<span>The mammalian sperm cell consists of a head, a midpiece and a tail. The head contains the nucleus with densely coiled chromatin fibres, surrounded anteriorly by an acrosome, which contains enzymes used for penetrating the female egg.</span>
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<span>D) kilograms, newtons
Hope this helps!(: </span>
Stem in plants:
Is the movement of material like water and minerals from roots to leaves. And they storage foods.