TLS Online TPP Program

#Id: 10489

#Unit 4. Cell Communication and Cell Signaling

Cytotoxic T cells release granules containing the proteins perforin and granzyme-B

TLS Online TPP Program

#Id: 9561

#Unit 11. Evolution and Behavior

Ronald A. Fisher, John B. S. Haldane and Sewall Wright - which showed that mutation and natural selection together cause adaptive evolution.

TLS Online TPP Program

#Id: 753

#Unit 3. Fundamental Processes

One metal ion generate a 3’O- that is primed for the nucleophilic attack of the a-phosphate of the incoming dNTP.

TLS Online TPP Program

#Id: 6051

#Unit 10. Ecological Principles

Grasslands   Grasslands are found on every continent except Antarctica, and cover about 16 per cent of the Earth’s surface.  They develop where there is not enough precipitation to support forests, but enough to prevent deserts forming.

TLS Online TPP Program

#Id: 8834

#Unit 6. System Physiology – Plant

Buildup of a acidic thylakoid ΔpH in the presence of excess light resulting the thylakoid lumen activates an enzyme (violaxanthin de‐epoxidase) that converts violaxanthin into zeaxanthin