🎯 WALT: We Are Learning To understand negative feedback mechanisms in biological systems

📚 Part 1: Multiple Choice Questions

1. What is negative feedback?

A system that amplifies changes in the body

A system that counteracts changes to maintain stability

A system that only works when you're ill

A system that controls positive emotions

2. Which of these is an example of negative feedback?

Blood clotting after a cut

Body temperature regulation

Labour contractions during childbirth

Sweating during exercise

3. What happens when your body temperature rises above 37°C?

You start shivering

Your muscles contract

You start sweating

Your heart rate decreases

4. Which components are involved in negative feedback? (Select all that apply)

Stimulus

Receptor

Control centre

Effector

Response

✏️ Part 2: Short Answer Questions

5. Fill in the blanks about blood glucose regulation:

When blood glucose levels rise after eating, the pancreas releases the hormone ____________. This causes cells to take up glucose, which ____________ blood glucose levels back to normal. This is an example of ____________ feedback.

6. Explain the difference between negative and positive feedback in your own words:

7. Describe what happens when your body gets too cold. Use the terms: stimulus, receptor, control centre, effector, and response.

🧠 Part 3: Application and Extension

8. Scenario: You are running on a hot day and your body temperature starts to rise. Draw and label a diagram showing how negative feedback helps maintain your body temperature.

9. Extension: Diabetes is a condition where blood glucose regulation doesn't work properly. Explain how this represents a failure of negative feedback and suggest why this could be dangerous.

10. Challenge: Can you think of another example of negative feedback in the human body? Describe it briefly.