The core zone is fully protected and natural area of the Biosphere Reserve least disturbed by human activities. The buffer zone surrounds the core zone and is managed to accommodate a greater variety of resource use strategies, and research and educational activities. the transition zone, the outermost part of the Biosphere Reserve, is an area of active cooperation between the reserve management and the local people. 

Till date there were 553 biosphere reserves located in 107 countries.

TLS Online TPP Program

#Id: 1826

#Unit 10. Ecological Principles

dN/dt has its maximum at an intermediate population Size specifically, at N = K/2.

Maximum sustainable yield = rK/2

TLS Online TPP Program

#Id: 4666

#Unit 13. Methods in Biology

The total concentration of antibody in the equilibrium dialysis chamber is known, the equilibrium equation can be rewritten as:

TLS Online TPP Program

#Id: 4673

#Unit 13. Methods in Biology

A related quantitative technique, rocket electrophoresis, does permit measurement of antigen levels. In rocket electrophoresis, a negatively charged antigen is electrophoresed in a gel containing antibody. The precipitate formed between antigen and antibody has the shape of a rocket, the height of which is proportional to the concentration of antigen in the well. 

TLS Online TPP Program

#Id: 2537

#Unit 13. Methods in Biology

Extension step in the second cycle will produce a product that will be much shorter than the 'long product'; this is the 'correct' PCR product and represents the target sequence

TLS Online TPP Program

#Id: 7518

#Unit 6. System Physiology – Plant

Auxin influx 

Auxin can enter plant cells from any direction by either of two mechanisms:

Passive diffusion of the protonated (IAAH) form across the phospholipid bilayer

Secondary active transport of the dissociated (IAA–) form via a 2H+–IAA– symporter

The dual pathway of auxin uptake arises because the passive permeability of the membrane to auxin depends strongly on the apoplastic pH.