Bioenergetics

• photosynthesis produces glucose using light (co2 and water into oxygen and glucose)

  takes place in chloroplasts from the environment by light
• photosynthesis is endothermic
• Word equation:

  carbon dioxide + water --light--> glucose + oxygen
• Symbol Equation:

  6CO2 + 6H20 --light--> C6H1206 + 602
• Plants use glucose for respiration, making cellulose,amino acids,stored as oils or fats,or stored as starch
• Rate of photosynthesis is affected by: Light intensity, Temperature, CO2 concentration
• Any of these three factors can become the limiting factor - stopping photosynthesis from happening any faster.
• at night,light is the limiting factor

  in winter its the temperature

  if its warm and bright enough,CO2 is usually the limiting factor

  chlorophyll can also be a limiting factor of photosynthesis
• amount of chlorophyll in a plant can be affected by disease (e.g. infection with tobacco mosaic disease) or environmental stress,such as lack of nutrients. factors can cause chloroplasts to become damaged or to not make enough chlorophyll. rate of photosynthesis is reduced