The Phosphocreatine System Aims: To understand the re-synthesis of ATP through phosphocreatine system. To know what sporting activities predominantly use.

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Presentation transcript:

The Phosphocreatine System Aims: To understand the re-synthesis of ATP through phosphocreatine system. To know what sporting activities predominantly use this energy system. To know the advantages and disadvantages of this energy system.

Group tasks. Recap previous weeks work (ATP). Read and take notes on the Phosphocreatine energy system. Why is it known as a coupled reaction? Write 3 sporting examples were this energy system is predominantly used. You need to know the +/- about this energy system.

Individual Questions. 1. Why is the phosphocreatine energy system a coupled reaction [1]? Answer: because the energy produced in one reaction is used by another reaction. 2.Write an equation showing the resynthesis of ATP using the phosphocreatine system [2]. Answer: PC=P+C+ENERGY (exothermic) ENERGY+ADP+P=ATP (endo)

3. Describe 2 advantages and 2 disadvantages of the phosphocreatine energy system [4]. Advantage.Disadvantage. Provides ATP re-synthesis quickly.Small amount stored in muscle cells. O2 is not required.One mole of ATP is re-synthesised form one mole of PC. No harmful by-productsProvides energy for 10secs.