Making new cells

Abstract

Cells in plants and animals do work. In plants, for example, living cells are making food, or transporting food. In animals, they are moving limbs, making secretions, receiving stimuli and so on. Working will result in some cells becoming worn out and these will need replacing. Cells divide to make new cells. New, small cells gradually increase in size, so that they are able to work. To summarise, we can say that cells:

• work

• divide

• increase in size.