Rapid Ventricular Ejection

end of this phase coincides with the end of the ST segment (or the beginning of the T wave) on the ECG and with the end of ventricular contraction.

TLS Online TPP Program

#Id: 6881

#Unit 3. Fundamental Processes

This mechanism is a key feature of Polycomb repression, which is maintained through successive cell divisions for the life of an organism (~100 years for some vertebrates, 2000 years for a sugar cone pine!)

TLS Online TPP Program

#Id: 9473

#Unit 4. Cell Communication and Cell Signaling

SHP1 a phosphotyrosine phosphatase, contains:

SH2 domain  & Phosphatase domain

TLS Online TPP Program

#Id: 9233

#Unit 6. System Physiology – Plant

Photorespiration stimulates nitrate assimilation in C3 plant roots, probably by increasing NADH availability in the cytosol.

Photorespiration is positively correlated with growth under nitrogen limitation

TLS Online TPP Program

#Id: 9054

#Unit 4. Cell Communication and Cell Signaling

The activated β2-adrenergic receptor induces GDP-->GTP exchange on a stimulatory G protein (Gs).

TLS Online TPP Program

#Id: 5031

#Unit 3. Fundamental Processes

The gene ftsZ plays a central role in division.

Mutations in ftsZ block septum formation and generate filaments.

Overexpression induces minicells by causing an increased number of septation events per unit cell mass.

FtsZ (the protein) recruits a battery of cell division proteins that are responsible for synthesis of the new septum.