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Class: BIOL - Developmental Biology; Subject: Biology / Biological Sciences; University: University of Waterloo; Term: Forever 1989;
Typology: Quizzes
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Chemotaxis TERM 2
DEFINITION 2 T TERM 3
DEFINITION 3 Cause the sperm mitochondria to produce more ATP (for motion) TERM 4
DEFINITION 4 Acrosome membrane + sperm cell membranes fuse, acrosomal process is extended TERM 5
DEFINITION 5 Sperm membranes have receptors for specific sulfated polysaccharides on the egg jelly coats --> the binding of these to receptors initiates the acrosomal reaction
When the acrosomal protein (bindin) binds to an exposed vitelline envelope TERM 7
DEFINITION 7 To limit the number of sperm that can bind to the vitelline membrane TERM 8
DEFINITION 8 EBR1 glycoprotein TERM 9
DEFINITION 9 Formation of the fertilization coneRich in filamentous actin TERM 10
DEFINITION 10 Polyspermy
Cleaves protein posts that connects the vitelline envelope to the egg membrane TERM 17
DEFINITION 17 Glycosaminoglycans Bind to vitelline envelope, abosorb water and push the envelop away from the egg membrane --> making it a fertilization envelope. TERM 18
DEFINITION 18 Cortical granule serine protease Glycosaminoglycans Protein cross-linking enzymes Hyalin TERM 19
DEFINITION 19 Forms a coat around the egg for structural support TERM 20
DEFINITION 20 -secretory-Ca 2+
-they can use an additional secretory pathway for controlled release of things like hormones, neurotransmitters, digestive enzymes etc. TERM 22
DEFINITION 22 At fertilization, [Ca2+] increases in egg cytoplasm --> triggers cortical granule membrane fusion TERM 23
DEFINITION 23 Endoplasmic reticulum TERM 24
DEFINITION 24 IP TERM 25 DEFINITION 25 KNOW
-uterine contractions are required to get the sperm to the ampulla region-the isthmus slows down sperm and release them slowly to the ampulla TERM 32
DEFINITION 32 Direction cues form the oviduct (temperature gradients) Chemical cues from the oocyte/cumulus cells TERM 33
DEFINITION 33 The enabling of sperm to fertilize the egg during the voyage through the oviduct TERM 34
DEFINITION 34 Albumin in female reproductive tract removes cholesterol from sperm membrane --> changes location of lipid rafts that house receptors --> allows for right binding to zona pellucida Proteins + carbs lost (unmasking of binding sites) Membrane potential becomes more negative --> facilitation of membrane fusion (?) Protein phosphorylation --> chaperone protein phosphorylated --
important for Z.P. receptor Acrosomal membrane comes into contact w. sperm membrane (acrosome reaction) TERM 35
DEFINITION 35 -It can either increase/decrease membrane fluidity-low membrane fluidity
Like the vitelline envelope, but much thicker TERM 37
DEFINITION 37 Zona 1 Zona 2 Zona 3 TERM 38
DEFINITION 38 ZP3Acrosome reaction TERM 39
DEFINITION 39 The Z.P. is modified such that it can no longer bind sperm --> targets ZP TERM 40
DEFINITION 40 Sperm must decondensed as its tightly packaged with protamines