TLS Online TPP Program

#Id: 2255

#Unit 11. Evolution and Behavior

There are three basic modes of selection on a quantitative trait.

TLS Online TPP Program

#Id: 5207

#Unit 7. System Physiology – Animal

Antithrombin III is a circulating protease inhibitor that binds to serine proteases in the coagulation system, blocking their activity as clotting factors.

TLS Online TPP Program

#Id: 8534

#Unit 2. Cellular Organization

γ-tubulin ring complex (γ-TuRC)

nucleates assembly of a microtubule by forming a template corresponding to the (−) end. 

TLS Online TPP Program

#Id: 8468

#Unit 1. Molecules and their Interaction Relevant to Biology

polyGlu is a random coil at pH values above about 5, where repulsion of negative charges prevents helix formation. 

TLS Online TPP Program

#Id: 7269

#Unit 6. System Physiology – Plant

The activity of rubisco is also regulated by light, but the enzyme itself does not respond to thioredoxin.

Two protons are released during the formation of the ternary complex rubisco–CO2–Mg2+, so activation is promoted by an increase in both pH and Mg2+ concentration.