Follicle cells and zona pellucida - outer layer of the cell
Cell membrane - middle layer of the cell
Cytoplasm, lysosomes, nucleus - inner cell
Size - bigger than sperm to contain mass cytoplasm as a lipid food reserve for early development of the embryo whilst as a zygote (fertilised cell) for the first 4-5 days
Coating - Follicle cells and zona pellucida - essential to allowing only one sperm cell to enter the egg cell cytoplasm and fertilise the egg
Tail - the egg cell has no flagellum and is immotile, unable to move, as it is simply wafted along the oviducts)
Lysosomes - release enzymes that cause a chemical reaction to occur and for the zona pellucida to thicken and disallow the entry of any more sperm cells following a sperm entering the cell cytoplasm
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