CCEA Biology A2 Unit 1 Exam Questions & Answers





Homeostasis - ANSWERSthe maintenance of constant conditions within the body



Excretion - ANSWERSis the removal of the toxic waste from metabolism



Urea - ANSWERSa nitrogenous waste produced during the breakdown of excess amino acids in the liver



Osmoregulation - ANSWERSthe control of water potential of body fluids; helped by the kidneys



Cortex - ANSWERSthe outer dark region in the kidney



Medulla - ANSWERSthe inner lighter region i...
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