Biology

GCSE Biology. The school is not responsible for the content of external sites Every effort has been made to ensure that external links in this site are appropriate however the school cannot accept responsibility for their content Keep up to date click the button Ideas In Context 2011 This link will take you to the some questions and other resources for this years Ideas in context GCSE Biology and Additional Science Papers 2011. Revision:GCSE Biology - The Kidneys. TSR Wiki > Study Help > Subjects and Revision > Revision Notes > Biology > GCSE Biology - The Kidneys The kidneys The kidneys do three main things They remove urea from the blood They control the amount of ions (salts) in the blood They control the water content of the blood Urea is produced in the liver where proteins (which can’t be stored) are broken down into fats and carbohydrates, with the waste product as urea it is filtered out of the blood by the kidneys, because urea is poisonous.

Salts are eaten, and while the body needs some salts, a salty meal (for example) however, will have far too much salt, so kidneys will filter out the excess salts. Water which is taken in can be lost from the body in three ways; in the breath, in the sweat and in the urine. The kidneys are made up of the medulla and the cortex. Inside the kidneys there are millions of nephrons which filter the blood. Also See Here are the other comprehensive GCSE Biology notes by Prometheus: Comments.

GCSE - Science - Biology - Revision Sites. GCSE Biology. Biology | gcse-revision, biology. AQA Sciences from 2011 - GCSE Biology Unit 1. Biology GCSE and IGCSE Question Bank, questions for self-assessment or teaching, by D G Mackean. GCSE - Science - Biology - Revision - Links - Chemistry - Physics. GCSE Biology Revision.