2.56 understand the origin of carbon dioxide and oxygen as waste products of metabolism and their loss from stomata of a leaf

2.56 •metabolic reactions include respiration and photosynthesis

                  •photosynthesis: 6CO2 + 6H20 = C6H12O6 + 6O2 + (energy)

                            •glucose is used for energy, oxygen is a waste, diffusing out the stomata

                

                   •respiration: C6H12O6 + 6O2 = 6CO2 + CH20 + (energy) 

                             •carbon dioxide is a waste, diffusing out the stomata