Pointers

  1. Home
  2. Free Resources
  3. Pointers
  4. 4029
TLS Online TPP Program

#Id: 4029

The effects of the autonomic nervous system on heart rate are called chronotropic effects

#Unit 7. System Physiology – Animal #Blood pressure, neural and chemical regulation of Cardiovascular System #Part B Pointers
PYQ Links
  1. PYQ 1
Extensive Links
  1. Link 1
More Pointers
TLS Online TPP Program

#Id: 954

#Unit 5. Developmental Biology

When sulfated polysaccharide binds to its receptor on the sperm, activates 3 sperm membrane proteins: 
(1) A calcium transport channel
(2) A sodium-hydrogen exchanger
(3) A phospholipase enzyme (IP3)
TLS Online TPP Program

#Id: 955

#Unit 5. Developmental Biology

Extension of the acrosomal process by the polymerization of G-actin molecules into F-actin by RhoB
TLS Online TPP Program

#Id: 956

#Unit 5. Developmental Biology

Acrosomal process have an insoluble, 30,500-Da protein called bindin.
TLS Online TPP Program

#Id: 957

#Unit 5. Developmental Biology

Species-specific bindin receptors present on the egg vitelline envelope.
TLS Online TPP Program

#Id: 958

#Unit 5. Developmental Biology

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: 959

#Unit 5. Developmental Biology

Slow block to polyspermy (cortical granule reaction) becomes active about a minute after the first successful sperm-egg fusion