Homeostasis


Inquiry question: How is an organism’s internal environment maintained in response to a changing
external environment?

Construct and interpret negative feedback loops that show homeostasis by using a range of sources, including but not limited to: (ACSBL101, ACSBL110, ACSBL111)

  • temperature (ACSBL098)
  • glucose

Investigate the various mechanisms used by organisms to maintain their internal environment within tolerance limits, including:

  • trends and patterns in behavioural, structural and physiological adaptations in endotherms that assist in maintaining homeostasis (ACSBL099, ACSBL114)
  • internal coordination systems that allow homeostasis to be maintained, including hormones and neural pathways (ACSBL112, ACSBL113, ACSBL114)
  • mechanisms in plants that allow water balance to be maintained (ACSBL115)

Extract from HSC Biology Stage 6 Syllabus. © 2017 Board of Studies NSW.