Association with ARF6 activates A1, which catalyzes the transfer of ADP-ribose from NAD to the critical Arg residue in the P loop of the  subunit of Gαs. 

TLS Online TPP Program

#Id: 7319

#Unit 12. Applied Biology

Phytoremediation

TLS Online TPP Program

#Id: 7320

#Unit 12. Applied Biology

Phytoremediation is the use of green plants and their associated microorganisms, soil ammendments, and agronomic practices to remove, harmfull environmental contaminants.

TLS Online TPP Program

#Id: 7321

#Unit 12. Applied Biology

Phytovolatilization

Plants remove inorganic contaminants· either by contaminant volatilization or by metal accumulation.

Volatalization is useful for the removal of mercury. A bacterial mercuric ion reductase has been transferred to Arabidopsis thaliana; this transgenic plant absorbs mercury, and reduces it to volatile Hg0, which volatilizes from the leaf surface.

TLS Online TPP Program

#Id: 7322

#Unit 12. Applied Biology

Rhizofiltration is a process that filters water through a mass of roots to remove toxic substances or excess nutrients. The pollutants remain absorbed in or adsorbed on to the roots. As the roots become saturated with contaminants, they are harvested and disposed. 

TLS Online TPP Program

#Id: 7323

#Unit 12. Applied Biology

Phytodegradation works best with organic contaminants like herbicides, trichloroethylene, and methyl tert-butyl ether (MTBE – a volatile substance). 

TLS Online TPP Program

#Id: 860

#Unit 13. Methods in Biology

The PCR consists of three defined sets of times and temperatures, termed steps

a) Denaturation at 94°C, for 0.5 min

b) Primer annealing at 55°C for 1.5 min

c) Extension at 72°C for 1 min