MICROBIOLOGY ELABORATED
QUESTIONS AND ANSWERS
B - CORRECT ANSWER-The enzyme that is responsible for
synthesizing RNA is
a. DNA phosphorylase.
b. Transcriptase.
c. DNA ligase.
d. RNA ligase.
e. DNA synthase.
D - CORRECT ANSWER-DNA DIRECTLY participates in which
of the following?
a. Rep...
B - CORRECT ANSWER-The enzyme that is responsible for
synthesizing RNA is
a. DNA phosphorylase.
b. Transcriptase.
c. DNA ligase.
d. RNA ligase.
e. DNA synthase.
D - CORRECT ANSWER-DNA DIRECTLY participates in which
of the following?
a. Replication, transcription and translation
b. Conservative replication
c. Transcription and translation
d. Replication and transcription
e. None of the above.
B - CORRECT ANSWER-Genetics and metabolism are tied
together by the fact that
a. The genes code for phenotypic characteristics that result in
proteins being produced.
b. The genes code for enzymes that catalyze reactions that
result in characteristics.
,c. The proteins code for genes that result in enzymes that
catalyze reactions.
d. The enzymes catalyze reactions that produce proteins.
e. None of the above.
D - CORRECT ANSWER-All of the following bases are found in
RNA except
a. Adenine.
b. Cytosine.
c. Guanine.
d. Thymine.
e. Uracil.
A - CORRECT ANSWER-A silent mutation is
a. Always a change in base sequence and sometimes a
change in amino acid sequence.
b. Always a change in base sequence and always a change in
amino acid sequence.
c. Sometimes a change in base sequence and always a
change in amino acid sequence.
d. Sometimes a change in base sequence and sometimes a
change in amino acid sequence.
e. None of the above.
B - CORRECT ANSWER-The codon, UGA, would function as a
stop codon on
a. tRNA.
b. mRNA.
c. rRNA.
d. All of the above.
e. None of the above.
D - CORRECT ANSWER-Which would be a product of
translation?
a. A new strand of DNA
b. rRNA
c. tRNA
,d. A protein (polypeptide).
e. None of the above.
A - CORRECT ANSWER-Which require(s) living donor and
recipient cells?
a. Conjugation only
b. Conjugation and transformation
c. Transformation only
d. Conjugation and transduction
e. Transduction only
D - CORRECT ANSWER-Erectile dysfunction can be caused
by
a. Carboxide.
b. Ultraviolet light.
c. Caffeine.
d. Cigarette smoke.
e. All of the above.
B - CORRECT ANSWER-The following use(s) sex pheromones
a. Gram negative conjugation
b. Gram positive conjugation
c. Gram negative and Gram positive conjugation
d. Transformation
e. Transduction
B - CORRECT ANSWER-Which of the following is due to a
mistake in packaging of DNA?
a. Transformation
b. Transduction
c. Conjugation
d. Translation
e. None of the above
B - CORRECT ANSWER-Chemicals in cigarette smoke that
selectively cause cells with a mutation to replicate more than
cells without a mutation are called
, a. Initiators.
b. Promoters.
c. Inducers.
d. Inhibitors.
e. None of the above.
B - CORRECT ANSWER-Restriction enzymes are important
because they
a. Function in protein synthesis.
b. Generate overlapping sticky ends on DNA.
c. Cause cells to become competent for transformation.
d. Are responsible for conjugation.
e. None of the above.
B - CORRECT ANSWER-A method of one-way gene transfer
that requires cell-to-cell contact is
a. Transformation.
b. Conjugation.
c. Transduction.
d. Transcription.
e. Translation.
C - CORRECT ANSWER-Which are not Methods of
Sterilization?
a. Autoclave and oven
b. Oven and filtration
c. Pasteurization and lyophilization
d. Filtration and incineration
e. Incineration and oven
B - CORRECT ANSWER-Endospores have resistance to some
levels of ionizing radiation because they are
a. Lyophilized.
b. Desiccated.
c. Heat-resistant.
d. Resistant to freezing.
e. All of the above.
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