Question

runners only have enough stored atp in their muscle cells to run for about five seconds. which answer correctly explains how the runners body adjusts to the longer distance, for example, a marathon (26.1 miles)? the runners body will convert stored fat molecules into energy. the runners body will create the needed energy by breaking down proteins. the runners body will supply the needed energy by producing starch. the runners body will produce the energy by activating the golgi apparatus.

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: The body can convert stored fat (triglycerides) into energy (ATP) through metabolic processes like beta - oxidation. This is a valid way the body gets energy for long - duration activities like a marathon.
• Option 2: Proteins are not the primary source of energy for long - term exercise; they are more for structural and functional roles in the body, and breaking down proteins for energy is not the main mechanism here.
• Option 3: The body does not produce starch; starch is a carbohydrate obtained from the diet, and the body's main carbohydrate storage is glycogen, not starch production for energy.
• Option 4: The Golgi apparatus is involved in processing and packaging proteins, not in energy production. So it has no role in producing energy for running.

Answer:

The runner’s body will convert stored fat molecules into energy.