Reactants:
* Glucose (C6H12O6): The primary fuel source for cellular respiration.
* NAD+: An electron carrier molecule that is reduced during the process.
Products:
* Lactic Acid (C3H6O3) or Ethanol (C2H5OH): These are the final electron acceptors in anaerobic respiration, depending on the organism.
* ATP (adenosine triphosphate): The energy currency of the cell, produced in smaller quantities compared to aerobic respiration.
* NADH: The reduced form of NAD+, which is oxidized during the process.
Overall Equation (Lactic Acid Fermentation):
C6H12O6 → 2 C3H6O3 + 2 ATP
Overall Equation (Alcoholic Fermentation):
C6H12O6 → 2 C2H5OH + 2 CO2 + 2 ATP
Key Differences:
* Anaerobic respiration produces less ATP than aerobic respiration (only 2 ATP per glucose molecule).
* Anaerobic respiration does not require oxygen and can occur in environments without it.
* Anaerobic respiration produces different byproducts depending on the organism and metabolic pathway (lactic acid or ethanol).
Note: While anaerobic respiration is less efficient than aerobic respiration, it is crucial for certain organisms and cells that live in oxygen-deprived environments. It also plays a role in activities like muscle exertion, where oxygen supply is limited.
