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NSWBiologyQuick questions
Module 8: Non-infectious Disease and Disorders
Quick questions on Homeostasis, feedback, thermoregulation and osmoregulation: HSC Biology Module 8
7short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are feedback loops?Show answer
<!-- Diagram: negative feedback loop | reviewed 2026-05-21 --> <svg class="fig" viewBox="0 0 540 320" role="img" aria-labelledby="neg-t neg-d"> <title id="neg-t">Negative feedback loop for homeostasis</title> <desc id="neg-d">A circular flow of arrows showing the five components of a feedback loop. Stimulus is detected by a receptor. The receptor sends a signal to the control centre. The control centre activates an effector.
What is osmoregulation?Show answer
Osmoregulation is the control of water and solute balance. The control centre is the hypothalamus, and the effector is the kidney via antidiuretic hormone (ADH, vasopressin).
What is cold response?Show answer
Skin thermoreceptors detect cold. The hypothalamus triggers:
What is heat response?Show answer
Skin and hypothalamic thermoreceptors detect heat. The hypothalamus triggers:
What is q1?Show answer
Define negative feedback and identify the three core components of any negative feedback loop. [3 marks]
What is q2?Show answer
A patient's blood glucose rises from 5 mmol/L to 9 mmol/L after a sugary drink, then returns to 5.2 mmol/L over 2 hours. Identify the hormone responsible and describe the negative feedback loop. [3 marks]
What is q3?Show answer
Compare ectothermic and endothermic thermoregulation. (a) Identify one Australian example of each. (b) Describe the main thermoregulation mechanism used by each.
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