The vasoconstriction is due to serotonin, histamines & other vasoconstrictors liberated from platelets that adhere to the walls of the damaged vessels.

TLS Online TPP Program

#Id: 3976

#Unit 2. Cellular Organization

A bacterial type II enzyme, called either topoisomerase II or DNA gyrase, can introduce negative supercoils (decrease Lk). It uses the energy of ATP to accomplish this.

To alter DNA linking number, type II topoisomerases cleave both strands of a DNA molecule and pass another duplex through the break.

TLS Online TPP Program

#Id: 6440

#Unit 8. Inheritance Biology

TLS Online TPP Program

#Id: 3191

#Unit 3. Fundamental Processes

In mtDNA, The existence of D loops exposes a general principle: An origin can be a sequence of DNA that serves to initiate DNA synthesis using om strand as a Template.

TLS Online TPP Program

#Id: 1149

#Unit 7. System Physiology – Animal

Stellate cells (mesangial cells )

Located between the basal lamina and the endothelium

They are similar to pericytes

TLS Online TPP Program

#Id: 1371

#Unit 4. Cell Communication and Cell Signaling

The receptor for erythropoietin, GH, prolactin, G-CSF, activates STAT5 (but not STATs 1, 2, 3, or 4)