Biology - diseases - Mindmap in GCSE Biology

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Biology - Diseases
- Non Infectious diseases
  - Not caused by parasite invading the body.
  - Vitamin deficiency(scurvy), mineral deficiency(anaemia), body disorder (diabetes, cancer), genetic inheritance (red-green colour blindness.)
- Cancer
  - Cells keep on dividing to form an abnormal mass called a tumour.
  - To help prevent it-no smoking, sunbathe a little, good helthy lifestyle, avoid red meat and prcessed food, not too much alcohol, regular exercise, 5 a day.
  - Tumours - benign=does not spread through the body, malignant=spreads through the body causing more cells to grow.
  - Pathogen-microorgansims that cause disease.
    - Damage cells and release chemicals called toxins. eg-fungi, bacteria, viruses, protoza.
    - Pathogens
- Spreading
  - Malaria is spread by vector from human to human
    - Caused by mosquito bite - prevention=mos. nets, insect repellent, draining stagnant water, insecticides to kill mosq.
Vitamin deficiency(scurvy), mineral deficiency(anaemia), body disorder (diabetes, cancer), genetic inheritance (red-green colour blindness.)