Homeostasis and Negative Feedback – Concepts and Breathing Experiments

Type of Resource



This minds-on, hands-on activity begins with analysis and discussion questions that develop student understanding of homeostasis, negative feedback, and positive feedback. Next, students analyze examples of how breathing changes at high altitude and during vigorous exercise plus background information about cellular respiration and the circulatory and respiratory systems. Students use this information to develop a model of negative feedback regulation of blood levels of CO2 and O2. Then, they ca

Performance Expectations

HS-LS1-3   Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.