Biology

Biology

1. Diet

   • Carbohydrates
     • Converts to mainly sugars
       • Fuels cells
   • Protein
     • Building block
       • Bones
       • Muscles
       • Skin
       • Blood
     • Grows and repairs cells
   • Lipids
     • Helps body absorb vitamins A, D and E
   • Vitamins
     • Keeps the body running
   • Water
     • Need it to survive
     • 50 - 60% of bodies are water
     • Need to replace 2.4 liters every day
   • Fibres
     • Helps digestive system

2. Keeping healthy

   • Metabolic rate
     • Speed of chemical reactions in our bodies
       • How quickly food is used
     • Males have a higher Metabolic mate
       • Have more muscles
     • Exercise
       • Higher metabolic rate
         • Higher metabolic rate if your exercise

3. How to measure energy in food

   • Burn food
     • Burn the food until the temperature wont change
       • The shortest time means it has more energy

4. Microbs

   • Pathogen
     • A microorganism that causes diseases
   • Sammelwies
     • Cured childbed fever
     • Stopped many other pathogens

5. Antibiotics

   • Definitions
     • Antibiotic
       • Only kills bacterial cells
     • Antibody
       • A chemical produced by white blood cells to kill foreign cells
   • Antiseptic
     • Kills all cells

6. Extention node

   • Edward jenner
     • Info
       • Stopped cowpox
       • Lived in Berkeley
       • Used cowpox to stop smallpox
     • Cured smallpox by rubbling pus from cowbox on a boys arm over cuts
       • The boy never got smallpox after being cured even after having some rubbed on his arm
     • Vacinations
       • Puts a weak pathogen in your body which the white blood cells cure and remember how to cure it in the future
       • MMR jab prevents measles, mumps and rubella
   • Antibiotic resistance
     • Medics can help lower resistant bacteria by using less antibiotics
     • Pendemic
       • More cases of diseases in more than one country
     • Epidemic
       • More cases of infection in one country
   • Nerves
     • Receptor > Sensory neuron > C.N.S > Motor neuron > Effector
       • Stimulus > Receptor > C.N.S > Effector > Effect
         • Pick up hot thing > Heat receptor in hand > Spine > Muscle in hand > drop hot thing
           • C.N.S = Spine or brain
           • Effector = Muscle gland
   • Nerves and hormones
     • Plants are sensitive to light (phototropism)
       • Plants will always grow upwards towards the light
         • Plant coordinated by the auxin
   • Drugs
     • Medical
       • Calpol
       • Allergy pills
     • Legal
       • Antibiotics
       • Legal steroids
       • Antihistamine
     • Illegal
       • Heroine
       • Cannabis
       • Speed