Carb loading (eating lots of carbohydrates) is a common practice among marathon and triathlon runners. How does carb loading increase a runner's endurance on a cellular level? Select two choices to support your answer the cellular respiration process slows down to allow the muscles to store the needed energy the mitochondria in the muscles generate energy through cellular respiration cells can perform cellular respiration without input from other organs or organ systems heat provided by the run give the body energy to make ATP the lungs support cellular respiration by providing oxygen needed to produce ATP from the carbohydrates

By carb loading the glucose stored as glycogen can be used to derive energy which increases a runner's endurance. Two choices that support the answer are

Mitochondria in the muscles generate energy through cellular respiration.

Lungs support cellular respiration by providing the oxygen needed to produce ATP from carbohydrates.

Explanation:

Carb loading is the process of increasing the content of carbohydrate in the diet to acquire energy for athletic activities. Excess glucose in the body is stored as glycogen in the liver as well as muscles. During high endurance physical activities the glycogen in the muscles is used to derive energy.

The glycogen gets converted to ATP by the process of cellular respiration. The mitochondria in the muscle cells perform the process of generating energy. The glycogen in liver is released into the blood stream when needed so as to maintain blood sugar levels. But the glycogen in muscles is used for giving energy to perform physical activities.