Starter quiz
Label the parts of the bacterial cell.- A⇔flagellum ✓
- B⇔cell wall ✓
- C⇔cytoplasm ✓
- Plant cells and bacterial cells have a cell wall. Select the function of the cell wall.
- provides support and structure ✓
- controls the activities of the cell
- contains chlorophyll for photosynthesis
- is the site of respiration
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A change in the sequence of nucleotide bases in the DNA of the genome is called a ______.- gene
- double helix
- mutation ✓
- chromosome
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- What is a pathogen?
- a microorganism that causes disease ✓
- any organism that causes disease
- an insect that damages plants
- a bacterium that lives in your digestive system
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- Which diseases are caused by bacteria?
- cancer
- flu
- gonorrhoea ✓
- common cold
- tuberculosis ✓
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- Do bacteria reproduce asexually or sexually?
- asexually ✓
- sexually
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Exit quiz
- True of false? Antibiotics will cure the flu.
- True
- False ✓
- Some antibiotics, including penicillin, work by preventing the formation of the bacterial ______.
- 'cell wall' ✓
- True or false? Antibiotic resistance means that the bacteria are immune to the antibiotic.
- True
- False ✓
- Who is incorrect?
- Antibiotics can cure any bacterial infection. ✓
- Antibiotic resistance is a major health issue.
- You can develop antibiotic resistance. ✓
- Antibiotics are a drug.
- Different antibiotics should be used to treat different infections.
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- How can we reduce the spread of antibiotic resistance?
- Only use antibiotics when necessary. ✓
- Use specific antibiotics to treat specific infections. ✓
- Never take antibiotics.
- Finish the full course of antibiotics. ✓
- Stop taking antibiotics when you feel better.
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- Starting with a mutation arising, put these steps in order to show how antibiotic resistance develops.
- 1⇔A random mutation takes place in the DNA of a bacterium.
- 2⇔The mutation gives the bacterium resistance to the antibiotic.
- 3⇔When the bacterium reproduces it passes on the mutation to the next generation.
- 4⇔Many bacteria are now resistant to the antibiotic.
Worksheet
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Lesson Details
Key learning points
- 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.
Common misconception
Pupils may think that antibiotics work on all pathogens.
Antibiotics only kill bacteria. Antibiotics can only kill certain bacteria and so the doctor will prescribe the correct one.
Keywords
Antibiotics - Antibiotics are substances that slow down or stop the growth of bacteria
Bacteria - Single celled prokaryotes.
Cell wall - Made of murein which is strong enough to withstand osmotic pressure but also allow substances to pass through.
Antibiotic resistance - When bacteria mutate and become less susceptible to the action of antibiotics.
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