What helps in the penetration of egg by the sperm?
A
Fertilizin
B
Antifertilizin
C
Sperm lysin
D
Fertilization membrane
Answers
Answered by
6
answer is fertilization membrane.
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Answered by
9
Sperm lysin helps in penetration of egg :-
(1) Due to activity of enzyme, sperm lycin,the cells of the corona radiata,(at the point of contact with the sperm) get digested.
(2) The Sperm then achieves contact with the Zona pellucida.
(3) The acrosome secretes another enzyme called Zona lysine, so that an aperture is created in the Zona pellucida.
(4) Sperm, then,achieves contact with the plasma membrane of the ovum.
(5) At the point of contact, the plasma membrane of the ovum and the sperm get dissolved and only the nucleus of the sperm enters the ovum.
(6) The remaining of the acrosome, tail and mitochondria of the middle piece of the sperm, remain outside and don't enter the egg.
(7) A signal is transmitted to the egg surface, once, a sperm enters the ovum. This prevent, the entery of other sperms.
Hope, it helps to understand, how,Sperm lysine play role in penetrating egg to fertilize it.
(1) Due to activity of enzyme, sperm lycin,the cells of the corona radiata,(at the point of contact with the sperm) get digested.
(2) The Sperm then achieves contact with the Zona pellucida.
(3) The acrosome secretes another enzyme called Zona lysine, so that an aperture is created in the Zona pellucida.
(4) Sperm, then,achieves contact with the plasma membrane of the ovum.
(5) At the point of contact, the plasma membrane of the ovum and the sperm get dissolved and only the nucleus of the sperm enters the ovum.
(6) The remaining of the acrosome, tail and mitochondria of the middle piece of the sperm, remain outside and don't enter the egg.
(7) A signal is transmitted to the egg surface, once, a sperm enters the ovum. This prevent, the entery of other sperms.
Hope, it helps to understand, how,Sperm lysine play role in penetrating egg to fertilize it.
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