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New York University NUTR GE NURSE UN24 Patho Exam 1 Questions Answers.
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New York University NUTR GE NURSE UN24 Patho Exam 1 Questions Answers.
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The nucleus _________, which is1. essential for function and survival
of the cell.
A) is the site of protein synthesis
B) contains the genetic code
C) transforms cellular energy
D) initiates aerobic metabolism
Although energy is not made in
mitochondria, they are known as the
2.
“power plants” of the cell because
they:
A) contain RNA for protein synthesis.
utilize glycolysis for oxidative
B)
energy.
extract energy from organic
C)
compounds.
store calcium bonds for muscle
D)
contractions.
Although the basic structure of the
cell plasma membrane is formed by
3. a lipid bilayer, most of the specific
membrane functions are carried out
by:
A) bound and transmembrane proteins.
B) complex, long carbohydrate chains.
surface antigens and hormone
C)
receptors.
a gating system of selective ion
D)
channels.
, To effectively relay signals, cell-to-
4. cell communication utilizes
chemical messenger systems that:
A) displace surface receptor proteins.
accumulate within cell gap
B)
junctions.
C) bind to contractile microfilaments.
release secretions into extracellular
D)
fluid.
Aerobic metabolism, also known as
5. oxidative metabolism, provides
energy by:
removing the phosphate bonds from
A)
ATP.
combining hydrogen and oxygen to
B)
form water.
activating pyruvate stored in the
C)
cytoplasm.
breaking down glucose to form
D)
lactic acid.
Exocytosis, the reverse of
6. endocytosis, is important in
_______ into the extracellular fluid.
Engulfing and ingesting fluid and
A)
proteins for transport
B) Killing, degrading, and dissolving
, harmful microorganisms
Removing cellular debris and
C)
releasing synthesized substances
Destruction of particles by
D)
lysosomal enzymes for secretion
The process responsible for
7. generating and conducting
membrane potentials is:
A) diffusion of current-carrying ions.
B) millivoltage of electrical potential.
C) polarization of charged particles.
D) ion channel neurotransmission.
Epithelial tissues are classified
according to the shape of the cells
and the number of layers. Which of
8.
the following is a correctly matched
description and type of epithelial
tissue?
Simple epithelium: cells in contact
A) with intercellular matrix; some do
not extend to surface
Stratified epithelium: single layer of
B) cells; all cells rest on basement
membrane
Glandular epithelium: arise from
C) surface epithelia and underlying
connective tissue
D) Pseudostratified epithelium:
multiple layers of cells; deepest
, layer rests on basement membrane
Connective tissue contains
9.
fibroblasts that are responsible for:
providing a fibrous framework for
A)
capillaries.
synthesis of collagen, elastin, and
B)
reticular fibers.
forming tendons and the fascia that
C)
covers muscles.
filling spaces between tissues to
D)
keep organs in place.
Although all muscle tissue cells
have some similarities, smooth
10.
muscle (also known as involuntary
muscle) differs by:
having dense bodies attached to
A)
actin filaments.
containing sarcomeres between Z
B)
lines and M bands.
having rapid contractions and
C)
abundant cross-striations.
contracting in response to increased
D)
intracellular calcium.
Which of the following aspects of
the function of the nucleus is
11.
performed by ribosomal RNA
(rRNA)?
Copying and carrying DNA
A)
instructions for protein synthesis
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