Starter quiz
- What is a gene?
- A biological catalyst.
- A short section of DNA. ✓
- A sub-cellular structure which surrounds the cell.
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- What process is used to create new cells for growth and repair in multicellular organisms?
- meiosis
- mitosis ✓
- fertilisation
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- What does obese mean?
- very underweight
- very overweight ✓
- healthy weight
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- Which of the following is not a lifestyle factor?
- drinking alcohol
- smoking
- genetic disease ✓
- using sunbeds
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- If smoking is a risk factor for developing lung cancer, which statement is true?
- Everyone who smokes will develop lung cancer.
- People who smoke have the same risk as non-smokers for developing lung cancer.
- People who smoke increase their chance of developing lung cancer. ✓
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- ______ is a chemical substance that carries the genetic information.
- 'DNA' ✓
Exit quiz
- What are tumours and cancer caused by?
- uncontrolled cell division ✓
- cell division suddenly stopping
- changes to the DNA of cells ✓
- the nucleus of cells dividing
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- Which statements are usually true for benign tumours?
- slow growing ✓
- invade surrounding tissue
- cancerous
- contained within a membrane ✓
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Which type of tumour is shown below?- malignant tumour ✓
- benign tumour
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- Match the lifestyle risk factor to the type of cancer is is linked to.
- UV radiation⇔skin cancer ✓
- viral infection⇔cervical and liver cancers ✓
- smoking⇔lung, mouth, bowel, stomach and cervical cancers ✓
- obesity⇔bowel, liver and kidney cancers ✓
- Other than lifestyle factors, risk factors for cancer can also be associated with ...
- 'genetics' ✓
- Which statements explain why viral infections can be considered lifestyle factors?
- HPV and Hepatitis B and C can be spread through unprotected sex. ✓
- Hepatitis B and C can be caused by drinking alcohol.
- Hepatitis B and C can be spread through sharing needles. ✓
- HPV can be caused by recreational drug use.
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Cancer is caused by uncontrolled cell growth and division which can lead to the formation of tumours.
- Not all tumours are cancerous; they can be benign or malignant.
- Benign tumours are usually contained within one area and do not invade surrounding tissues.
- Malignant tumours are cancerous, they invade surrounding tissues and can cause secondary tumours.
- Scientists have identified lifestyle and genetic factors that can increase the risk of developing cancer.
Common misconception
Pupils may think that all tumours are cancerous and dangerous.
Pupils are given very clear examples of the difference between benign and malignant tumours. The difference between the two is covered in the slide deck, check for understanding questions and practice tasks.
Keywords
Mitosis - A type of cell division that produces genetically identical cells.
Genes - Short sections of DNA that code for a specific characteristic or protein.
Tumour - A mass of cells that has been produced through uncontrolled cell division.
Benign - A tumour that is non-cancerous and contained to one area.
Malignant - A tumour that is cancerous and can spread.
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