aerobic and anaerobic

• RESPIRATION is a set of metabolic reactions that take place in the cells of organisms.
• Respiration is a chemical process that TRANSFERS ENERGY by breaking down GLUCOSE.
• Respiration is an EXOTHERMIC process, meaning it release energy to the surroundings, which can be observed as HEAT.
• uses of respiration:


  • KEEPING WARM and maintaining a constant warm body temperature.
  • Contracting muscles for MOVEMENT.
  • Carrying out chemical reactions to build LARGER MOLECULES from smaller ones 
• AEROBIC RESPIRATION:


  • Occurs with OXYGEN and is the most EFFICIENT way to release energy from glucose.
  • Takes place CONTINUOUSLY in animals and plants, within the MITOCHONDRIA.
• aerobic respiration 


  • Glucose + Oxygen → Carbon dioxide + Water
  • C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
• ANAEROBIC RESPIRATION:


  • Happens when there is NOT ENOUGH OXYGEN available, such as during intense EXERCISE.
  • This form of respiration does NOT produce as much energy because the oxidation of glucose is INCOMPLETE.
• anaerobic in MUSCLE cells, glucose is converted into LACTIC ACID.


  Glucose → Lactic acid
• anaerobic in PLANTS and YEAST, glucose is converted into ETHANOL and carbon dioxide.

  Glucose → Ethanol + Carbon dioxide
• uses of fermentation: yeast

  • making alcoholic drinks, ethanol produced makes alcoholic drinks such as BEER and WINE.
  • bread making, carbon dioxide released from the process causes the bread to RISE.