Unit 1

Unit 1

1. Healthy diets

   • A healthy diet is a right balance of foods.
   • Building up energy
     • Carbohydrates
     • Fats
     • Proteins
   • Mineral ions and vitamins keep the body healthy
   • Exercise regularly
     • Increases metabolic rate
   • Obesity
     • Type 2 diabetes
   • Anorexia
     • Too little food
     • Malnourished

2. Pathogens

   • Cause infectious diseases
   • Tiny microorganisms
     • Bacteria
       • Enter text here
     • Viruses
       • Produce toxins
         • Make you feel ill
       • Small and reproduce inside your cells
         • Damage to the cells make you feel ill
   • Infection
     • Transferred from person to person
       • Semmelweis
     • WASH YOUR HANDS

3. Medicines

   • Relieve symptoms of disease but do NOT kill the pathogens
     • Pathogens are destroyed by the white blood cells
   • Bacteria
     • Can be grown on agar jelly
       • A gel made from algae, which provides an ideal growth medium