Advanced Emergency Medical Technician (AEMT) Practice Test

The metabolism that creates large amounts of carbon dioxide and lactic acid but generates little energy is called:

1. Aerobic

2. Hyperoxic

3. Anaerobic

4. Homeostatic

The correct answer is: Anaerobic

The correct answer is the metabolism that creates large amounts of carbon dioxide and lactic acid but generates little energy is anaerobic metabolism. This process occurs in the absence of oxygen and primarily results in the conversion of glucose into energy, which is less efficient compared to aerobic metabolism. During anaerobic metabolism, glucose is broken down through a process called glycolysis, leading to the production of pyruvate. When oxygen supply is inadequate, pyruvate is then converted into lactic acid, causing an accumulation of lactic acid in the muscles. This condition is often associated with strenuous exercise or situations where oxygen delivery is compromised, resulting in increased production of carbon dioxide as a byproduct. The energy yield from anaerobic metabolism is significantly lower than that of aerobic pathways, making it a quick source of energy for short bursts of activity but not sustainable for prolonged exertion. Understanding this process is critical for AEMTs to assess patient conditions related to metabolic states, especially in emergencies involving inadequate oxygenation.