Activation of resting B-cells by T-helper cells depends directly upon costimulatory interaction between:

TLS Online TPP Program

#Question id: 19790

#Unit 13. Methods in Biology

What will be the major difference between the PCR and replication is?

TLS Online TPP Program

#Question id: 19791

#Unit 13. Methods in Biology

Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.

TLS Online TPP Program

#Question id: 19840

#Unit 13. Methods in Biology

Match the following source of thermostable DNA polymerase with proofreading (3’−5’ exonuclease) activity;

DNA Polymerase	Sources
A- Tma	i) Pyrococcus furiosus
B- Deep VentTM	ii) Pyrococcus woesi
C- Tli	iii)  Thermotoga maritima
D- Pfu	iv) Pyrococcus sp.
E- Pwo	v) Thermococcus litoralis

TLS Online TPP Program

#Question id: 19841

#Unit 13. Methods in Biology

Which of the following is true regarding Reverse transcriptase ?

TLS Online TPP Program

#Question id: 19842

#Unit 13. Methods in Biology

Primer-Dimer leads to the formation of ___

a) Inter-complemetary primers

b) Hybrid 

c) Amplicons

TLS Online TPP Program

#Question id: 19843

#Unit 13. Methods in Biology

Real time PCR analyzed various steps such as__

a) Denaturation

b) Annealing

c) Phosphorylation

d) Amplification

e) Methylation

f) Extension

Which of the following steps are correctly analyzed by real time PCR?