Difference between revisions of "Fertilisation"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
| − | [[Fertilisation]] is | + | [[Fertilisation]] is one of the stages of [[conception]] in which the [[male]] and [[female]] [[Gamete|sex cells]] come together to make one [[Cell (Biology)|cell]]. |
===About Fertilisation=== | ===About Fertilisation=== | ||
Revision as of 07:41, 25 July 2019
Contents
Key Stage 3
Meaning
Fertilisation is one of the stages of conception in which the male and female sex cells come together to make one cell.
About Fertilisation
- In fertilisation the sperm cell uses enzymes in its head to get through the jelly coat of the ovum.
- The jelly coat of the ovum then becomes hard, stopping any other sperm entering.
- The cell membrane of the sperm cell then fuses with the cell membrane of the ovum and the sperm cell loses its tail.
- The nucleus of the sperm cell is then released into the ovum and the nuclei of the ovum and sperm fuse to make one larger nucleus with all the DNA needed to make a new organism.
Key Stage 4
Meaning
Fertilisation is when the male and female gametes come together to make one cell.
About Fertilisation
- During fertilisation the two haploid gametes fuse together to form a diploid cell.