Homeostasis Consolidation Worksheet

Name:

Date:

📚 Part 1: Quick check (MCQs & short answers)

1. Which statement best defines homeostasis?

Maintaining a stable internal environment despite external change

Rapid growth in response to a stimulus

Permanent change in behaviour after learning

Movement of cells towards a chemical signal

2. Which describes a negative feedback mechanism?

A response that reduces the original stimulus

A response that amplifies the original stimulus

A one-off change that cannot be reversed

A reaction caused only by external factors

3. Match each component of a feedback loop to its role. Draw a line to connect left to right.

A. Receptor

B. Control centre

C. Effector

1. Carries out the response to restore balance

2. Detects the stimulus (change)

3. Processes information and sends instructions

4. Short answer (one sentence): Explain how blood glucose is regulated when levels rise after a meal. ____

✏️ Part 2: Case study, diagram and reflection

Case study (brief): A 16-year-old student has frequent thirst, urination and high blood glucose. They are diagnosed with Type 1 diabetes — the pancreas cannot produce insulin.

5. Which system is primarily disrupted?

Nervous system

Endocrine system

Respiratory system

Digestive system

6. Describe one immediate physiological effect of insufficient insulin (1–2 lines).

7. Sketch a simplified negative feedback loop showing: stimulus → receptor → control centre → effector. Mark where insulin is missing. (Label each part.)

8. Suggest one treatment or compensation and explain briefly how it helps restore balance (2–3 lines).

Reflection & self-assessment

9. Use these sentence starters to reflect:

"Homeostasis I understand well is..."

"I find it difficult to..."

"One question I still have is..."

Success criteria

- I can describe at least two examples of homeostatic control (eg blood glucose, temperature).

- I can label receptor, control centre and effector and explain negative feedback.

- I can analyse a simple case study and suggest an appropriate intervention.

Differentiation strategies (for teacher use)

- Scaffolded support: provide sentence starters and a partially completed flowchart for students needing help.

- Peer support: pair lower-literacy students with peers for the case study.

- Visual learners: use diagrams and the drawing-box to map feedback loops.

Extension activities (for advanced learners)

- Research a less common homeostatic disorder and prepare a 3-slide explanation of the disrupted feedback loop.

- Model a combined nervous–endocrine feedback loop (eg thermoregulation including hypothalamus and hormones) and explain how it differs from a simple loop.