Study Guides

Unit Summary

This unit covers vaccines, medicines, and monoclonal antibodies for disease prevention and treatment. It explains aseptic techniques, medicine development, and antibody uses. The focus is on ethical considerations, risk evaluation, and societal impacts of scientific advances.

Lesson Summary

You will learn to explain what antibiotics are, and how they should be used to limit the spread of antibiotic resistance in bacteria.

Key Notes

• Antibiotics are medicines that can only be used to treat bacterial infections; they do not work against viruses.
• Some antibiotics work by stopping bacteria developing a cell wall.
• Bacteria can become resistant to antibiotics, and resistance can spread if antibiotics are not used correctly.
• Antibiotics must only be taken when they are prescribed by a doctor.
• Do not take antibiotics for the wrong reasons and always complete the prescribed course.

Vocabulary To Learn

• antibiotics: Antibiotics are substances that slow down or stop the growth of bacteria
• bacteria: Bacteria are single-celled prokaryotes.
• bacterial cell wall: The bacterial cell wall is made of murein, which is strong enough to withstand osmotic pressure while also allowing substances to pass through.
• antibiotic resistance: When bacteria mutate and become less susceptible to the action of antibiotics.

Common Mistakes To Avoid

• Pupils may think that antibiotics work on all pathogens.

3 Quick Questions (With Answers)

More Lessons In This Unit

• Development of new medicines Study Guide
• Monoclonal antibodies Study Guide
• The effect of antimicrobial substances on bacterial growth: analysis and conclusions Study Guide
• The effect of antimicrobial substances on bacterial growth: practical Study Guide