The Body In Action Assignment. Energy systems.

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Energy Systems (P8) (M6)

The body has several energy systems such as ‘Creatine Phosphate Energy System’, ‘Lactic Acid Energy’ and the two main energy systems are ‘Aerobic Energy System’ and ‘Anaerobic Energy System’.

The aerobic energy system produces the largest amount of energy, although at the lowest intensity, therefore at the start of exercise the body cannot deliver oxygen to the muscles quick enough to initiate the complex chemical reactions which occur during aerobic metabolism. The aerobic system utilises fat, carbohydrates and proteins which allows an unlimited supply of ATP as long there is oxygen present. For the aerobic energy system long distance running would be the sporting or exercising activity.

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There are three sections in the aerobic system:

  • Glycolysis
  • Krebs Cycle
  • Electron Transport Chain (ETC)

Glycolysis is an ATP generating metabolic process that occurs in nearly all living cells in which glucose is converted in a series of steps to pyruvic acid.

Krebs cycle is a series of enzymatic reactions in aerobic organisms involving oxidative metabolism of acetyl units and producing high-energy phosphate compounds, which serve as the main source of cellular energy.

Electron transport chain is a group of compounds that pass electron from one to another via redox reactions coupled with the transfer of proton ...

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This assignment would gain the merit criteria, but could be refined to reflect the accurate theory associated with the energy systems. Examples of each system are given and a good attempt to differentiate between each system's process and role. 4 stars for a BTEC course.