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the fast block to polyspermy
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What is the acrosome reaction?
The acrosome reaction must be completed before the sperm can fuse with the secondary oocyte, during the process of fertilisation. It occurs when the sperm comes into contact with the corona radiata of the secondary oocyte. Initally, perforations will develop in the acrosome, and then there will be point fusions of the sperm plasma membrane and the outer acrosomal membrane. The acrosome reaction is associated with the release of enzymes which facilitate fertilisation. The passage of sperm through the corona radiata is dependent on hyaluronidase, an acrosomal membrane, as well as tubal mucosal enzymes. Flagella action of the sperm also helps penetration of the corona radiata. Other important acrosomal enzymes include esterases, and lysin which causes lysis of the zona pellucida.
Functions of enzymes in acrosomal cap?
helps in the penetration of the spermatozoon into the ovum during fertiliztaion.
What change resulting to new material that is entirely different from the reactants?
These chemical changes are the consequence of a chemical reaction.
What do you mean by photochemical reaction?
A primary photochemical reaction is the immediate consequence of the absorption of light. Subsequent chemical changes are called secondary processes. http://edelsteincenter.files.wordpress.com/2010/07/photochemistry.pdf
What kind of chemical reaction is exothermic reaction?
An exothermic reaction is one that proceeds with the evolution of heat.
Which of the following arrangements of events is in proper order of occurrence?
capacitation, acrosomal reaction, cleavage, implantation, decidual reaction
Acrosomal reaction in fertilization in bovines?
as evidenced by light microscopey electron microscopy and in vitro fertilization
What is the acrosome reaction?
The acrosome reaction must be completed before the sperm can fuse with the secondary oocyte, during the process of fertilisation. It occurs when the sperm comes into contact with the corona radiata of the secondary oocyte. Initally, perforations will develop in the acrosome, and then there will be point fusions of the sperm plasma membrane and the outer acrosomal membrane. The acrosome reaction is associated with the release of enzymes which facilitate fertilisation. The passage of sperm through the corona radiata is dependent on hyaluronidase, an acrosomal membrane, as well as tubal mucosal enzymes. Flagella action of the sperm also helps penetration of the corona radiata. Other important acrosomal enzymes include esterases, and lysin which causes lysis of the zona pellucida.
What is feeback in communication?
A reply, response, reaction or consequence.
What is sperm structure?
The headPlasma membraneOuter acrosomal membraneAcrosomeInner acrosomal membraneNucleusProximal centrioleThe NeckRest of the distal centrioleThe Mid pieceThick outer longitudinal fibersMitochondrionAxonemeThe Principal pieceRing fibersThe Endpiece
What is the law of action reaction?
if a response in a particular situation is followed by a satisfying consequence, it will be strengthened. if a response in a particular situation is followed by an unsatisfied consequence, it will be weakened.
Functions of enzymes in acrosomal cap?
helps in the penetration of the spermatozoon into the ovum during fertiliztaion.
What causes to rust?
Rust is a consequence of a chemical reaction: oxidation (reaction with oxygen) of iron and iron containing alloys. The oxide Fe2O3 (generally hydrated) is formed.
What change resulting to new material that is entirely different from the reactants?
These chemical changes are the consequence of a chemical reaction.
What was one positive consequence of irrigating?
One positive consequence of irrigating is securing food supplies even in dry seasons.
What is one possible consequence of hypervitaminosis of vitamin A?
One possible consequence of Hypervitaminosis A is reduced bone density that can lead to osteoporosis.
Is consequence an adjective?
No, it is not. Consequence is a noun (a result, or outcome of an action). One related adjective form is consequential.
