following float singly or as aggregates in the fluid
lipid bilayer?

a. Peripheral membrane proteins
b. Integral membrane proteins

, c. Glycoproteins
d. Cell adhesion molecules


ANS: B

Integral membrane proteins float freely in the fluid lipid bilayer.

Peripheral membrane proteins are not embedded in the layer, but reside at

the surface. Glycoproteins act as cell surface markers.

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

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

a. Oxygen
b. Ribosomes
c. Amphipathic lipids
d. Ligands


ANS: D

Ligands are specific molecules that can bind with receptors on the cell

membrane. Oxygen moves by diffusion; it does not bind to receptors.

Ribosomes make proteins and are not involved in

binding. Amphipathic lipids are a portion of the cell

membrane.

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

a. Decreased fibronectin
b. Increased collagen

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