5_9_07 - impermeable to other sperm cells. FINAL QUESTION...

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May 9, 2007 Biology 130 Embryology Epigenesis Animal development o Mitosis o Migration in blastula o Differentiation in gastrula as cells specialize Plant cell development o Mitosis o Differentiation Fertilization o Only sperm from same species can digest part of egg cell – vitelline layer o Digestive enzymes in acrosome o Only if binding between sperm binding receptors to acrosomal process happens can fertilization occur and let sperm enter the cell o Induces signal transduction pathway G-protein, activates a phospholipase C, IP 3 (inositol 3-phosphate), increases intracellular Ca +2 (opens channels), Ca +2 as secondary messenger, binds to cal modulin, cla modulin allosterically modulates enzymes involved in exocytosis of vesicles which release protein compounds to change osmolarity of between vitelline layer and membrane, swelling occurs making the egg
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Unformatted text preview: impermeable to other sperm cells. FINAL QUESTION Cleavage o Cells divide and move Gastrulation o Cells begin to differentiate Organ formation Growth of specialized tissue Fertilization sperm from same species digests vitelline layer. Enzymes in acrosome. Acrosomal process begins when sperm binds - Induces signal transduction pathway G-protein, activates phospholip C, IP 3 (inositol 3-phosphate), ups intracellular Ca +2 (opens channels), Ca +2 as 2 nd messenger, binds to cal modulin, cal modulin allosterically modulates enzymes involved in exocytosis of vesicles release prot cpds to change osmolarity of between vitelline layer and membrane, swelling occurs making the egg imp to other sperm cells....
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This note was uploaded on 09/29/2009 for the course NPB NPB 101 taught by Professor Weidner/wingfield during the Spring '08 term at UC Davis.

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