Online A comprehensive package for the hands-on teaching of Molecular Biology. The whole picture There is not one cell , but many different types of cells . Cells are like people. Look around you and you will see that everyone has their own job.
Cells are the same.
They all have their own job, and are therefore specialised. The theoretical plant cell used in these pages does not exist, it is just an example I created in order to show all the elements at once. Often, in a specialised cell, not all the elements are present, but some are numerous. We will see that when examining some examples of cells . The reproduction of some organisms contains a step when gametes are produced.