UNE BIOL 1020 Exam Questions and
Answers Latest Version Top-rated
Question>>1
The size of the amplified DNA fragment generated during PCR is
determined by
Answer>>
the locations to which the primers anneal.
Question>>22
Carries viral genes from bacterial chromosomes
Answer>>
Transduction
Question>>3
Phages that can either replicate and cause cell lysis or can integrate their
DNA into the host DNA are called
Answer>>
temperate phages.
Question>>4
Multiple enzymes may repair an A-C error left unrecognized by DNA
polymerase
Answer>>
Mismatch repair
Question>>5
Strain differences are helpful in
Answer>>
tracing the source of outbreaks of disease.
Question>>6
Movement of spirochetes occurs by means of structures called
Answer>>
,axial filaments.
Question>>7
PCR is particularly useful in
Answer>>
- assessing impure (multiple types of bacteria present) samples.- relatively
quickly producing results.- detecting viable yet non-culturable organisms.-
dealing with very small numbers of bacteria.-> All of the answer choices
are correct.
Question>>8
Follows the lytic cycle of a bacteriophage
Answer>>
Transduction
Question>>9
An ideal vector
Answer>>
A. may be a plasmid or bacteriophage.
B. has multiple restriction enzyme recognition sites.
C. contains an origin of replication.
D. contains a selectable marker.
-> E. All of the choices are correct.
Question>>10 Phenotype Answer>>
Colonies on agar have a purple color
Question>>11
The agarose used in electrophoresis
Answer>>
acts as a sieve.
Question>>12
Why is it a good idea for a bacterial cell to be able to utilize glucose FIRST
as an energy source (until it is used up), THEN switch to lactose?
,Answer>>
Glucose is an easier compound to break down and obtain energy from
than lactose AND it's about conservation of energy-why expend the
energy to make the extra enzymes for breaking down lactose when
glucose is right there and doesn't need extra enzymes for breakdown
Question>>13 Anoxygenic phototrophs Answer>>
use hydrogen sulfide or organic compounds as a source of electrons.
Question>>14
In order to get around the lack of ability of prokaryotes to remove introns
from precursor RNA, it may be necessary to
Answer>>
turn mRNA into cDNA.
Question>>15
Thymine dimers are dealt with by
Answer>>
Photoreactivation repair AND excision repair
Question>>16
If the G+C content of two organisms is 45% in both
Answer>>
they may or may not be related.
Question>>17
Serological methods
Answer>>
A. are useful in identifying unknown bacteria.
B. rely on the specificity of an antibody-antigen interaction.
C. may be simple and rapid.
D. use cellular proteins and carbohydrates as markers.
-> E. All choices are correct.
, Question>>18
To increase the proportion of mutants in a population of bacteria one may
use
Answer>>
penicillin enrichment.
Question>>19
The viral envelope resembles the
Answer>>
eukaryotic cell membrane.
Question>>20
The specific sequence of nucleotides in the DNA to which the RNA
polymerase binds is the
Answer>>
promoter region.
Question>>21
A common vector used for cloning genes is/are
Answer>>
plasmids
Question>>22 Sigma factor Answer>> Transcription
Question>>23
Viruses acquire envelopes around their nucleocapsids during
Answer>>
release.
Question>>24 Auxotroph Answer>>
Requires histidine amino acid addition to the medium for growth
Question>>25
Catastrophic DNA damage caused by ultraviolet light can be survived by
Answers Latest Version Top-rated
Question>>1
The size of the amplified DNA fragment generated during PCR is
determined by
Answer>>
the locations to which the primers anneal.
Question>>22
Carries viral genes from bacterial chromosomes
Answer>>
Transduction
Question>>3
Phages that can either replicate and cause cell lysis or can integrate their
DNA into the host DNA are called
Answer>>
temperate phages.
Question>>4
Multiple enzymes may repair an A-C error left unrecognized by DNA
polymerase
Answer>>
Mismatch repair
Question>>5
Strain differences are helpful in
Answer>>
tracing the source of outbreaks of disease.
Question>>6
Movement of spirochetes occurs by means of structures called
Answer>>
,axial filaments.
Question>>7
PCR is particularly useful in
Answer>>
- assessing impure (multiple types of bacteria present) samples.- relatively
quickly producing results.- detecting viable yet non-culturable organisms.-
dealing with very small numbers of bacteria.-> All of the answer choices
are correct.
Question>>8
Follows the lytic cycle of a bacteriophage
Answer>>
Transduction
Question>>9
An ideal vector
Answer>>
A. may be a plasmid or bacteriophage.
B. has multiple restriction enzyme recognition sites.
C. contains an origin of replication.
D. contains a selectable marker.
-> E. All of the choices are correct.
Question>>10 Phenotype Answer>>
Colonies on agar have a purple color
Question>>11
The agarose used in electrophoresis
Answer>>
acts as a sieve.
Question>>12
Why is it a good idea for a bacterial cell to be able to utilize glucose FIRST
as an energy source (until it is used up), THEN switch to lactose?
,Answer>>
Glucose is an easier compound to break down and obtain energy from
than lactose AND it's about conservation of energy-why expend the
energy to make the extra enzymes for breaking down lactose when
glucose is right there and doesn't need extra enzymes for breakdown
Question>>13 Anoxygenic phototrophs Answer>>
use hydrogen sulfide or organic compounds as a source of electrons.
Question>>14
In order to get around the lack of ability of prokaryotes to remove introns
from precursor RNA, it may be necessary to
Answer>>
turn mRNA into cDNA.
Question>>15
Thymine dimers are dealt with by
Answer>>
Photoreactivation repair AND excision repair
Question>>16
If the G+C content of two organisms is 45% in both
Answer>>
they may or may not be related.
Question>>17
Serological methods
Answer>>
A. are useful in identifying unknown bacteria.
B. rely on the specificity of an antibody-antigen interaction.
C. may be simple and rapid.
D. use cellular proteins and carbohydrates as markers.
-> E. All choices are correct.
, Question>>18
To increase the proportion of mutants in a population of bacteria one may
use
Answer>>
penicillin enrichment.
Question>>19
The viral envelope resembles the
Answer>>
eukaryotic cell membrane.
Question>>20
The specific sequence of nucleotides in the DNA to which the RNA
polymerase binds is the
Answer>>
promoter region.
Question>>21
A common vector used for cloning genes is/are
Answer>>
plasmids
Question>>22 Sigma factor Answer>> Transcription
Question>>23
Viruses acquire envelopes around their nucleocapsids during
Answer>>
release.
Question>>24 Auxotroph Answer>>
Requires histidine amino acid addition to the medium for growth
Question>>25
Catastrophic DNA damage caused by ultraviolet light can be survived by
