Energy for exercise

Question 1

How is ATP broken down

Answer 1

1. Enzyme ATpase released which stimulates high energy bond to be broken
   2.Exothermic reaction takes place and released energy for muscular contraction
   3.This leaves ADP and a single phosphate (P)

Question 2

How is ATP resynthesised

Answer 2

1. Endothermic reaction occurs where energy from surrounding area is absorbed to re-build high energy bond between ADP and P.
   The energy is provided by one of the 3 energy systems

Question 3

ATP/PC system

Answer 3

1. ATP used and ATP levels fall
2. ADP + P levels increase this triggers release of Creatine Kinase
3. PC stored in muscle cells and is broken down in the sarcoplasm
   4.High energy bond between phosphate and creatine broken down
4. Energy released for ATP re synthesis
5. Coupled reaction therefore the P joins back to ATP

Question 4

7 Wonders ATP/PC system

Answer 4

Type- anaerobic
Site- Sarcoplasm
Fuel- PC
Enzyme-Creatine Kinase
Yield- 1:1
Stages- PC—> P+C+ energy (exothermic)
Energy + P + ADP ——> ATP (endothermic)
By-products- none

Question 5

What is ATP?

Answer 5

High energy compound broken down by Atpase to provide an immediate source of energy

Question 6

7 wonders of glycolytic system

Answer 6

Type- anaerobic
Fuel-glycogen/glucose
Site- sarcoplasm
Enzyme- GPP,PFK,LDH
Yield- 1:2
Process- Glucose ——> pyruvic acid +energy
By products- Latic acid

Question 7

Strengths of the glycolytic system

Answer 7

No delay for oxygen and large fuel stores in liver, muscles and blood
Fast breakdown of ATP resynthesis
Provides energy for high intensity activity for 3 mins
Latic acid can be recycled

Question 8

Weaknesses of the glycolytic system

Answer 8

Fatiguing by product Latic acid reduces PH and inhibits enzyme activity
Lower ATP yield and recovery can be lengthy

Question 9

Strengths of ATP/PC system

Answer 9

No delay for oxygen
PC readily available in the muscle cell
Simple rapid breakdown of PC
No by products