To prepare for the cross-country meet, a skier decides to significantly increase the amount of carbohydrates in his diet (a technique also known as carbohydrate loading). Why might this be beneficial to the cross-country skier? Check all that apply. Carbohydrates are used to build actin filaments in the myofibrils, which increases muscle bulk and performance. The liver can store copious amounts of ingested carbohydrates as glycogen, which can then be slowly broken down to release the glucose needed to fuel aerobic respiration. As long as oxygen is present, the glucose stored in the ingested carbohydrates can provide a steady stream of ATP, thus meeting the demands of prolonged periods of exercise. Eating more carbohydrates leads to more glycogen stores in muscles, which then equates to larger energy stores for short, explosive bouts of energy use.

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25-03-2020
Biology

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To prepare for the cross-country meet, a skier decides to significantly increase the amount of carbohydrates in his diet (a technique also known as carbohydrate loading). Why might this be beneficial to the cross-country skier? Check all that apply. Carbohydrates are used to build actin filaments in the myofibrils, which increases muscle bulk and performance. The liver can store copious amounts of ingested carbohydrates as glycogen, which can then be slowly broken down to release the glucose needed to fuel aerobic respiration. As long as oxygen is present, the glucose stored in the ingested carbohydrates can provide a steady stream of ATP, thus meeting the demands of prolonged periods of exercise. Eating more carbohydrates leads to more glycogen stores in muscles, which then equates to larger energy stores for short, explosive bouts of energy use.

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eyitbay eyitbay · Answer 1 · 2020-03-29T11:42:03+02:00

Answer:

As long as oxygen is present, the glucose stored in the ingested carbohydrates can provide a steady stream of ATP, thus meeting the demands of prolonged periods of exercise.

Explanation:

This is the strategy of carbohydrate loading. it is nutritional-performance techniques of storing carbohydrate as glycogen in livers and muscles, so that an athlete has enough supply of energy as ATPs ( from the metabolism of glycogen as glucose) for sustenance needed for entire duration of enduring race.

For maximum performance in long distance races, energy in form of ATP is needed. The mechanisms of substrate level, Kreb's Cycle,and oxidative phosphorylation ensures that stored glycogen in muscles and liver when converted to glucose produce enough steady ATPs for the muscles and therefore for sustenance. Oxygen is the main drive, as combustion fuel for these process to progress.It is the main electron acceptor for the ETC, that ensures steady supply of Energy for ATPs synthesis.

Therefore as long as there is supply of oxygen, stored CHO, can supply enough ATPs for the muscles to improve performance. Thus if carbohydrate is stored as glycogen in liver and muscles, and there is no oxygen to burn it, no energy can be supplied.Thus the storage of glucose and availability of oxygen is essential.

kasliwalalvi24 kasliwalalvi24 · Answer 2 · 2021-10-08T11:12:34+02:00

Answer:

The glucose is the primary source of energy, which yields ATP in the presence of oxygen. The continuous intake of carbohydrates provide streamlined flow ATP that is meeting the demands of prolonged exercises.

Explanation:

Carbohydrate loading is defined as the increase in the intake of carbohydrates. Carbohydrates are stored in the form of glycogen, which is then broken down to yield glucose. Glucose is necessary to drive the vital functions of the body, such as respiration.

An athlete performing extensive exercise requires streamflow of ATP to fulfill the energy demands of the body. The metabolism of glucose provides ATP. The carbohydrates are the rich source of glucose, which in the substrate level undergoes oxidative phosphorylation and citric acid cycle. Oxygen plays a primary role in the breakdown of carbohydrates as glucose. It plays a crucial role in accepting electrons in the electron transport chain to synthesize ATP.

Thus, the continuous supply of oxygen is necessary for the metabolism of macromolecules. ATP in a higher amount is required by athletes to improve muscle performance. Thus, the stored glucose and continuous supply of oxygen are necessary to generate energy molecules.

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