| Front | Explain what environmental factors increases your risk of cancer and give an example of how you can inherit a high risk of cancer |
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| Back | UV rays penetrate skin cell membranes and cause mutations in the nuclei by altering the bases (potentially in tumour suppressor genes) and skin cells can metastasize (spread elsewhere) Viruses replicate by transferring by transferring their DNA (which may contain oncogenes) into human cell DNA - cervical cancer can be caused by the HPV virus Diets high in fruit and vegetables are good because they contain antioxidants which neutralise free radicals which can damage DNA causing cancerous mutations Smoking is bad because tar is carcinogenic as it lodges in the bronchi causing DNA damage in epithelial cells increasing risk of lung cancer You can inherit a defective BRCA1 gene (a DNA repair gene) which makes a person more susceptible to breast cancer |
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