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ADH (antidiuretic hormone) is a hormone that targets the kidney. It triggers the insertion of aquaporins into the walls of the collecting duct.

When the water concentration in the body is too low (...

Enzymes are biological catalysts. This means they spead up chemical reactions in the body. To understand why they might stop working, you must first look at the structure. Enzymes are proteins made up of ...

This rather strange question is an example of an actual exam problem taken from the 2017 AQA Biology Exam which threw a lot of students off. The question in itself, however, is a good starting point for t...

Communication is a process that involves the transfer of a signal/information from one cell to another. The main reason this has arisen between cells comes down to the basic component that makes up a huma...

4 main processes: ammonification nitrification nitrogen fixation denitrification NITROGEN FIXATION: the process by which N2 gas converted --> nitrogen containing compo...