Microbiology Exam
Microbiology Exam 1 Chamberlain -
Predictor Test with 350 Verified Questions
and Correct Answers with Detailed Rationales
Graded A+ / Microbiology Exam Prep Test
Latest
The process of making a new copy of bacterial DNA before division is called ____; the process of
making an RNA copy of a DNA gene is called ____; and, the process of making a protein
according to the mRNA code is called ____.
A. translation; transcription; replication
B. transcription; translation; replication
C. replication; translation; transcription
D. replication; transcription; translation
E. none of the above –
Correct Answer :D. replication; transcription; translation
____ is like an adaptor molecule. It has a specific amino acid on one end that it will carry to the
ribosome, and it has a specific three-nucleotide sequence on the other end called a(n) _____
that will base-pair with mRNA during translation.
A. rRNA; codon
B. rRNA; anticodon
C. tRNA; anticodon
D. tRNA; codon
E. none of the above –
Correct Answer :C. tRNA; anticodon
A+ TEST BANK 1
, Microbiology Exam
Which statement about inducible operons is incorrect?
A. have genes turned off by a buildup of end product
B. are often for catabolic pathways
C. are normally turned off
D. are turned on by the substrate of the enzyme
E. include the lac operon –
Correct Answer :A. have genes turned off by a buildup of end product
During protein synthesis, the mRNA codon, AUG, recruits which of the following tRNA molecules
to the ribosomal complex?
A. tRNA carrying methionine (or formyl-methionine)
B. tRNA carrying proline
C. tRNA carrying arginine
D. No corresponding tRNA exists for this codon. –
Correct Answer :A. tRNA carrying methionine (or formyl-methionine)
The lac operon codes for genes that control
the catabolism of lactose
making lactose
the catabolism of glucose
none of the above
making glucose –
Correct Answer :the catabolism of glucose
A+ TEST BANK 2
, Microbiology Exam
The how would you describe the following DNA mutation: "normal": 3'-AGT CCC GGA TTC-5'
mutated: 3'-AGT CCC GGG ATT C-5'
A. point mutation
B. framestop mutation
C. thymine dimer mutation
D. frameshift mutation
E. none of the above –
Correct Answer :D. frameshift mutation
What kind of DNA mutation does ultraviolet light cause?
A. thymine dimers
B. DNA breaks
C. adenine dimers
D. RNA breaks
E. none of the above –
Correct Answer :A. thymine dimers
A molecule of DNA acquires a point mutation. Which of these is NOT a possible outcome for the
protein for which it codes?
the amino acid coded for changes to a nucleotide sequence (retrosense mutation)
the amino acid coded for now codes for a stop codon (nonsense mutation)
the amino acid coded for changes (missense mutation)
all of the above are possible
the amino acid coded for doesn't change (silent mutation) –
A+ TEST BANK 3
, Microbiology Exam
Correct Answer :the amino acid coded for changes to a nucleotide sequence (retrosense
mutation)
Which of the following types of DNA repair can only be done by prokaryotes (not in eukaryotes)?
photoreactivation repair
nucleotide excision repair
base excision repair
all of these happen in prokaryotes and eukaryotes
mismatch repair –
Correct Answer :photoreactivation repair
The how would you describe the following DNA mutation: "normal": 3'-AGT CCC GGA TTC-5'
mutated: 3'-AGT CCC GGA CTC-5'
frameshift mutation
thymine dimer mutation
framestop mutation
point mutation
None of the above –
Correct Answer :point mutation
_________________ and _________________ are methods of horizontal gene transfer where a
pilus and a virus are essential, respectively.
Conjugation; transduction
Conjugation; transformation
A+ TEST BANK 4
Microbiology Exam 1 Chamberlain -
Predictor Test with 350 Verified Questions
and Correct Answers with Detailed Rationales
Graded A+ / Microbiology Exam Prep Test
Latest
The process of making a new copy of bacterial DNA before division is called ____; the process of
making an RNA copy of a DNA gene is called ____; and, the process of making a protein
according to the mRNA code is called ____.
A. translation; transcription; replication
B. transcription; translation; replication
C. replication; translation; transcription
D. replication; transcription; translation
E. none of the above –
Correct Answer :D. replication; transcription; translation
____ is like an adaptor molecule. It has a specific amino acid on one end that it will carry to the
ribosome, and it has a specific three-nucleotide sequence on the other end called a(n) _____
that will base-pair with mRNA during translation.
A. rRNA; codon
B. rRNA; anticodon
C. tRNA; anticodon
D. tRNA; codon
E. none of the above –
Correct Answer :C. tRNA; anticodon
A+ TEST BANK 1
, Microbiology Exam
Which statement about inducible operons is incorrect?
A. have genes turned off by a buildup of end product
B. are often for catabolic pathways
C. are normally turned off
D. are turned on by the substrate of the enzyme
E. include the lac operon –
Correct Answer :A. have genes turned off by a buildup of end product
During protein synthesis, the mRNA codon, AUG, recruits which of the following tRNA molecules
to the ribosomal complex?
A. tRNA carrying methionine (or formyl-methionine)
B. tRNA carrying proline
C. tRNA carrying arginine
D. No corresponding tRNA exists for this codon. –
Correct Answer :A. tRNA carrying methionine (or formyl-methionine)
The lac operon codes for genes that control
the catabolism of lactose
making lactose
the catabolism of glucose
none of the above
making glucose –
Correct Answer :the catabolism of glucose
A+ TEST BANK 2
, Microbiology Exam
The how would you describe the following DNA mutation: "normal": 3'-AGT CCC GGA TTC-5'
mutated: 3'-AGT CCC GGG ATT C-5'
A. point mutation
B. framestop mutation
C. thymine dimer mutation
D. frameshift mutation
E. none of the above –
Correct Answer :D. frameshift mutation
What kind of DNA mutation does ultraviolet light cause?
A. thymine dimers
B. DNA breaks
C. adenine dimers
D. RNA breaks
E. none of the above –
Correct Answer :A. thymine dimers
A molecule of DNA acquires a point mutation. Which of these is NOT a possible outcome for the
protein for which it codes?
the amino acid coded for changes to a nucleotide sequence (retrosense mutation)
the amino acid coded for now codes for a stop codon (nonsense mutation)
the amino acid coded for changes (missense mutation)
all of the above are possible
the amino acid coded for doesn't change (silent mutation) –
A+ TEST BANK 3
, Microbiology Exam
Correct Answer :the amino acid coded for changes to a nucleotide sequence (retrosense
mutation)
Which of the following types of DNA repair can only be done by prokaryotes (not in eukaryotes)?
photoreactivation repair
nucleotide excision repair
base excision repair
all of these happen in prokaryotes and eukaryotes
mismatch repair –
Correct Answer :photoreactivation repair
The how would you describe the following DNA mutation: "normal": 3'-AGT CCC GGA TTC-5'
mutated: 3'-AGT CCC GGA CTC-5'
frameshift mutation
thymine dimer mutation
framestop mutation
point mutation
None of the above –
Correct Answer :point mutation
_________________ and _________________ are methods of horizontal gene transfer where a
pilus and a virus are essential, respectively.
Conjugation; transduction
Conjugation; transformation
A+ TEST BANK 4
