5.2 Respiration

• Which type of respiration requires oxygen?

  Aerobic
• Which type of respiration does not require oxygen?

  Anaerobic
• Which type of respiration produces less ATP?

  Anaerobic
• What is Glycolysis?

  Glycolysis is the splitting of one molecule of glucose (6 carbon) into two smaller molecules of pyruvate (3 carbon).
• Where does glycolysis occur?

  Glycolysis occurs in the cytoplasm.
• Glycolysis is the first stage of aerobic and anaerobic respiration and doesn't need oxygen to take place - it's an anaerobic process.
• Describe the process of glycolysis.


  Glucose is phosphorylated using ATP to produce triose phosphate which is oxidised into pruvate. During this process, there's a net gain of ATP (4 produced 2 used up) and NAD is reduced to NADH.