Bioenergetics

• Photosynthesis order

  1. Plant takes carbon dioxide and water into the leaf
  2. Light energy then absorbed by chlorophyl in leaf
  3. Light energy then used to convert CD and water into glucose
  4. Oxygen is also produced in this reaction
• Photosynthesis equation 


  Carbon dioxide + water -light&chlorophyll- glucose + oxygen

  CO2+H2O- C6H12O6 + O2
• Photosynthesis factors

  When light intensity is 0, the rate of photosynthesis is 0

  More light means higher rate of photosynthesis

  Light intensity can be a limiting factor when photosynthesis is not as fast as it could be

  High temperature means higher rate
• Glucose in photosynthesis

  Releases energy in respiration

  Produces starch which is stored

  Cellulose made by glucose

  Produces amino acids (protein)
• Determine limiting factor 


  FACTORS- co2, temperature, chlorophyl, light

  increase these factors and see which works
• Respiration

  Exothermic reaction, releases energy

  Takes place continuously in all living cells
• Aerobic respiration

  Glucose is reacted with oxygen, which releases energy

  glucose + oxygen- carbon dioxide + water

  C6H12O6 + O2 -CO2 + H2O
• Anaerobic respiration 


  Muscles- glucose converted into lactic acid

  DOES NOT require oxygen

  Releases less oxygen than aerobic

  Plant cells- glucose converted to ethanol + carbon dioxide
• Lactic acid

  When there is too much, lactic acid is taken from the muscles into the blood which transports it to the liver to be converted back to glucose
• Oxygen dept

  Amount of extra oxygen the body needs after exercise to deal with lactic acid
• Metabolism 


  The amount of all chemical reactions in a cell or the body

  1 glycerol + 3 fatty acids= lipid

  Spare protein is made into urea- excreted by kidneys