A plasmid is an autonomous circular DNA that constitutes a separate replicon.

TLS Online TPP Program

#Id: 6056

#Unit 10. Ecological Principles

Lack of water is the primary factor that determines that an area will be a desert

Hot desert.

Cold desert 

Desert    Location 

Sahara  N. Africa 

Kolahari                      S. Africa 

Coastal Atacama              Peru

Sonoran               North American 

Simpson          Australia 

 

TLS Online TPP Program

#Id: 4634

#Unit 13. Methods in Biology

Colorimetric Assays for Cell Division Are Rapid and Eliminate the Use of Radioactive Isotopes

TLS Online TPP Program

#Id: 7318

#Unit 12. Applied Biology

The bacterium Ralstonia eutropha has been used as a model organism for the commercial production of PHAs.

TLS Online TPP Program

#Id: 2460

#Unit 13. Methods in Biology

During electrophoresis generation of heat is the major problem which leads to

ncreased rate of diffusion of sample and buffer ions.

Thermal instability which include denaturation of proteins.

A decrease of buffer viscosity.

Convection current leads mixing of separated samples

TLS Online TPP Program

#Id: 5375

#Unit 10. Ecological Principles

Mark-recapture technique can have drawbacks;

1. Some animals that have been marked may learn to avoid the traps. 
2. Recapture rates will then be low, resulting in an overestimate of population size.