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Specialised cells
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- 1What is a multicellular organism?Contains lots of different types of cells.
- 2What are the 2 main cells that are specialised in sexual reproduction?Sperm
Egg - 3What happens during sexual reproduction?Nucleus of egg fuses with Nucleus of the sperm to create a fertilised egg. Which develops into an embryo.
- 4How many numbers of chromosomes does a sperm/ egg have?They have half the number of chromosomes.
23 Chromosomes.
Called a haploid cell. - 5What are the functions of an egg cell?To carry the females DNA, and nourish the developing embryo in early stages.
- 6How is a egg cell adapted to its function?Nutrients in cytoplasm to feed embryo.
Haploid nucleus.
After fertilisation- membrane changes so no more sperm could get in. - 7What are the functions of an sperm cell?Transport the males DNA to females egg.
- 8How is a sperm cell adapted to its function?Long tail so it can swim in
Mitochondria to provide energy needed to swim.
Acrosome where it stores enzymes needed to digest its way through the membrane of the egg. - 9What is a Ciliated Epithelial Cell?They move substances along the surface of a tissue.
- 10How is a Ciliated Epithelial Cell adapted to its functions?Hair like structure- help move substance like mucus away from the body cell.
Información
- Descripción
- This is all the information needed for edexcel gcse Biology topic 'Specialised cells'.
- Creado por
- Adil Iqbal
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