The biggest part of the sperm enters the egg first. The whole sperm eventually is in the egg.
The process of uniting an egg with sperm is called fertilization.
Egg cells are the biggest: you could only fit one on the head of a pin. But I'm not sure if a sperm cell is bigger than a red blood cell or vice versa.
So that the sperm can break through to fertalise the egg.Because it enters to egg cell through its head only. The enzymes present at the top of its head facilitate the penetration of sperm in the egg cell.
The fact that only one sperm can fertilize an egg. After the sperm enters the cytoplasm of the oocyte, the cortical reaction takes place, preventing other sperm from fertilizing the same egg
Once the first sperm penetrates the egg, a series of changes take place in the protective layers around the outside of the main part of the egg (oocyte). This process, called the cortical reaction, makes the layers hard and not able to be penetrated by any other sperm. When the sperm's plasma membrane fuses with the egg's plasma membrane, there is a depolarisation of the egg's plasma membrane caused by an influx of sodium ions into the cell. This acts as a temperary barrier (several minutes) to other sperm until the outer vitiline layer of the egg becomes solid!!
The sperm enters the egg (conception) in the fallopian tube.
At conception, the sperm enters the egg and the DNA of the sperm merges with the DNA of the Egg cell.
The sperm create an enzyme that eats away at the outer layer of the membrane of the egg allowing it to enter. The sperm then enters the egg and attaches its self.
It fuses with the membrane of the egg cell, and the content of the sperm cell enters the egg cell.
The process of uniting an egg with sperm is called fertilization.
Zygote
Once a sperm enters the egg, fertilisation of the egg begins.
When sperm and egg unite it is usually in the fallopian or uterine tube. It then can take up to 7 days for it to travel to the uterus for implantation.
The size of egg is larger than sperm because the the sperm enters inside the egg and egg has to accommodate the sperm. And egg contains fats and nutrients in order to feed zygote in case of pregnancy.
The sperm enters the egg cell.After nine months it will be a baby.But sometimes its just not successfull.
A fertilized egg cell is when a sperm enters an egg. The result is a fertilized egg cell, or a zygote.
Egg cells are the biggest: you could only fit one on the head of a pin. But I'm not sure if a sperm cell is bigger than a red blood cell or vice versa.