- T2D management targets blood glucose, insulin resistance and complication risk.
- Lifestyle management can improve insulin sensitivity but is shaped by social context.
- Metformin reduces liver glucose output and improves insulin sensitivity.
- Future research directions must be evaluated, not simply listed.
Year 12 Biology
Module 8 · IQ3
⏱ ~45 min
Practice bank · 3 Short Answer
Lesson 14 of 21
Treating One Non-infectious Disease: Type 2 Diabetes
The 2017 syllabus asks you to investigate treatment, management and future research for one non-infectious disease. This lesson uses Type 2 diabetes to connect mechanism, management choices and evidence.
Today's hook: If Type 2 diabetes involves insulin resistance, why is treatment not just "give more insulin" for every patient?
0/5TASKS
Warm up first
Three quick questions from earlier lessons. Pulling old material back to mind before you learn something new makes the new material stick better, so this is not busywork.
Worksheets
Practise this lesson
Four printable worksheets that build from the foundations up to exam-style questions, start at whatever level suits you.
Lesson map
Mechanism -> management -> future directions
Use one disease case study so the treatment evaluation has a clear biological anchor.
- 1Recall the disease mechanism.T2D begins with insulin resistance and can progress to beta-cell exhaustion.
- 2Match treatment to mechanism.Lifestyle, metformin, monitoring and escalation target different points.
- 3Evaluate future research.Judge benefits, limits, access and evidence quality.
Know what matters
- Monitoring uses HbA1c and blood-glucose data to guide escalation.
- Treatment plans often combine approaches rather than choosing one only.
- Complication prevention includes blood pressure, lipids and kidney monitoring.
- GLP-1 receptor agonists, SGLT2 inhibitors and cardiovascular/renal outcomes.
- Bariatric surgery and remission in some patients.
- Precision medicine and beta-cell protection as research directions.
0
Predict first: what should treatment target?
connectA patient has high blood glucose because body cells respond poorly to insulin. Which target best matches the mechanism?
1
Key vocabulary, translated
vocabManagementongoing actions that control disease effects
Treatmentintervention that targets a disease mechanism or symptom
Metformindrug that lowers liver glucose output and improves insulin sensitivity
HbA1cblood test showing average glucose over about three months
Future directionresearch path that may improve prevention, treatment or monitoring
True or false: management can include monitoring and behaviour change, not only medication.
2
Match each action to the mechanism
applyLifestyle support
Nutrition, physical activity, sleep and weight management can improve insulin sensitivity and reduce glucose load.
Metformin
Reduces glucose release from the liver and improves insulin response in tissues.
Monitoring
HbA1c, kidney checks, blood pressure and lipids help prevent long-term complications.
Build a management plan+7 XP
Put the treatment reasoning in order.
- Choose management actions that target those mechanisms.
- Identify the disrupted homeostatic mechanism.
- Monitor outcomes and complication risk.
- Name the disease consequences that must be reduced.
3
Evaluate future research, not just novelty
explainFuture directions for T2D may include better glucose-monitoring systems, drugs that protect beta cells, precision treatment based on risk profiles, or earlier prevention. A strong evaluation considers effectiveness, safety, cost, access and quality of evidence.
HSC exam move
For this syllabus dot point, always link the treatment or research direction back to the disease mechanism and finish with a judgement about usefulness or limitation.
4
Choose your route
differentiateUse the frame to link one treatment to one mechanism.
Explain why two management approaches are often combined.
Evaluate one future research direction for T2D.
5
Exit check
retrieveMemorise
Insulin resistance, metformin, HbA1c, management, future direction.
Understand
Treatment is chosen because it targets a disease mechanism or complication risk.
Apply
Build a treatment/management plan for one disease example.
Avoid
Do not present a list of therapies without explaining how they work.
01
Multiple Choice
+5 XP
A fresh set drawn from this lesson's question bank, feedback shown immediately. +5 XP per correct · +25 XP all correct
Pick your answer, then rate your confidence, that tells the system what to drill next.
