Which of the following statements is correct regarding the stereochemistry of Thr, Ile 

1. Thr, Ile is special case because of two chiral center exist in L-Ile in 2R,3S and L-Thr in 2R,3S configuration 

2. Thr, Ile is special case because of two chiral center exist in D-Ile in 2R,3S and D-Thr in 2R,3S configuration 

3. Thr, Ile is special case because of two chiral center exist in L–Ile in 2S,3R and L–Thr in 2S,3R 

4. Thr, Ile is special case because of two chiral center exist in D–Ile in 2S,3R and D–Thr in 2S,3R

TLS Online TPP Program

#Question id: 19829

#Unit 12. Applied Biology

At the site of infection in plants accumulation of which compounds leads to host cell death

TLS Online TPP Program

#Question id: 19830

#Unit 12. Applied Biology

The expression of avr gene must be precisely regulated: it must be expressed immediately following pathogen attack but only in

TLS Online TPP Program

#Question id: 19831

#Unit 12. Applied Biology

Expression of the avr gene would produce the elicitor that would be recognized by the corresponding R gene product; this recognition will initiate and culminate in

TLS Online TPP Program

#Question id: 19832

#Unit 12. Applied Biology

The single component system is based on the expression of a toxic polypeptide in response to

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 ?