Summary (CIE 9700) Biology A2 - Homeostasis

Homeostasis Content: 1) Homeostasis in mammals a) importance of homeostasis b) homeostasis - definition c) external and internal stimuli d) negative feedback e) nervous system f) endocrine system g) deamination h) structure of the kidney i) ultrafiltration j) selective reabsorption k) structure and function of the nephron l) steps involved in the formation of urine m) roles of the hypothalamus, posterior pituitary gland, ADH and collecting ducts in osmoregulation n) blood glucose concentration o) insulin and glucagon p) cyclic AMP q) diabetes r) dip sticks s) biosensor t) urine analysis 2) Homeostasis in plants a) stomata b) guard cells c) abscisic acid d) closure of stomata during times of water stress