This key facts covers Risk Factors for Cancer within Cancer and Cell Division Control for GCSE Biology. Cancer development, cell cycle control mechanisms, tumor formation, risk factors, prevention methods, and treatment approaches It is section 12 of 18 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Risk Factors for Cancer
Environmental Carcinogens
- Tobacco smoke: Contains over 70 known carcinogens
- UV radiation: From sun exposure, causes skin cancer
- Ionizing radiation: X-rays, nuclear radiation
- Chemical exposures: Asbestos, benzene, formaldehyde
- Infectious agents: Some viruses, bacteria, parasites
Lifestyle Factors
- Diet: High-fat, low-fiber diets increase risk
- Alcohol: Increases risk of liver, breast, and other cancers
- Physical inactivity: Linked to increased cancer risk
- Obesity: Associated with multiple cancer types
Genetic Factors
- Inherited mutations: BRCA1/BRCA2 for breast cancer
- Family history: Increased risk if relatives affected
- Age: Cancer risk increases with age
Practice questions for Cancer and Cell Division Control
In a healthy cell, cell division is controlled by:
Explain the difference between benign and malignant tumors.
Quick recall flashcards
Name three environmental carcinogens.
Tobacco smoke, UV radiation from sunlight, and asbestos fibers. (Also accept: ionizing radiation, benzene, formaldehyde, etc.)
What is cancer?
Cancer is a group of diseases involving uncontrolled cell division, where cells divide continuously without normal restrictions.