vitelline membrane vs. zone pellucida

[rcwha]

Can somebody plz tell me the difference btwn the two as far as function is concerned? Do they both prevent multiple fertilzation?

Also, a question from Achiever

Which of the following membrane structures serves as fast block to multiple fertilizations at an animal egg cell? . Jelly coat B. Corona radiata C. Zona pellucida D. Fertilization membrane E. None of the above


I put C the first time i took this exam, but now I think it is zona pellucida or vitelline membrance.
The answer is D: It is the swift acrosomal process of membrane depolarization on the egg cell that has phenomenally been known as the fast block to multiple fertilizations.


Can somebody plz explain?

thanks in advance !

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[pistolpete007]

i had a post on this type of question...check my posts

 

[osimsDDS]

Can somebody plz tell me the difference btwn the two as far as function is concerned? Do they both prevent multiple fertilzation?

Also, a question from Achiever

Which of the following membrane structures serves as fast block to multiple fertilizations at an animal egg cell? . Jelly coat B. Corona radiata C. Zona pellucida D. Fertilization membrane E. None of the above


I put C the first time i took this exam, but now I think it is zona pellucida or vitelline membrance.
The answer is D: It is the swift acrosomal process of membrane depolarization on the egg cell that has phenomenally been known as the fast block to multiple fertilizations.


Can somebody plz explain?

thanks in advance !

I think this has to do with the fast block to polyspermy because once a single sperm enters the egg membrane depolarization occurs where the egg was lets say positive and attracted negative sperm but once the sperm is inside there is a depolarization where the egg reverses its polarity and now its negative shunting all of the negative sperm away...for the zona pelucida reaction/granule reaction i believe this is a slow block to polyspermy after memrane depolarization...because the granules are secreted and the zona pelucida becomes very tough and thick not allowing any sperm that reach the egg to enter...

 

[Glycogen]

Check this out and thank you for mentioning this b/c I really did not pay attention that there are 2 reactions.

http://bcs.whfreeman.com/thelifewire/content/chp43/4302001.html

 

[osimsDDS]

Check this out and thank you for mentioning this b/c I really did not pay attention that there are 2 reactions.

http://bcs.whfreeman.com/thelifewire/content/chp43/4302001.html

sick that was actually really helpful, so i messed up on the charges, it becomes + from - after acrosome reaction and acrosome process...

SOOO basically acrosome reaction is fast block to polyspermy and granule reaction is slow block to polyspermy...is that correct???

 

[Glycogen]

sick that was actually really helpful, so i messed up on the charges, it becomes + from - after acrosome reaction and acrosome process...

SOOO basically acrosome reaction is fast block to polyspermy and granule reaction is slow block to polyspermy...is that correct???

I would say so.That's what it says.

 

[rcwha]

Sweetness, thanks guys!