BIO 315 EXAM 3 QUESTIONS AND
ANSWERS
What are housekeeping genes?
a. Genes that are found in people who are very neat.
b. Genes that are specialized for a given cell.
c. Genes that are expressed most of the time and are needed for cell maintenance
(homoeostasis).
d. Genes that are only expressed in times of stress. - Correct Answers -C
Fetal hemoglobin contains which subunits?
a. alpha and beta
b. zeta and alpha
c. gamma and epsilon
d. alpha and gamma
e. zeta and epsilon - Correct Answers -D
Sickle cell anemia is caused by a mutation in which hemoglobin gene?
a. zeta
b. alpha
c. beta
d. gamma
e. epsilon - Correct Answers -C
Doing basic research to understand why certain biological processes occur is
interesting, but rarely provides any clinical significance or applications that benefit
humans.
a. TRUE
b. FALSE - Correct Answers -B
If a scientist wanted to compare the mRNA's found in liver tissue with those found in
brain tissue then she would most accurrately be studying which field?
a. Transcriptomics
b. Genomics
c. Proteomics - Correct Answers -A
, When histones/nucleosomes are attached to a region of DNA what is a good prediction
about the genes in that region?
a. Those genes are likely being expressed
b. Histones/nucleosomes are not linked to gene expression activity.
c. Those genes are likely not being expressed. - Correct Answers -C
Which of the following histone modifications would be linked with reduced gene
expression?
a. phosphorylation
b. methylation
c. acetylation and phosphorylation
d. methylation and acetylation
e. acetylation - Correct Answers -B
The enzyme histone acetylase is most likely invovled in _____.
a. turning on gene expression
b. turning off gene expression - Correct Answers -A
Which of the following is true regarding epigenetics?
a. Epigenetic modifications are unable to be reversed.
b. Epigentic modificaitons are heritable (""remembers"") from one generation to the
next.
c. All of these are true
d. Epigeneic modifications is not linked to the environment.
e. Epigenetics is a type of DNA mutation. - Correct Answers -B
Micro-RNAs are a type of gene regulation that bind to _____ to cause a down regulation
in gene expression.
a. mRNA
b. Protein
e. DNA
d. tRNA
e. Ribosomes - Correct Answers -A
Which of the following is true regarding viruses and their genetic material.
a. Viral DNA in human genomes has no impact on human evolution
b. Viral DNA is never incorporated into human genomes.
c. Viral DNA in human genomes is hypothesized to benefit human fetal development.
d. Viral DNA in human genomes has no impact on human disease.
ANSWERS
What are housekeeping genes?
a. Genes that are found in people who are very neat.
b. Genes that are specialized for a given cell.
c. Genes that are expressed most of the time and are needed for cell maintenance
(homoeostasis).
d. Genes that are only expressed in times of stress. - Correct Answers -C
Fetal hemoglobin contains which subunits?
a. alpha and beta
b. zeta and alpha
c. gamma and epsilon
d. alpha and gamma
e. zeta and epsilon - Correct Answers -D
Sickle cell anemia is caused by a mutation in which hemoglobin gene?
a. zeta
b. alpha
c. beta
d. gamma
e. epsilon - Correct Answers -C
Doing basic research to understand why certain biological processes occur is
interesting, but rarely provides any clinical significance or applications that benefit
humans.
a. TRUE
b. FALSE - Correct Answers -B
If a scientist wanted to compare the mRNA's found in liver tissue with those found in
brain tissue then she would most accurrately be studying which field?
a. Transcriptomics
b. Genomics
c. Proteomics - Correct Answers -A
, When histones/nucleosomes are attached to a region of DNA what is a good prediction
about the genes in that region?
a. Those genes are likely being expressed
b. Histones/nucleosomes are not linked to gene expression activity.
c. Those genes are likely not being expressed. - Correct Answers -C
Which of the following histone modifications would be linked with reduced gene
expression?
a. phosphorylation
b. methylation
c. acetylation and phosphorylation
d. methylation and acetylation
e. acetylation - Correct Answers -B
The enzyme histone acetylase is most likely invovled in _____.
a. turning on gene expression
b. turning off gene expression - Correct Answers -A
Which of the following is true regarding epigenetics?
a. Epigenetic modifications are unable to be reversed.
b. Epigentic modificaitons are heritable (""remembers"") from one generation to the
next.
c. All of these are true
d. Epigeneic modifications is not linked to the environment.
e. Epigenetics is a type of DNA mutation. - Correct Answers -B
Micro-RNAs are a type of gene regulation that bind to _____ to cause a down regulation
in gene expression.
a. mRNA
b. Protein
e. DNA
d. tRNA
e. Ribosomes - Correct Answers -A
Which of the following is true regarding viruses and their genetic material.
a. Viral DNA in human genomes has no impact on human evolution
b. Viral DNA is never incorporated into human genomes.
c. Viral DNA in human genomes is hypothesized to benefit human fetal development.
d. Viral DNA in human genomes has no impact on human disease.
