Asked in Premeth past paper pool — BiologyModerate

The equation that summarises the conversion of glucose into lactic acid during anaerobicrespiration is:

Correct answer: A. C6H12O6 → 2 C3H6O3

  • A. C6H12O6 → 2 C3H6O3
  • B. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
  • C. C6H12O6 → 2 C2H5OH + 2 CO2
  • D. C6H12O6 → 6 CO2 + 6 H2O

Explanation

The correct equation for the conversion of glucose into lactic acid during anaerobic respiration is C6H12O6 → 2 C3H6O3. This accurately reflects the process in which one molecule of glucose is converted into two molecules of lactic acid under anaerobic conditions, commonly occurring in muscle cells during intense exercise when oxygen is limited.

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About Cellular Respiration

Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.

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