bio energetics

• photosynthesis

  exothermic reaction

  equation - 6co2 + 6h2o ~ c6h12o6 +6o2
• rate of photosynthesis

  1. temperature increases
  2. co2 conc increases
  3. chlorophyll increases
• required practical for photosythesis

  pondweed
• uses of glucose in photosynthesis

  1. respiration
  2. produce cellulose to strengthen cell walls
  3. combine with nitrates to form amino acids which produce proteins
• aerobic respiration

  • uses o2
  • yields the most energy
  • glucose + oxygen ~ carbon dioxide + water
• anaerobic respiration

  • happens when there isnt enough oxygen
  • last resort
  • in animals ~ glucose ~ lactic acid
  • in plants an yeast (fermentation) glucose ~ ethanol + carbon dioxide
• body response to exercise

  heart rate increases

  breathing rate increases

  breathing volume increases
• metabolism

  sum of all the reactions in the cell or body
• examples of metabolic reaction

  glucose and nitrate ions forming amino acids which form proteins

  reaction in photosynthesis