Year 10 - Science
Errors in cell division and cancer: beyond the basics
Cell division: mitosis and meiosis
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit covers mitosis and the cell cycle in growth, cancer as uncontrolled cell division, and the role of mutations in genetic variation. It explains meiosis in gamete formation and chromosome reduction. The emphasis is on recording observations and interpreting patterns to draw conclusions.
Lesson Summary
You can describe cancer including benign and malignant tumours and explain how mutations can cause cancer.
Key Notes
- Cancer is caused by uncontrolled cell growth and division which can lead to the formation of tumours.
- 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.
- Mutations can cause changes in DNA; this alters the nucleotide sequence and genetic code
Vocabulary To Learn
- mutation: A change in the nucleotide sequence of DNA that can cause mutated genes.
- 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.
Common Mistakes To Avoid
- All tumours are cancerous and dangerous.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Cancer is caused by uncontrolled cell growth and division which can lead to the formation of tumours. Benign tumours are usually contained within one area and do not invade surrounding tissues.
2. Define this scientific word and use it in context. 'mutation'
A change in the nucleotide sequence of DNA that can cause mutated genes. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: All tumours are cancerous and dangerous. Correction: Students 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.
More Lessons In This Unit
- Errors in cell division and cancer: basics Study Guide
- Growth in multicellular organisms Study Guide
- Making gametes: meiosis Study Guide
- Observing mitosis in plant cells using a light microscope Study Guide
- Observing mitosis in plant cells using a light microscope (including PMAT) Study Guide
- The cell cycle and cell division: mitosis Study Guide
- The cell cycle and cell division: mitosis (including PMAT) Study Guide
- The structure of DNA: including nucleotides Study Guide
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