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Note that your final mark will not be saved in the system.
*1.1.c. Energy for exercise Categorise
Target Level
C
Running Total
0
0%
Attempt
1 of 2
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ATP-PCr
Glycolytic system
Aerobic system
High-intensity exercise; can last up to ~4 mins (e.g. 800 m run)
Involves the enzyme creatine kinase in the cytoplasm
Anaerobic reaction
By-products reduce the pH of the muscle and the blood
Uses Phosphocreatine (PC) as a fuel
Most rapid release of energy
Very limited (~8-12 seconds)
Aerobic reaction takes place in the cytoplasm and mitochondria
Longer recovery needed to remove waste products
Involves anaerobic glycolysis in the Sarcoplasm
Involves aerobic glycolysis
The enzyme lactate hydrogenase converts pyruvate
The enzyme pyruvate dehydrogenase converts pyruvate
Used in maximal-intensity exercise (e.g. Power lifting)
Involves the Krebs cycle
Can continue almost indefinitely
By-products: carbon dioxide and water
Involves the electron transport chain
Energy released from the reaction is directly used to resynthesise ATP
By-products: ADP + Pi are used in subsequent hydrolysis reaction to yield ATP
Low-moderate intensity exercise, e.g. water aerobics
Yields 1 ATP molecule per complete reaction
Takes place in the Sarcoplasm
Rapid recovery (full recovery within 4 mins)
1 glycogen molecule as a fuel source can yield 2 molecules of ATP
1 molecule of glycogen can yield 38 ATP molecules
By-product: Lactic acid