energy systems & food fuels
For this section you will need to know the following topics;
Energy sources and systems – fats, carbohydrates and proteins; locations within the body, factors affecting their use, related to intensity and duration of the exercise, resynthesis of ATP.
Aerobic energy system– simplified biochemistry in the breakdown, release and regeneration of ATP in glycolosis, the Krebs cycle and Electron transport chain, role of mitochondria, use in sporting situations
Anaerobic energy systems– simplified biochemistry in the lactate anaerobic system – use in sporting situations
ATP-PC energy system – use in sporting situations.
Energy sources and systems – fats, carbohydrates and proteins; locations within the body, factors affecting their use, related to intensity and duration of the exercise, resynthesis of ATP.
Aerobic energy system– simplified biochemistry in the breakdown, release and regeneration of ATP in glycolosis, the Krebs cycle and Electron transport chain, role of mitochondria, use in sporting situations
Anaerobic energy systems– simplified biochemistry in the lactate anaerobic system – use in sporting situations
ATP-PC energy system – use in sporting situations.
atp_structure.doc | |
File Size: | 955 kb |
File Type: | doc |
Food fuels (Energy Sources)
These questions often ask about 'main food sources' involved in an activity. Be careful to read the question here as you will get confused between sources and systems. Three ones to remember; Carbohydrate, Fat, Protein. Even though you can argue that protein is not really a food fuel for exercise- if its a three mark question get it down!
You may also be asked to explain the relationship between Food Fuels and Energy Systems in relation to the intensity of exercise being performed (Fats for slow and low, Carbohydrates for fast and high).
You may also be asked to explain the relationship between Food Fuels and Energy Systems in relation to the intensity of exercise being performed (Fats for slow and low, Carbohydrates for fast and high).
food_fuels_used_for_atp_resynthesis.ppt | |
File Size: | 489 kb |
File Type: | ppt |
energy_sources_for_action.doc | |
File Size: | 653 kb |
File Type: | doc |
KEY WORDS
Carbohydrate, Fats, Proteins
Carbohydrate, Fats, Proteins
Aerobic energy system
Questions here will often give a sporting scenario and ask you to explain how the energy is provided for this activity. Look at the mark scheme to guide you on how much detail to write. If it is a stretch and challenge question then you will need to write in greater depth than a 3 mark question. Remember that this system is used for longer periods of time, lower intensities and that fats can access the system via Beta Oxidation.
aerobic_system_overview_1.doc | |
File Size: | 766 kb |
File Type: | doc |
aerobic_system_overview_2.doc | |
File Size: | 1681 kb |
File Type: | doc |
aerobic_system_overview_3_with_mitochondria.doc | |
File Size: | 693 kb |
File Type: | doc |
basic_aerobic_system_overview.ppt | |
File Size: | 481 kb |
File Type: | ppt |
large_diagram_of_aerobic_system.doc | |
File Size: | 737 kb |
File Type: | doc |
KEY WORDS
Aerobic Gylcolysis, Glycogen, Fats, Beta Oxidation, Oxygen, Glycogen Phosphorylate, Phosphofructokinase, Pyruvate, ATP, Mitochondria, Cristae, Matrix, Citric Acid, Acetyl CoA, CO2, H2O, Krebs Cycle, Electron Transport Chain, 3 minutes plus duration, Low Intensity.
Aerobic Gylcolysis, Glycogen, Fats, Beta Oxidation, Oxygen, Glycogen Phosphorylate, Phosphofructokinase, Pyruvate, ATP, Mitochondria, Cristae, Matrix, Citric Acid, Acetyl CoA, CO2, H2O, Krebs Cycle, Electron Transport Chain, 3 minutes plus duration, Low Intensity.
anaerobic energy systems (lactic acid)
This system is often call Anaerobic Glycolysis as it starts the same way that the Aerobic system does with the breakdown of Glycogen but in the absence of Oxygen (anaerobic) Pyruvate is converted to Lactic Acid via Lactate Dehydrogenase.
Typical exam question here will give a scenario that has a time frame of between 1-2 minutes and of usually high intensity.
Typical exam question here will give a scenario that has a time frame of between 1-2 minutes and of usually high intensity.
lactic_acid_pathway.doc | |
File Size: | 630 kb |
File Type: | doc |
lactic_acid_system.pptx | |
File Size: | 83 kb |
File Type: | pptx |
KEY WORDS
Anaerobic, Lactic Acid, Lactate Dehydrogenase, ATP, Glycogen, High intensity, 1- 3 minutes, Energy.
Anaerobic, Lactic Acid, Lactate Dehydrogenase, ATP, Glycogen, High intensity, 1- 3 minutes, Energy.
atp-pc energy system
Questions here will often give a sporting scenario that involves a quick high intensity action and ask you to explain the system that is providing the energy. It is often useful to remember to include the reversible equation ATP- ADP + P + Energy. ADP + P + Energy = ATP.
Click here to view a clip on ATP-PC system
Click here to view a summary of the ATP-PC system
Click here to view a clip on the ATP-PC system 2
Click here to view a clip of the Lactic Acid System
Click here to view a summary of the ATP-PC system
Click here to view a clip on the ATP-PC system 2
Click here to view a clip of the Lactic Acid System
KEY WORDS
ATP, Phosphocreatine, Anaerobic, Creatine Kinase, Sarcoplasm, 3-10 seconds duration,
ATP, Phosphocreatine, Anaerobic, Creatine Kinase, Sarcoplasm, 3-10 seconds duration,
energy continuum
It is important to remember that the systems do not just simply switch on and off depending on the activity you are doing. They work along a continuum, where they can supply a larger or smaller proportion of the energy required.
characteristics_of_energy_systems.doc | |
File Size: | 513 kb |
File Type: | doc |
energy_continuum.doc | |
File Size: | 583 kb |
File Type: | doc |
past paper questions
Energy Systems and Sources Exam Questions | |
File Size: | 15 kb |
File Type: | docx |