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Cell structure and microscopy Typeit
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Many cells are specialised to allow them to perform their functions. For example, sperm cells have many as they require a lot of energy to power the for swimming, and an which contains enzymes to allow the sperm cell to enter the egg cell. Both sperm and egg cells have a nucleus so that when they combine, the resulting embryo will have the correct number of chromosomes. The nucleus of the egg cell is also packed with many to allow the embryo to develop, and the can become hard after fertilisation so that no other sperm cells can enter.
In order to look at different cells, scientists place a sample on the of a light microscope and look down the . This has a magnification of ×, while the objective lens has lenses at different magnifications, allowing them to see cells at different overall magnifications.