AC9S9U01 Year 9 Science

This Content Descriptor from Year 9 Science provides the specific knowledge and skills students should learn. Use it to plan lessons, create learning sequences, and design assessments that align with the Australian Curriculum v9.

compare the role of body systems in regulating and coordinating the body’s response to a stimulus, and describe the operation of a negative feedback mechanism

Elaborations

• 1 exploring the body’s observable responses to external stimuli (such as changes in light or temperature, or presence of danger or pathogens) or internal stimuli (such as dehydration or hunger)
• 2 using models, flow diagrams and virtual simulations to explore and represent the relationships between body systems that are necessary to coordinate a response to stimuli
• 3 comparing the role and function of electrical impulses and hormones in the body’s responses to external stimuli
• 4 modelling how the process of regulation is monitored and adjusted by connections between the receptor, command centre and effector
• 5 examining the effects of a disorder in a feedback system, such as diabetes-induced blindness or hypothermia
• 6 considering how understanding of feedback mechanisms has enabled the development of pharmaceuticals and other products to address issues or enhance performance, such as insulin or electrolytes in sports drinks

Related Achievement Standards