NU 545 UNIT 7 TEST STUDY QUESTIONS NURSING
COURSE 2026 2027 COURSE COMPLETE MASTER REVIEW
GRADED A+ 100 PERCENT CORRECT VERIFIED STUDY
SET FOR GUARANTEED SUCCESS HIGH-YIELD CONCEPTS
ADVANCED NURSING CLINICAL APPLICATION INSIGHTS
FOR EXCELLENCE
Amniocentesis is recommended for pregnant with what
history? a.
Have a history of chronic illness
b.
Have a family history of genetic disorders
c.
Have experienced in vitro fertilization
d.
Had a late menarche - CORRECT ANSWER - ANS: B
In somatic cell gene therapy, what type of vector is most commonly
used to alter a specific set of an individual's somatic cells? a.
Virus b.
Bacteria
c.
RNA polymerase
d.
Recombinant DNA - CORRECT ANSWER - ANS: A
In somatic cell gene therapy, a vector is used to carry a normal copy of the
mutated gene into the individual's cells. These vectors are usually viruses,
such as retroviruses, lentiviruses, or adenoviruses, which have been
genetically modified so that they contain the normal human gene and
,cannot make copies of themselves (otherwise they could cause a viral
infection). Bacteria, RNA polymerase, and recombinant DNA are not used
as vectors in somatic cell gene therapy.
In DNA replication, what does the enzyme DNA polymerase do?
a.
Travel along the single DNA strand, adding the correct nucleotide to the
new strand b.
Move along the double strand of DNA to unwind the nucleotides of the
double helix c.
Hold the double strand apart while the correct nucleotides are added
to the strand d.
Transport the double strand of DNA from the nucleus to the cytoplasm for
protein formation - CORRECT ANSWER - ANS: A
The DNA polymerase enzyme travels along the single DNA strand, adding
the correct nucleotides to the free end of the new strand (see Figure 4-3, B).
The correct option is the only one that accurately describes the process
involved in DNA replication using DNA polymerase.
How is transcription best defined?
a.
DNA polymerase binds to the promoter site on ribonucleic acid
(RNA). b.
RNA directs the synthesis of polypeptides for protein
synthesis. c.
RNA is synthesized from a DNA template.
d.
A base pair substitution results in a mutation of the amino acid sequence. -
,CORRECT ANSWER - ANS: C
Amniocentesis is recommended only for pregnancies known to have an
elevated risk for a genetic disease or in women older than 30 to 35 years of
age because of the slightly higher risk of fetal loss as compared to the
general population. Having a chronic illness, previous in vitro fertilization,
or late menarche are not reasons to have an amniocentesis.
What is the technique for prenatal diagnosis of chromosomal
abnormalities at 10 to 12 weeks' gestation?
a.
Gene mapping
b.
Linkage analysis
c.
Amniocentesis
d.
Chorionic villus sampling - CORRECT ANSWER - ANS: D
Chorionic villus sampling consists of extracting a small amount of villous
tissue directly from the chorion. This procedure can be performed at 10
weeks' gestation and does not require in vitro culturing of cells; sufficient
numbers are directly available in the extracted tissue. Thus the procedure
allows prenatal diagnosis at approximately 3 months' gestation rather than
at nearly 4 months' gestation which is generally when amniocentesis is
performed. Gene mapping and linkage analysis are not performed
exclusively on women who are 10 weeks' pregnant.
What is the term for an error in which homologous chromosomes fail to
separate during meiosis or mitosis?
a.
Aneuploidy
, b.
Nondisjunction
c.
Polyploidy
d.
Translocation - CORRECT ANSWER - ANS: B
Aneuploidy is usually the result of nondisjunction, an error in which
homologous chromosomes or sister chromatids fail to separate normally
during meiosis or mitosis. Aneuploidy refers to cells that do not contain a
multiple of 23 chromosomes. Polyploidy is when a cell has more than the
diploid number of
chromosomes, it is said to be a polyploid cell. Translocation refers the
interchanging of genetic material between nonhomologous chromosomes.
A healthcare professional is assessing a child who has complete trisomy of
the twenty-first chromosome. What findings does the professional relate to
this condition?
a.
Widely spaced nipples, reduced carrying angle at the elbow, and sparse
body hair b.
An IQ of 25 to 70, low nasal bridge, protruding tongue, and flat, low-set
ears c.
High-pitched voice, tall stature, gynecomastia, and an IQ of 60 to
90 d.
