Phase 0 (depolarization), fast sodium channels open. 

TLS Online TPP Program

#Id: 1382

#Unit 4. Cell Communication and Cell Signaling

Profilin enhances the exchange of ADP for ATP on G-actin. Cofilin enhances the rate of loss of ADP-actin from the filament (−) end. Thymosin-β4, binds to ATP–G-actin in such a way that it inhibits addition of the actin subunit to either end of the filament.

TLS Online TPP Program

#Id: 5785

#Unit 7. System Physiology – Animal

Process of concentrating the iodide in the cell is called iodide trapping

TLS Online TPP Program

#Id: 7887

#Unit 2. Cellular Organization

In highly polarized cells, mitochondria can move long distances being propelled along microtubule tracks

TLS Online TPP Program

#Id: 4750

#Unit 5. Developmental Biology

During first cleavage, the metaphase plate is closer to the posterior, & fertilized egg is divided into two cells:

one having the anterior PARs (PAR-6 and PAR-3)

one having the posterior PARs (PAR-2 and PAR-1)

TLS Online TPP Program

#Id: 4704

#Unit 11. Evolution and Behavior

In haplodiploid organisms, males are haploid, and females are diploid. Consider the relatedness diagram shown below. Female A has a full-sister, Y, who has a daughter, B. The relatedness between A and B is ___________.