02
Short Answer, 15 marks
+5 XP
ApplyBand 4(4 marks) 1. Explain how metformin and regular HbA1c monitoring contribute to the management of Type 2 diabetes. Distinguish treatment from monitoring in your answer.
AnalyseBand 4–5(5 marks) 2. Compare lifestyle modification and metformin for managing Type 2 diabetes. Explain how each affects blood-glucose regulation, and give one advantage and one limitation of each approach.
EvaluateBand 5–6(6 marks) 3. Evaluate a management plan for a person with Type 2 diabetes that uses lifestyle change, metformin and HbA1c monitoring. Explain why the strategies are combined, how success would be judged and when escalation may be required.
Show all answers
Multiple choice
MC answers and full explanations are shown inline as you complete each question. Use the retry button to attempt a fresh set from the lesson bank.
Worked example: matching diabetes strategies to purpose
Lifestyle change: aims to reduce modifiable drivers of insulin resistance through activity, nutrition and, where appropriate, weight change.
Metformin: reduces glucose release by the liver and improves tissue response to insulin, helping lower blood glucose.
HbA1c monitoring: does not treat diabetes. It estimates average blood glucose over recent months and supplies evidence for evaluating the plan.
Escalation: another medicine or insulin may be needed if targets are not met, symptoms worsen or insulin production declines despite the current plan.
Worked example: evaluating a combined plan
Why combine strategies? Lifestyle change and metformin act through different but complementary mechanisms. The combination may improve glucose control more than either alone, while monitoring shows whether the real-world plan is working.
How to judge the plan: use an HbA1c trend, symptoms, side effects and the person's ability to sustain the plan. A biologically effective option is not useful if it is inaccessible or cannot be followed safely.
Short Answer Model Answers
SA1 (4 marks): Metformin is a treatment: it reduces glucose output by the liver and improves the response of tissues to insulin, lowering blood glucose [2]. HbA1c is monitoring: it estimates average blood glucose over the previous two to three months and shows whether management is working [1]. It does not lower glucose itself; clinicians use the trend to continue, adjust or escalate treatment [1].
SA2 (5 marks): Lifestyle change can increase activity, reduce visceral fat and improve insulin sensitivity, so cells take up glucose more effectively [1]. It offers broad cardiovascular and metabolic benefits but can be difficult to access or sustain [1]. Metformin reduces liver glucose output and improves insulin sensitivity [1]; it is effective and widely used, but side effects or contraindications may limit use and it does not remove every underlying risk [1]. The approaches are complementary because they act through different pathways and can be adjusted to the individual [1].
SA3 (6 marks): The combined plan is biologically reasonable because lifestyle change addresses modifiable drivers of insulin resistance while metformin reduces hepatic glucose output and improves insulin response [2]. HbA1c supplies repeated evidence of average glucose control, allowing the plan to be evaluated rather than assumed effective [1]. Success would include an improving HbA1c trend, achievement of an individual target, manageable side effects and sustainable behaviour change [1]. Adherence, cost, access, other health conditions and patient preferences affect the real-world result [1]. If targets remain unmet, symptoms worsen or beta-cell function declines, the plan should be reviewed and another medicine or insulin considered. Overall, combination and monitoring are strengths because treatment can be adapted over time [1].
Check what actually stuck
Take the full module quiz
quiz
A full module quiz covering every lesson in this module, not just this one. Set aside a decent block of time and treat it like a real assessment.
Start the module quiz →Race Through Type 2 Diabetes Management!
Answer questions on insulin resistance, lifestyle strategies, metformin, HbA1c and treatment escalation. Pool: lessons 1–14.
How did your thinking change?
Return to the Type 2 diabetes case from the start. A strong management plan connects the disrupted glucose-regulation mechanism to treatment, uses monitoring to test progress and changes when the evidence shows that the current plan is insufficient.
- Treatment: explain how lifestyle change and metformin affect glucose regulation.
- Monitoring: explain what HbA1c measures and why it cannot be described as a treatment.
- Decision: state what evidence would support continuing, changing or escalating the management plan.