B3 Topic 1 0.0 / 5 ? BiologyGCSEEdexcel Created by: StormaggeddenCreated on: 09-04-13 11:29 ADH A hormone created by the piturity gland that causes the kidneys to reatin water 1 of 6 B Lymphocyte A type of lymphocyte that produces antibodies 2 of 6 Biological clock A timing mechanism in the body in the body that helps control various rythems 3 of 6 Nephron A kidney tubule 4 of 6 Melatonin The hormone that makes you sleepy 5 of 6 Photoperiodism Animal and plant reactions towards light 6 of 6
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