WorksheetsRDT Unit I
Total questions: 60
Worksheet time: 30mins
Which one is more precise
Gene Cloning
PCR
Bal31 removes nucleotides from both strands of DNA
Y
N
E. coli exonuclease III removes nucleotides from both strands of DNA
Y
N
Main repairing enzyme is
DNA Polymerase I
DNA Polymerase II
DNA Polymerase III
Klenow fragment is obtained from
DNA Polymerase I
DNA Polymerase II
DNA Polymerase III
which activity is not present in klenow fragment
5'-3' Polymerization
5'-3' Exonuclease
3'-5' Exonuclease
Klenow fragment replaces existing nucleotides
Y
N
Alkaline Phosphatase
remove 3' - phosphates
remove 5' - phosphates
remove 3' - OH
remove 5'- OH
Recircularization of vector is prevented by
Termnal deoxynucleotidal transferase
T4 Polynucleotide Kinase
Alkaline Phosphatase
None
Antogonisitc enzyme of alkaline phosphatase is
TdT
Polynucleotide Transferase
Klenow fragment
None
The frequency of 4-base cutter would be less in comparision to 6-base cutter
True
False
Partial restriction digestion can be performed by
lowering the optimum temprature
shortning the incubation time
both
none
Linkers are
blunt ended
sticky ended
Adaptors are
Blunt ended
Sticky ended
The problom with adaptor is that - restriction digestion may cleave the DNA insert
True
False
Blunt ended ligation is performed using
DNA ligase
Alkaline Phosphorylase
DNA topoisomerase
All
Identification of recombinant clones is a two-step procedure in
pBR322
pUC18
pGEM3Z
None
IPTG is chemical analogue of
Lactose
Alolactose
Glucose
Galactose
X-gal is chemical analogue of
Lactose
Alolactose
Glucose
None
bacteria transformed by pUC18 vectors will be
Ampicillin resistant
Tetracyclin resistant
Both
None
nonrecombinant clones of pUC vectors would be
Blue
Red
White
None
which vector allows in vitro transcription of cloned DNA
pBR322
pUC18
pZEM3Z
All
M13 can infact only
F- E. coli cells
F+ E coli cell
true lytic cycle is absent in
Bacteriophage lembda
M13
which is more efficient process for transferring viral DNA into bacterial host ?
Transfaction
Transduction
Which gene was inserted in M13 genome for converting in a cloning vector ?
Ampr
Tetr
LacZ'
None
Phagemid is a hybrid of
pUC and lembda
pUC and M13
pBR322 and M13
None
Maximum cloning capacity of M13-based vector is
3 kb
6 kb
10 kb
None
Maximum cloning capacity of phagemid vector is
3 kb
5 kb
10 kb
20 kb
Lysogeny produces
Clear plaque
Turbid plaque
5'ends of adaptors are dephosphorylated to allow formation of adaptor-adaptor dimer
True
False
The gene that is insertionally inactivated in pUC vector
ampr
tetr
lacz'
None
Helper phages are required for transduction in
Phage lembda
M13-based vector
pEMBL vector
lembda EMBL4 vector
instead of plaque, colonies are formed in
M13-vector
lembda vector
cosmid vector
phagemid vector
in vitro packaging can be used in
phagemid vectors
cosmid vectors
lembda-based vectors
M13-based vectors
problom(s) in using natural phage lembda as cloning vector is/are
large genomic size
absence of unique restriction sites
Both
None
Cloning capacity of lembda insertion vector is
3 kb
8-10 kb
20 kb
40 kb
Cloning capacity of lembda replacment vector is
3 kb
8-10 kb
20 kb
40 kb
Nonessential Segment (NS) in lembda genome contain genes for
capsid particle synthesis
lytic cycle
viral replication
Lysogeny
recominant lembda prodcuces
turbid plaque
clear plaque
vector ZAPII is based on
M13
Phagemid
Cosmid
lembda
which one is a replacement vector
lembda ZAPII
lembda gt11
pEMBL8
lembda EMBL4
lysis repressor gene is utilised in
lembda gt10
lembda ZAPII
lembdaEMBL7
None
pJB8 is a
phagemid vector
cosmid vector
lembda replacement vector
lembda insertion vector
pJB8 has
genes for capsid formation
genes for lysogeny
lembda cos sites
All
cosmid can utilize
in vitro packagening
infection with helper phage
essential components of a chromsome are
centromere
telomeres
origin of replications
All
in YAC, CEN and ori are joined with
SUP4
TRP1
URA3
None
SUP4 gene encode
an mRNA
A tRNA
A rRNA
All
Recombinant YAC produce colonies of which color
Blue
White
Red
None
DNA insert in YAC is cloned within
TRP1
URA3
SUP4
None
Selectable marker in YEp13 is
TRP1
URA3
LEU2
All
Which vector can not maintain as free plasmid in yeast
YEp
YRp
YIp
All
Yeast chromosmal replication origin is utlized in
YEp
YIp
YRp
All
2 mili-micro plasmid origin replication is present in
YEp
YRp
YIp
None
BAC contain origin of replication from
Col plasmid
F plasmid
Replication control in F plasmid is relaxed
True
False
Selectable marker in BAC is
Ampr
Tetr
CMr
None
Signal required for translation of cloned gene in expression vector is
Promoter
Shine Dalgarno Sequence
Transcription Terminator sequence
All
signal peptide at N-terminal of an amino acid sequences make it
cytosolic protein
secretory protein
