Specialised cells unit 1



sperm cell-

-make gamete in animals

-tail like structure- to be able to move faster to the egg

-many mitochondria- supply of energy for movement to the egg

-head made of digestive enzymes, they are released when the sperm meets the egg to digest the eggs protective layer and allow the sperm to penitrate

function- deliver genetic info to the egg

egg cell

-female gamete in animals

-nucleus- houses all the genetic infomation

-zona pellucida- outer protective layer 

function-supply protiens needed by the fertalised egg cell

red blood cell

-biconcave shape- increases the SA:volume ratio of the erythrocyte

- the cell is flexable so they can squeeze through…


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