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sperm cells characteristics
Fertilise with the egg
long tail easy to swin
packed with mitochondria
contain enzymes which allow them to digest their way into the ovum
nerve cells characteristics
send electrical im pulse around the body
the axon carries one impulse to another part of the body
myelin insulates the axon and speeds it up
synapses allow the impulse from one cell to another
muscle cells characteristics
contain protein fibres which can change their length
they are packed with mitochondria to provide energy
muscle cells work together to make muscle tissue
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