This document outlines the anaerobic ATP-PC energy system. It provides quick energy in the form of ATP through the breakdown of phosphocreatine (PC) without using oxygen. This reaction takes place in the sarcoplasm of muscle cells, and is controlled by the enzymes ATPase and creatine kinase. The byproducts of this reaction include Pi and creatine, until aerobic respiration can resynthesize ATP from spare energy during recovery.

1. 5) ENERGY YIELD
1ATP………………………………………………..... 1) TYPE OF REACTION
………………………………………… Anaerobic………………………
………………………………….
7) PRACTICAL APPLICATIONS
Activity 1 = ………………………… 2) CHEMICAL / FOOD FUEL
………………………………………… ……………….ATP……………
………………………………………… ………………..PC……………...
Activity 2 = …………………………
…………………………………………
ATP/PC
6) BY PRODUCTS/EFFECTS
Pi + C remains until it is resynthesised from
spare energy during recovery via Aerobic E
system…………………………………………… 3) REACTION SITE
……………………………………………………. Muscle cell………………………
Sarcoplasm……………………….
8) OUTLINE OF
SYSTEM
…………………………………………………………...
ATP>>ADP + Pi + E for work >> (exothermic)………
…………………………………………………………... 4) CONTROLLING ENZYMES
E + ADP + Pi =ATP (endothermic)………………….. ATP = ATPase…………………………….
…………………………………………………………... PC = Creatine Kinase………………………
Coupled reaction breakdown of PC linked to resynthesis
of ATP……………………………………………………