01:119:116 Lecture Notes - Lecture 16: Cellular Respiration, Glycoprotein, Signal Transduction

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:116
• Professor: Beal

Document Summary

Now that you know all the steps can you start with the testes and the ovary and go all the way through fertilization and cleavage. List the steps in fertilization and what occurs at each step. Flow chart the acrosome rxn and the cortical rxn. Cc fertilization and cleavage in echinoderm, frog, chicken, and a human. Development= all changes that occur over a lifetime. What are consequences of fert? i. ii. iii. External fertilization- jelly coat chemicals attract sperm (chemotaxis) Protein molecs at tip bind to specific receptors. Enzymes clip off and release other sperm- this is permanent. Fast block to polyspermy- triggered by membrane fusion. Unfertilized egg cytoplasm negatively charged relative to outside. At fert--> ion channels in egg plasma membrane open. Egg depolarizes- 1 to 3 seconds, lasts about 1 minute. Ca+ is released from er (smooth or rough?) Cortical granules= vesicles in cortex that release enzymes. Sperm bind to zp3 (a specific glycoprotein) in zona pellucida.