Fast block to polyspermy 

Within 1–3 seconds after the binding of the first sperm, the membrane potential shifts from -70mV to about +20 mV

TLS Online TPP Program

#Id: 5800

#Unit 7. System Physiology – Animal

Thyrotropin-releasing hormone (TRH) Tripeptide (amide—pyroglutamyl-histidylproline-amide) Stimulates secretion of TSH by thyrotropes

TLS Online TPP Program

#Id: 10110

#Unit 4. Cell Communication and Cell Signaling

Ca2+-dependent cadherin- mediated adhesion also plays an important role in tight-junction formation, stability, and function

TLS Online TPP Program

#Id: 5621

#Unit 7. System Physiology – Animal

Impulses from nociceptors are transmitted via two

fiber types:

Thinly myelinated Aδ fibers (2–5 μm in diameter) that conduct at rates of ∼12–35 m/s 

Unmyelinated C fibers (0.4–1.2 μm in diameter) that conduct at low rates of ∼0.5–2 m/s

TLS Online TPP Program

#Id: 2460

#Unit 13. Methods in Biology

During electrophoresis generation of heat is the major problem which leads to

ncreased rate of diffusion of sample and buffer ions.

Thermal instability which include denaturation of proteins.

A decrease of buffer viscosity.

Convection current leads mixing of separated samples

TLS Online TPP Program

#Id: 3531

#Unit 2. Cellular Organization

Synteny provides a framework in which conservation of homologous genes and gene order is identified between genomes of different species