Final answer:
Anaerobic respiration begins with glycolysis, does not use oxygen, and produces lactic acid as a byproduct, with the accumulation of lactic acid acting as the limiting factor.
Step-by-step explanation:
The anaerobic system begins with glycolysis, does not use oxygen, and leaves lactic acid as a toxic byproduct.
The limiting factor in the anaerobic respiration process is the accumulation of lactic acid.
Anaerobic respiration, also known as fermentation, occurs when oxygen is limited or absent, allowing cells to produce ATP.
In this pathway, pyruvate from glycolysis is converted into lactic acid, which allows for the regeneration of NAD+ essential for glycolysis to continue.
This process is a crucial energy source when quick energy is required for short periods, such as during intensive exercise, yet it is less efficient compared to aerobic respiration, which fully breaks down glucose into carbon dioxide and water in the presence of oxygen.