When the sperm reaches the egg and joins with the nucleus what is it called
Fertilisation
What does the nucleus do?
Controls the cell
What is the cell membrane?
Allow things to enter the cell and exit
What are hormones?
Hormones are a chemical reaction inside the body it normally happens to people when they hit puberty
When the pennies enters the vagina what then happens?
Hundreds of sperm swim to find the egg the first one to it becomes fertilised