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RDT Unit I

Total questions: 60

Worksheet time: 30mins

Name
Class
Date
1.

Which one is more precise

a)

Gene Cloning

b)

PCR

2.

Bal31 removes nucleotides from both strands of DNA

a)

Y

b)

N

3.

E. coli exonuclease III removes nucleotides from both strands of DNA

a)

Y

b)

N

4.

Main repairing enzyme is

a)

DNA Polymerase I

b)

DNA Polymerase II

c)

DNA Polymerase III

5.

Klenow fragment is obtained from

a)

DNA Polymerase I

b)

DNA Polymerase II

c)

DNA Polymerase III

6.

which activity is not present in klenow fragment

a)

5'-3' Polymerization

b)

5'-3' Exonuclease

c)

3'-5' Exonuclease

7.

Klenow fragment replaces existing nucleotides

a)

Y

b)

N

8.

Alkaline Phosphatase

a)

remove 3' - phosphates

b)

remove 5' - phosphates

c)

remove 3' - OH

d)

remove 5'- OH

9.

Recircularization of vector is prevented by

a)

Termnal deoxynucleotidal transferase

b)

T4 Polynucleotide Kinase

c)

Alkaline Phosphatase

d)

None

10.

Antogonisitc enzyme of alkaline phosphatase is

a)

TdT

b)

Polynucleotide Transferase

c)

Klenow fragment

d)

None

11.

The frequency of 4-base cutter would be less in comparision to 6-base cutter

a)

True

b)

False

12.

Partial restriction digestion can be performed by

a)

lowering the optimum temprature

b)

shortning the incubation time

c)

both

d)

none

13.

Linkers are

a)

blunt ended

b)

sticky ended

14.

Adaptors are

a)

Blunt ended

b)

Sticky ended

15.

The problom with adaptor is that - restriction digestion may cleave the DNA insert

a)

True

b)

False

16.

Blunt ended ligation is performed using

a)

DNA ligase

b)

Alkaline Phosphorylase

c)

DNA topoisomerase

d)

All

17.

Identification of recombinant clones is a two-step procedure in

a)

pBR322

b)

pUC18

c)

pGEM3Z

d)

None

18.

IPTG is chemical analogue of

a)

Lactose

b)

Alolactose

c)

Glucose

d)

Galactose

19.

X-gal is chemical analogue of

a)

Lactose

b)

Alolactose

c)

Glucose

d)

None

20.

bacteria transformed by pUC18 vectors will be

a)

Ampicillin resistant

b)

Tetracyclin resistant

c)

Both

d)

None

21.

nonrecombinant clones of pUC vectors would be

a)

Blue

b)

Red

c)

White

d)

None

22.

which vector allows in vitro transcription of cloned DNA

a)

pBR322

b)

pUC18

c)

pZEM3Z

d)

All

23.

M13 can infact only

a)

F- E. coli cells

b)

F+ E coli cell

24.

true lytic cycle is absent in

a)

Bacteriophage lembda

b)

M13

25.

which is more efficient process for transferring viral DNA into bacterial host ?

a)

Transfaction

b)

Transduction

26.

Which gene was inserted in M13 genome for converting in a cloning vector ?

a)

Ampr

b)

Tetr

c)

LacZ'

d)

None

27.

Phagemid is a hybrid of

a)

pUC and lembda

b)

pUC and M13

c)

pBR322 and M13

d)

None

28.

Maximum cloning capacity of M13-based vector is

a)

3 kb

b)

6 kb

c)

10 kb

d)

None

29.

Maximum cloning capacity of phagemid vector is

a)

3 kb

b)

5 kb

c)

10 kb

d)

20 kb

30.

Lysogeny produces

a)

Clear plaque

b)

Turbid plaque

31.

5'ends of adaptors are dephosphorylated to allow formation of adaptor-adaptor dimer

a)

True

b)

False

32.

The gene that is insertionally inactivated in pUC vector

a)

ampr

b)

tetr

c)

lacz'

d)

None

33.

Helper phages are required for transduction in

a)

Phage lembda

b)

M13-based vector

c)

pEMBL vector

d)

lembda EMBL4 vector

34.

instead of plaque, colonies are formed in

a)

M13-vector

b)

lembda vector

c)

cosmid vector

d)

phagemid vector

35.

in vitro packaging can be used in

a)

phagemid vectors

b)

cosmid vectors

c)

lembda-based vectors

d)

M13-based vectors

36.

problom(s) in using natural phage lembda as cloning vector is/are

a)

large genomic size

b)

absence of unique restriction sites

c)

Both

d)

None

37.

Cloning capacity of lembda insertion vector is

a)

3 kb

b)

8-10 kb

c)

20 kb

d)

40 kb

38.

Cloning capacity of lembda replacment vector is

a)

3 kb

b)

8-10 kb

c)

20 kb

d)

40 kb

39.

Nonessential Segment (NS) in lembda genome contain genes for

a)

capsid particle synthesis

b)

lytic cycle

c)

viral replication

d)

Lysogeny

40.

recominant lembda prodcuces

a)

turbid plaque

b)

clear plaque

41.

vector ZAPII is based on

a)

M13

b)

Phagemid

c)

Cosmid

d)

lembda

42.

which one is a replacement vector

a)

lembda ZAPII

b)

lembda gt11

c)

pEMBL8

d)

lembda EMBL4

43.

lysis repressor gene is utilised in

a)

lembda gt10

b)

lembda ZAPII

c)

lembdaEMBL7

d)

None

44.

pJB8 is a

a)

phagemid vector

b)

cosmid vector

c)

lembda replacement vector

d)

lembda insertion vector

45.

pJB8 has

a)

genes for capsid formation

b)

genes for lysogeny

c)

lembda cos sites

d)

All

46.

cosmid can utilize

a)

in vitro packagening

b)

infection with helper phage

47.

essential components of a chromsome are

a)

centromere

b)

telomeres

c)

origin of replications

d)

All

48.

in YAC, CEN and ori are joined with

a)

SUP4

b)

TRP1

c)

URA3

d)

None

49.

SUP4 gene encode

a)

an mRNA

b)

A tRNA

c)

A rRNA

d)

All

50.

Recombinant YAC produce colonies of which color

a)

Blue

b)

White

c)

Red

d)

None

51.

DNA insert in YAC is cloned within

a)

TRP1

b)

URA3

c)

SUP4

d)

None

52.

Selectable marker in YEp13 is

a)

TRP1

b)

URA3

c)

LEU2

d)

All

53.

Which vector can not maintain as free plasmid in yeast

a)

YEp

b)

YRp

c)

YIp

d)

All

54.

Yeast chromosmal replication origin is utlized in

a)

YEp

b)

YIp

c)

YRp

d)

All

55.

2 mili-micro plasmid origin replication is present in

a)

YEp

b)

YRp

c)

YIp

d)

None

56.

BAC contain origin of replication from

a)

Col plasmid

b)

F plasmid

57.

Replication control in F plasmid is relaxed

a)

True

b)

False

58.

Selectable marker in BAC is

a)

Ampr

b)

Tetr

c)

CMr

d)

None

59.

Signal required for translation of cloned gene in expression vector is

a)

Promoter

b)

Shine Dalgarno Sequence

c)

Transcription Terminator sequence

d)

All

60.

signal peptide at N-terminal of an amino acid sequences make it

a)

cytosolic protein

b)

secretory protein