Bioenergetics

• Anaerobic respiration in plants is also known as fermentation.
• During anaerobic respiration in plants, glucose is converted into ethanol and carbon dioxide.
• Which chemical, apart from glucose, is used in aerobic respiration?

  Ethanol
• Does anaerobic respiration release more, less, or the same amount of energy as aerobic respiration?

  Less - it is a much less efficient process
• In the process of metabolism, energy from cellular respiration is used to synthesise new molecules.
• Glucose is used for making starch or fat to store energy, or for respiration, making cellulose or making amino acids for proteins.
• Photosynthesis is increased by light intensity, carbon dioxide concentration and temperature.
• Starch granules provide a plant with a store of food. The starch can be converted into glucose.
• Photosynthesis is an endothermic reaction
• Glucose can be converted into insoluble starch, or to produce fat or oil for storage
• Glucose can be used to produce cellulose or to produce amino acids for protein synthesis
• Respiration is an exothermic reaction
• Equation for anaerobic respiration in plant and yeast cells


  glucose = ethanol + carbon dioxide
• Anaerobic respiration in yeast cells is called fermentation
• Anaerobic respiration equation 


  Glucose → lactic acid
• Glucose and nitrate ions form amino acids, which are used to synthesise proteins
• Excess protein is broken down into urea for excretion