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Enzymes are specific: meaning that an enzyme's active site is complementary to a particular substrate. In the lock and key hypothesis, a substrate that is complementary to the enzyme binds to the enzyme's...

1. detoxification: liver cells contain enzymes which break down toxins for example catalase, this enzyme is responsible for converting toxin hydrogen peroxide into water and oxygen. enzymes can detoxif...

-Primary structure is the number and sequence of amino acids in a polypeptide.-The secondary structure of a polypeptide is the formation of alpha helices and beta- pleated sheets stabilised by hydrogen bo...

You may remember that there are broad categories of microorganisms that cause diseases, such as bacteria, viruses and fungi which all have different properties and ways of causing disease. Antibiotics are...

The easiest way to remember the main different between xylem and phloem, when you know one transports glucose and the other water and minerals, is that phloem (pronounced as an 'f') = food, so glucose. An...