Science>Year 9>Unit 1>Checkpoint 3

Checkpoint 3

This checkpoint tests Block C: antibiotics and antivirals, antimicrobial resistance, non-infectious disease, cancer, and technology against disease.

SC5-DIS-03Lessons 11-1510 MC3 Short AnswerCheckpoint 3 of 4
CP3

Coverage

This checkpoint assesses your understanding of Block C.

Lesson 11

Antibiotics and antivirals: how they work; proper use and misuse.

Lesson 12

Antimicrobial resistance: superbugs, MRSA, natural selection, One Health.

Lesson 13

Non-infectious disease: CVD, diabetes, obesity, genetic, environmental.

Lesson 14

Cancer: uncontrolled cell division, causes, detection, treatment.

Lesson 15

Technology: PCR, rapid tests, imaging, telehealth, AI in medicine.

Checkpoint Standard Strong answers use precise scientific language and connect concepts to real-world examples.
MC Score
0 / 10
SA Score
0 / 12
Q

Test Your Understanding

UnderstandBand 3

1. Antibiotics are effective against:

AViruses only
BBacteria only
CAll pathogens
DCancer cells
UnderstandBand 3

2. Why is it important to finish a full course of antibiotics?

ATo save money on future prescriptions
BTo ensure all bacteria are killed and reduce resistance
CBecause doctors require it by law
DTo prevent allergic reactions
UnderstandBand 4

3. Antimicrobial resistance develops through:

ABacteria intentionally adapting
BNatural selection favouring resistant strains
CDoctors prescribing wrong doses
DPatients refusing treatment
UnderstandBand 4

4. Which of the following is a non-infectious disease?

ATuberculosis
BInfluenza
CType 2 diabetes
DCOVID-19
UnderstandBand 3

5. Cancer is best described as:

AAn infection by a virus
BUncontrolled division of abnormal cells
CA genetic disorder present at birth
DAn autoimmune attack on tissues
ApplyBand 4

6. A patient is prescribed broad-spectrum antibiotics for a viral infection. What is the main problem with this?

AAntibiotics cannot kill viruses and may promote resistance
BThe patient will develop cancer
CViral infections always require surgery
DBroad-spectrum antibiotics are too expensive
UnderstandBand 4

7. The One Health approach to antimicrobial resistance recognises that:

AOnly human health matters
BHuman, animal, and environmental health are linked
CResistance only occurs in hospitals
DAntibiotics should be banned in all settings
UnderstandBand 4

8. Which technology uses DNA amplification to detect tiny amounts of pathogen genetic material?

AX-ray imaging
BPCR test
CBlood pressure monitor
DMRI scan
ApplyBand 4

9. A country has high rates of cardiovascular disease. Which public health strategy is most appropriate?

AMass vaccination
BPromoting healthy diet and exercise
CQuarantine infected people
DDeveloping new antibiotics
AnalyseBand 5

10. A hospital notices that MRSA infections are increasing despite strict hygiene. Which explanation is most consistent with the science of antimicrobial resistance?

AHygiene no longer works at all
BResistant strains have been selected by antibiotic use and now dominate
CMRSA is a new virus that hygiene cannot stop
DPatients are not taking their medications

Short Answer Questions

UnderstandBand 4

11. Explain how natural selection leads to antibiotic resistance. Include the roles of mutation, selection pressure, and reproduction in your answer. 4 MARKS

Answer in your book.
ApplyBand 4

12. Compare the public health approaches needed to reduce cardiovascular disease and malaria in a population. Explain why the strategies differ. 4 MARKS

Answer in your book.
AnalyseBand 5

13. Evaluate the claim that medical technology will soon eliminate all disease. Consider at least two types of technology and the challenges they face. 4 MARKS

Answer in your book.

Review & Reflect

✓ I can explain...

  • How antibiotics and antivirals work and why they differ
  • How natural selection drives antimicrobial resistance
  • Why non-infectious diseases require different prevention strategies
  • What cancer is and how it is detected and treated
  • How modern technology improves disease diagnosis and treatment

⚠ I need to review...

  • The difference between narrow-spectrum and broad-spectrum antibiotics
  • How horizontal gene transfer accelerates resistance
  • The social determinants of non-infectious disease
  • The ethical considerations of AI in medical diagnosis

Mark checkpoint as complete

Tick when you have finished all questions and reviewed your answers.