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    hey
    i need help on my science text tomorrow. its ks3 higher biology, speacialised cells, cell divison, cell cycle and cells in general. and its tomorrow i know its last minute but i really neeed to do well on this text.

    thank you
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    embryonic stem cells are undifferentiated/unspecialised (until the eight cell stage in humans), which means they are able to divide to produce ant type of specialised cell.

    Unspecialised cells have all their genes switched on, however when they become specialised, the genes that are not required are switched off. Only the genes needed to make a particular type of cell work are switched on.

    If you want more, read this: http://www.bbc.co.uk/schools/gcsebit...cellrev1.shtml
 
 
 
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