Energy systems

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9 Terms

1
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define metabolism

chemical processes that occur within a cell to maintain life

2
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what breaks down ATP?

ATPase to release high energy from bonds

3
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what does falling levels of ATP cause?

stimulates release of creatine kinase which breaks PC bond to release energy

4
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what are the products of PC hydrolysis and what are they used for?

energy and a phosphate molecule used to resynthesise ATP

5
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define a coupled reaction

when the products of one reaction are used in another

6
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where does the ATP/PC system take place

muscle/mitochondria sarcoplasm

7
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5 advantages of ATP/PC system

  • anaerobic so no o2 needed

  • PC is readily useable in muscles

  • fast resynthesis of ATP

  • automatically stimulated by ATP decrease

  • no fatiguing by-products

8
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3 disadvantages of ATP/PC system

  • limited amount of ATP and PC stored

  • small energy yield 1:1

  • only provides energy for 3-10 seconds

9
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what duration and intensity is ATP/PC system used?

short duration and high intensity