First slide

Fertilisation and Implantation

Question

Capacitation refers to changes in the

Difficult

A

ovum after fertilisation
B

sperm after fertilisation
C

sperm before fertilisation
D

ovum before fertilisation.

Solution

Capacitation refers to a series of functional changes that sperm undergo in the female reproductive tract before they are able to fertilise a secondary oocyte.
Capacitation causes a sperm cell’s tail to beat even more vigorously, and it prepares the sperm cell’s plasma membrane to fuse with the oocyte’s plasma membrane.
During capacitation, the glycoprotein coat and seminal plasma proteins covering the plasma membrane of sperm in the acrosomal region are removed.

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