Energy systems

Question 1

What is ATP splitting

Answer 1

3rd phosphate breaks of the ATP via enzyme ATPase, releases heat and energy for muscular contraction

Question 2

What is the ATP-PC system

Answer 2

High levels of ADP detected
Release of enzyme creatine kinase
Breaks down creatine phosphate into a creatine and phosphate
This releases energy to be used to resynthesise ATP

Question 3

Characteristics of ATP - PC system

Answer 3

2-10 seconds
anaerobic
Fuel - creatine phosphate
Occurs at sarcoplasm
Can only be resynthesised in presence of O2
1:1 ratio
No fatiguing biproducts

Question 4

What is the process of anaerobic glycolysis

Answer 4

Glycogen from muscles/liver broken down into glucose-6-phosphate by Phosphofructokinase
Glucose-6-phosphate broken down into pyruvate by glucose phosphorylase
Lactate dehydrogenase converts pyruvate into lactic acid as waste product
Some lactic acid can be converted into glycogen in presence of O2

Question 5

Characteristics of anaerobic glycolysis

Answer 5

Lasts 10seconds-3mins
Occurs in sarcoplasm
No O2 is used
Net 2 ATP gained
2:1 ratio
Only small amount of energy is released from glycogen in these conditions