Circumoral cyanosis, edema of the feet, short stature, and mental
slowness -
CORRECT ANSWER - ANS: B
This child has Trisomy 21, also known as Down syndrome. These children
typically present with IQs ranging from 25 to 70. The facial appearance is
distinctive and exhibits a low nasal bridge, epicanthal folds, protruding
COURSE 2026 2027 COURSE COMPLETE MASTER REVIEW
GRADED A+ 100 PERCENT CORRECT VERIFIED STUDY
SET FOR GUARANTEED SUCCESS HIGH-YIELD CONCEPTS
ADVANCED NURSING CLINICAL APPLICATION INSIGHTS
FOR EXCELLENCE
Amniocentesis is recommended for pregnant with what
history? a.
Have a history of chronic illness
b.
Have a family history of genetic disorders
c.
Have experienced in vitro fertilization
d.
Had a late menarche - CORRECT ANSWER - ANS: B
In somatic cell gene therapy, what type of vector is most commonly
used to alter a specific set of an individual's somatic cells? a.
Virus b.
Bacteria
c.
RNA polymerase
d.
Recombinant DNA - CORRECT ANSWER - ANS: A
In somatic cell gene therapy, a vector is used to carry a normal copy of the
mutated gene into the individual's cells. These vectors are usually viruses,
such as retroviruses, lentiviruses, or adenoviruses, which have been
genetically modified so that they contain the normal human gene and
,cannot make copies of themselves (otherwise they could cause a viral
infection). Bacteria, RNA polymerase, and recombinant DNA are not used
as vectors in somatic cell gene therapy.
In DNA replication, what does the enzyme DNA polymerase do?
a.
Travel along the single DNA strand, adding the correct nucleotide to the
new strand b.
Move along the double strand of DNA to unwind the nucleotides of the
double helix c.
Hold the double strand apart while the correct nucleotides are added
to the strand d.
Transport the double strand of DNA from the nucleus to the cytoplasm for
protein formation - CORRECT ANSWER - ANS: A
The DNA polymerase enzyme travels along the single DNA strand, adding
the correct nucleotides to the free end of the new strand (see Figure 4-3, B).
The correct option is the only one that accurately describes the process
involved in DNA replication using DNA polymerase.
How is transcription best defined?
a.
DNA polymerase binds to the promoter site on ribonucleic acid
(RNA). b.
RNA directs the synthesis of polypeptides for protein
synthesis. c.
RNA is synthesized from a DNA template.
d.
A base pair substitution results in a mutation of the amino acid sequence. -
,CORRECT ANSWER - ANS: C
Amniocentesis is recommended only for pregnancies known to have an
elevated risk for a genetic disease or in women older than 30 to 35 years of
age because of the slightly higher risk of fetal loss as compared to the
general population. Having a chronic illness, previous in vitro fertilization,
or late menarche are not reasons to have an amniocentesis.
What is the technique for prenatal diagnosis of chromosomal
abnormalities at 10 to 12 weeks' gestation?
a.
Gene mapping
b.
Linkage analysis
c.
Amniocentesis
d.
Chorionic villus sampling - CORRECT ANSWER - ANS: D
Chorionic villus sampling consists of extracting a small amount of villous
tissue directly from the chorion. This procedure can be performed at 10
weeks' gestation and does not require in vitro culturing of cells; sufficient
numbers are directly available in the extracted tissue. Thus the procedure
allows prenatal diagnosis at approximately 3 months' gestation rather than
at nearly 4 months' gestation which is generally when amniocentesis is
performed. Gene mapping and linkage analysis are not performed
exclusively on women who are 10 weeks' pregnant.
What is the term for an error in which homologous chromosomes fail to
separate during meiosis or mitosis?
a.
Aneuploidy
, b.
Nondisjunction
c.
Polyploidy
d.
Translocation - CORRECT ANSWER - ANS: B
Aneuploidy is usually the result of nondisjunction, an error in which
homologous chromosomes or sister chromatids fail to separate normally
during meiosis or mitosis. Aneuploidy refers to cells that do not contain a
multiple of 23 chromosomes. Polyploidy is when a cell has more than the
diploid number of
chromosomes, it is said to be a polyploid cell. Translocation refers the
interchanging of genetic material between nonhomologous chromosomes.
A healthcare professional is assessing a child who has complete trisomy of
the twenty-first chromosome. What findings does the professional relate to
this condition?
a.
Widely spaced nipples, reduced carrying angle at the elbow, and sparse
body hair b.
An IQ of 25 to 70, low nasal bridge, protruding tongue, and flat, low-set
ears c.
High-pitched voice, tall stature, gynecomastia, and an IQ of 60 to
90 d.
Circumoral cyanosis, edema of the feet, short stature, and mental
slowness -
CORRECT ANSWER - ANS: B
This child has Trisomy 21, also known as Down syndrome. These children
typically present with IQs ranging from 25 to 70. The facial appearance is
distinctive and exhibits a low nasal bridge, epicanthal folds, protruding
