5.1 Communication and Homeostasis

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5.1 Communication and Homeostasis 5.1 Communication and Homeostasis
  • 5.1 Communication and Homeostasis

  • Summary • 2 pages • 2023
  • OCR Biology A (A-level) 5.1 Communication and homeostasis including: homeostasis (examples of positive and negative feedback), thermoregulation ectotherms/endotherms and adaptations, cell signalling (neuronal and hormonal signalling). Excretion as homeostatic control: kidney failure via haemodialysis and peritoneal dialysis, liver structure and adaptations of sinusoids, ultrafiltration and selective reabsorption pathways. Deamination pathway - ornithine cycle, loop of henle.
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OCR A-Level Biology 5.1.4 Temperature Control in Endotherms OCR A-Level Biology 5.1.4 Temperature Control in Endotherms
  • OCR A-Level Biology 5.1.4 Temperature Control in Endotherms

  • Summary • 2 pages • 2023
  • Revision summary of key knowledge from OCR A-Level Biology 5.1.4 Temperature Control in Endotherms.
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OCR A-Level Biology 5.1.3 Temperature Control in Ectotherms OCR A-Level Biology 5.1.3 Temperature Control in Ectotherms
  • OCR A-Level Biology 5.1.3 Temperature Control in Ectotherms

  • Summary • 1 pages • 2023
  • Revision summary of key knowledge from OCR A-Level Biology 5.1.3 Temperature Control in Ectotherms.
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OCR A-Level Biology 5.1.2 Homeostasis OCR A-Level Biology 5.1.2 Homeostasis
  • OCR A-Level Biology 5.1.2 Homeostasis

  • Summary • 1 pages • 2023
  • Revision summary of key knowledge from OCR A-Level Biology 5.1.2 Homeostasis.
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