MICROBIOLOGY CHAPTER 11 TEST BANK.
QUESTIONS AND VERIFIED ANSWERS
2024/2025
A gene is best defined as
A) any random segment of DNA.
B) three nucleotides that code for an amino acid. #(__%_)
_)_^()(*
C) a sequence of nucleotides in DNA that codes for a functional &#%^%
product. $^$%#$
@#!@
D) a sequence of nucleotides in RNA that codes for a functional @!$%%
^#&^*$
product. *((%)()
%()()*^(
E) the RNA product of a transcribed section of DNA. - ANSWER: a )*(*(^(*
sequence of nucleotides in DNA that codes for a functional product. (^*((*(*
^(*()()^
*()*(*(
&*^&*
Which of the following is NOT a product of transcription? &*(^
A) a new strand of DNA
B) rrna
C) trna
D) mrna
E) None of the answers are correct; all of these are products of
transcription - ANSWER: rrna
In Figure 8.1, which colonies are streptomycin-resistant and leucine-
requiring? - ANSWER: 4 and 8
Which of the following pairs is mismatched?
, MICROBIOLOGY CHAPTER 11 TEST BANK.
QUESTIONS AND VERIFIED ANSWERS
2024/2025
A) DNA polymerase — makes a molecule of DNA from a DNA template
B) RNA polymerase — makes a molecule of RNA from an RNA template
C) DNA ligase — joins segments of DNA #(__%_)
_)_^()(*
D) transposase — insertion of DNA segments into DNA &#%^%
$^$%#$
E) DNA gyrase — coils and twists DNA - ANSWER: RNA polymerase - @#!@
makes a molecule of RNA from an RNA template @!$%%
^#&^*$
*((%)()
%()()*^(
Which of the following statements is FALSE? )*(*(^(*
(^*((*(*
A) DNA polymerase joins nucleotides in one direction (5' to 3') only. ^(*()()^
*()*(*(
B) The leading strand of DNA is made continuously. &*^&*
&*(^
C) The lagging strand of DNA is started by an RNA primer.
D) DNA replication proceeds in only one direction around the bacterial
chromosome.
E) Multiple replication forks are possible on a bacterial chromosome. -
ANSWER: DNA replication proceeds in only one direction around the
bacterial chromosome
DNA is constructed of
A) a single strand of nucleotides with internal hydrogen bonding.
B) two complementary strands of nucleotides bonded A—C and G—T.
C) two strands of nucleotides running in an antiparallel configuration.
, MICROBIOLOGY CHAPTER 11 TEST BANK.
QUESTIONS AND VERIFIED ANSWERS
2024/2025
D) two strands of identical nucleotides in a parallel configuration with
hydrogen bonds between them.
E) None of the answers is correct - ANSWER: two strands of
#(__%_)
nucleotides running in an antiparallel configuration _)_^()(*
&#%^%
$^$%#$
@#!@
Which of the following statements about bacteriocins is FALSE? @!$%%
^#&^*$
A) The genes coding for them are on plasmids. *((%)()
%()()*^(
B) They cause food-poisoning symptoms. )*(*(^(*
(^*((*(*
C) Nisin is a bacteriocin used as a food preservative. ^(*()()^
*()*(*(
D) They can be used to identify certain bacteria. &*^&*
&*(^
E) Bacteriocins kill bacteria. - ANSWER: they cause food-poisoning
symptoms
Culture 1: F+, leucine+, histidine+
Culture 2: F-, leucine-, histidine-
8) In Table 8.1, what will be the result of conjugation between cultures
1 and 2 (reminder: F+ has a different meaning than Hfr)?
A) 1 will remain the same;
2 will become F+, leucine-, histidine-
B) 1 will become F-, leu+, his+;
QUESTIONS AND VERIFIED ANSWERS
2024/2025
A gene is best defined as
A) any random segment of DNA.
B) three nucleotides that code for an amino acid. #(__%_)
_)_^()(*
C) a sequence of nucleotides in DNA that codes for a functional &#%^%
product. $^$%#$
@#!@
D) a sequence of nucleotides in RNA that codes for a functional @!$%%
^#&^*$
product. *((%)()
%()()*^(
E) the RNA product of a transcribed section of DNA. - ANSWER: a )*(*(^(*
sequence of nucleotides in DNA that codes for a functional product. (^*((*(*
^(*()()^
*()*(*(
&*^&*
Which of the following is NOT a product of transcription? &*(^
A) a new strand of DNA
B) rrna
C) trna
D) mrna
E) None of the answers are correct; all of these are products of
transcription - ANSWER: rrna
In Figure 8.1, which colonies are streptomycin-resistant and leucine-
requiring? - ANSWER: 4 and 8
Which of the following pairs is mismatched?
, MICROBIOLOGY CHAPTER 11 TEST BANK.
QUESTIONS AND VERIFIED ANSWERS
2024/2025
A) DNA polymerase — makes a molecule of DNA from a DNA template
B) RNA polymerase — makes a molecule of RNA from an RNA template
C) DNA ligase — joins segments of DNA #(__%_)
_)_^()(*
D) transposase — insertion of DNA segments into DNA &#%^%
$^$%#$
E) DNA gyrase — coils and twists DNA - ANSWER: RNA polymerase - @#!@
makes a molecule of RNA from an RNA template @!$%%
^#&^*$
*((%)()
%()()*^(
Which of the following statements is FALSE? )*(*(^(*
(^*((*(*
A) DNA polymerase joins nucleotides in one direction (5' to 3') only. ^(*()()^
*()*(*(
B) The leading strand of DNA is made continuously. &*^&*
&*(^
C) The lagging strand of DNA is started by an RNA primer.
D) DNA replication proceeds in only one direction around the bacterial
chromosome.
E) Multiple replication forks are possible on a bacterial chromosome. -
ANSWER: DNA replication proceeds in only one direction around the
bacterial chromosome
DNA is constructed of
A) a single strand of nucleotides with internal hydrogen bonding.
B) two complementary strands of nucleotides bonded A—C and G—T.
C) two strands of nucleotides running in an antiparallel configuration.
, MICROBIOLOGY CHAPTER 11 TEST BANK.
QUESTIONS AND VERIFIED ANSWERS
2024/2025
D) two strands of identical nucleotides in a parallel configuration with
hydrogen bonds between them.
E) None of the answers is correct - ANSWER: two strands of
#(__%_)
nucleotides running in an antiparallel configuration _)_^()(*
&#%^%
$^$%#$
@#!@
Which of the following statements about bacteriocins is FALSE? @!$%%
^#&^*$
A) The genes coding for them are on plasmids. *((%)()
%()()*^(
B) They cause food-poisoning symptoms. )*(*(^(*
(^*((*(*
C) Nisin is a bacteriocin used as a food preservative. ^(*()()^
*()*(*(
D) They can be used to identify certain bacteria. &*^&*
&*(^
E) Bacteriocins kill bacteria. - ANSWER: they cause food-poisoning
symptoms
Culture 1: F+, leucine+, histidine+
Culture 2: F-, leucine-, histidine-
8) In Table 8.1, what will be the result of conjugation between cultures
1 and 2 (reminder: F+ has a different meaning than Hfr)?
A) 1 will remain the same;
2 will become F+, leucine-, histidine-
B) 1 will become F-, leu+, his+;
