Question

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

Answer 1

Carb loading increases a runner's endurance by maximizing glycogen storage in the muscles, which is then used to produce ATP through cellular respiration, a process supported by oxygen from the lungs.

Step-by-step explanation:

Carb loading, or the practice of eating lots of carbohydrates, is a strategy used by marathon and triathlon runners to increase their endurance. On a cellular level, carb loading works by maximizing the storage of glycogen in the muscles, which can then be quickly mobilized to meet the energy demands during endurance activities. The mitochondria within muscle cells generate energy through cellular respiration, converting the stored glycogen back into glucose and then into ATP, the primary energy currency of the cell. Additionally, the lungs support this process by providing oxygen necessary for aerobic respiration, enabling the efficient production of ATP from carbohydrates. Hence, carb loading ensures that there is an ample supply of glycogen, ensuring that the muscles have a sustained energy reserve to draw upon during prolonged exercise.

Answer 2

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.

Step-by-step 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.