Question

When athletes run long distances, their muscles become fatigued due to a lack of oxygen. Which process helps athletes generate more energy to continue running? SELECT TWO ANSWERS.
Responses

Anaerobic respiration
Anaerobic respiration

Aerobic respiration
Aerobic respiration

Lactic acid fermentation
Lactic acid fermentation

Photosynthesis

Answer 1

The two processes that help athletes generate more energy to continue running, especially when they are experiencing muscular fatigue due to a lack of oxygen, are:

1. **Anaerobic respiration**
2. **Lactic acid fermentation**

Aerobic respiration primarily relies on oxygen, and photosynthesis is not relevant to human energy generation. Therefore, the correct selections are anaerobic respiration and lactic acid fermentation.