TLS Online TPP Program

#Id: 2146

#Unit 9. Diversity of Life Forms

Homoplasy is similarity arrived at via independent evolution.

TLS Online TPP Program

#Id: 5438

#Unit 7. System Physiology – Animal

Voltage-gated sodium channel has two gates:

activation gate near the outside of the channel 

Inactivation gate near 

the inside of the channel 

TLS Online TPP Program

#Id: 2409

#Unit 3. Fundamental Processes

Hydrolytic editing is stimulated by Gre factors, which both enhance hydrolytic editing function and serve as elongation stimulating factors.

TLS Online TPP Program

#Id: 918

#Unit 13. Methods in Biology

Propidium iodide-labeled cells in order as

1. Apoptotic cells

2. G1/G0

3. S

4. G2/M  

TLS Online TPP Program

#Id: 6500

#Unit 3. Fundamental Processes

To extend elongation into the transcription unit, a kinase complex called P-TEFb is required. P-TEFb contains the CDK9 kinase, which is a member of the kinase family that controls the cell cycle. P-TEFb acts on the CTD to phosphorylate it further on serine 2 of the heptapeptide repeat.