MICRO BIOLOGY TEST BANK FINAL EXAM
2024, 200 QUESTIONS WITH CORRECT
ANSWERS GRADE A+|NEWEST UPDATE!!
Genomes are considered to be mosaic. Which of the following statements provides the LEAST support
for this idea?
a.
E. coli can receive plasmids from other strains of Gram-negative bacteria.
b.
The archaeon Methanocaldococcus jannaschii has many proteins with sequence homology to proteins
found in both bacteria and Eukarya.
c.
Agrobacterium can transfer plasmids to plants.
d.
Genome sequencing and informatics has revealed a variety of homologous genes throughout the
domains of life.
e.
Genes from Mesorhizobium loti have been found in other new species of
Mesorhizobium. - ANSWERS -A. E. coli can receive plasmids from other strains
of Gram-negative bacteria.
Competence in Gram-positive organisms is induced by:
a.
calcium and cold
b.
electrical currents
c.
,competence factors made of peptides
d.
presence of biofilm
e.
competence is not induced in Gram-positive bacteria - ANSWERS -c.
competence factors made of peptides
The process of importing free DNA into cells is known as:
a.
transposition
d.
generalized transduction
b.
conjugation
e.
transformation
c.
specialized transduction - ANSWERS -e. transformation
Which of the following bacteria requires artificial assistance to become competent to take up DNA?
a.
Bacillus
d.
Neisseria
b.
E. coli
e.
Streptococcus
,c.
Haemophilus - ANSWERS -b. E.coli
In order to transfer, an F factor must have which of the following?
a.
oriV and its own DNA polymerase
b.
oriV and tra genes
c.
oriT and tra genes
d.
oriT and its own DNA polymerase
e.
oriT, tra genes, and its own DNA polymerase - ANSWERS -oriT and tra genes
6. F factor contains how many origins of replication?
a.
one
d.
four
b.
two
e.
none
c.
three - ANSWERS -two
7. During conjugation, __________ is used for replication beginning at __________.
, DNA pol I; oriV
d.
DNA pol II; oriT
b.
DNA pol III; oriV
e.
DNA pol III; oriT
c.
DNA pol I; oriT - ANSWERS -DNA pol III; oriT
8. The recipient of Hfr conjugation __________ becomes an F+ or Hfr cell.
a.
never
d.
usually
b.
rarely
e.
never
c.
frequently - ANSWERS -rarely
9. Interrupted mating involves breaking __________ bridges using a blender.
a.
transformation
d.
transposition
b.
2024, 200 QUESTIONS WITH CORRECT
ANSWERS GRADE A+|NEWEST UPDATE!!
Genomes are considered to be mosaic. Which of the following statements provides the LEAST support
for this idea?
a.
E. coli can receive plasmids from other strains of Gram-negative bacteria.
b.
The archaeon Methanocaldococcus jannaschii has many proteins with sequence homology to proteins
found in both bacteria and Eukarya.
c.
Agrobacterium can transfer plasmids to plants.
d.
Genome sequencing and informatics has revealed a variety of homologous genes throughout the
domains of life.
e.
Genes from Mesorhizobium loti have been found in other new species of
Mesorhizobium. - ANSWERS -A. E. coli can receive plasmids from other strains
of Gram-negative bacteria.
Competence in Gram-positive organisms is induced by:
a.
calcium and cold
b.
electrical currents
c.
,competence factors made of peptides
d.
presence of biofilm
e.
competence is not induced in Gram-positive bacteria - ANSWERS -c.
competence factors made of peptides
The process of importing free DNA into cells is known as:
a.
transposition
d.
generalized transduction
b.
conjugation
e.
transformation
c.
specialized transduction - ANSWERS -e. transformation
Which of the following bacteria requires artificial assistance to become competent to take up DNA?
a.
Bacillus
d.
Neisseria
b.
E. coli
e.
Streptococcus
,c.
Haemophilus - ANSWERS -b. E.coli
In order to transfer, an F factor must have which of the following?
a.
oriV and its own DNA polymerase
b.
oriV and tra genes
c.
oriT and tra genes
d.
oriT and its own DNA polymerase
e.
oriT, tra genes, and its own DNA polymerase - ANSWERS -oriT and tra genes
6. F factor contains how many origins of replication?
a.
one
d.
four
b.
two
e.
none
c.
three - ANSWERS -two
7. During conjugation, __________ is used for replication beginning at __________.
, DNA pol I; oriV
d.
DNA pol II; oriT
b.
DNA pol III; oriV
e.
DNA pol III; oriT
c.
DNA pol I; oriT - ANSWERS -DNA pol III; oriT
8. The recipient of Hfr conjugation __________ becomes an F+ or Hfr cell.
a.
never
d.
usually
b.
rarely
e.
never
c.
frequently - ANSWERS -rarely
9. Interrupted mating involves breaking __________ bridges using a blender.
a.
transformation
d.
transposition
b.
