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Biology GCSE like any other requires a basic level of understanding, but in addition it requires you to use scientific terminology. By using specific words or descriptions in your answers you make it easi...

They can engulf and ingest pathogens; this is essentially the white blood 'eats' the pathogen. They secrete (release) antitoxins which counteract the toxins released by pathogens. The toxins they release ...

The lock and key model:

Only substrates of a specific shape that is complementary to the active site of an enzyme can fit into the active site, in a way that is analagous to a key fitting...

A hormone is a chemical messenger. It is produced by a gland and then travels in the blood to a specific target organ where it causes a response, changing the way the body functions. Hormones can be pr...

Energy in the form of ATP, which is used to fuel chemical reactions in our body as well as many other processes.

Waste products: Carbon dioxide and water.