the fast block to polyspermy
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.
These chemical changes are the consequence of a chemical reaction.
The post acrosomal sheath is a structure in sperm cells that plays a role in helping the sperm penetrate the outer layer of the egg during fertilization. It contains enzymes that help break down the egg's protective barriers, allowing the sperm to enter and fertilize the egg.
One consequence of the advent of advertising and large-scale retailing is an increase in consumer choice and convenience.
One consequence that did not result from the advent of advertising and large-scale retailing was the decrease in consumer choice.
capacitation, acrosomal reaction, cleavage, implantation, decidual reaction
as evidenced by light microscopey electron microscopy and in vitro fertilization
A reply, response, reaction or consequence.
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.
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.
These chemical changes are the consequence of a chemical reaction.
One positive consequence of irrigating is securing food supplies even in dry seasons.
One possible consequence of Hypervitaminosis A is reduced bone density that can lead to osteoporosis.
No, it is not. Consequence is a noun (a result, or outcome of an action). One related adjective form is consequential.
The Consequence of Oil Part One - 2012 was released on: USA: 6 November 2012
An action is the initial force or movement that occurs, while a reaction is the response or consequence that follows the action. Actions are typically intentional and within our control, whereas reactions are often instinctive or automatic.
Enzymes speed up chemical reactions, so therefore it wouldn't happen as fast.