Conducting cells constitute tissues of the SA node, the atrial internodal tracts, the AV node, the bundle of His, & the Purkinje system.

TLS Online TPP Program

#Id: 6369

#Unit 2. Cellular Organization

When polymerase binding causes transition to the open complex and initiates transcription. This gives a low level of constitutive expression called the basal level.  Binding of RNA polymerase is the rate-limiting step in this case.

TLS Online TPP Program

#Id: 10341

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 2547

#Unit 13. Methods in Biology

Primer sequence also· affects PCR efficiency. For example, if the primers used for PCR have complementary regions, primer dimers will be formed, and PCR efficiency will markedly decline.

TLS Online TPP Program

#Id: 2591

#Unit 13. Methods in Biology

Touchdown  PCR is initiated at very high annealing temperatures, which allow only perfectly matched primer-template DNA hybrids to form and support amplification. The annealing temperature is dropped in a stepwise fashion with each cycle of PCR. 

TLS Online TPP Program

#Id: 9357

#Unit 4. Cell Communication and Cell Signaling

RII phosphorylates serine and threonine in the juxtamembrane segment of the RI (ligand induced receptor hetero-oligomerization), releasing the inhibition of RI kinase activity.