ATP breakdown + resynthesis Flashcards
How ATP is present in the body
Food we eat is stores as glycogen, amino acids, and triglycerides, ready to be used as fuel of energy production
These feels are metabolised and converted into a compound ATP (adenosine triphosphate)
What is ATP
> High energy compound
Readily available source of energy do muscular contraction
1 adenosine, 3 phosphates
It is broken down for energy of nerve transmission and muscular contraction
ATP breakdown
> ATPase is released to stimulate the final high energy bond to be broken
Which releases money for a muscular contraction
Leaving adenosine diphosphate (ADP) and a single phosphate (P)
This is an exothermic reaction
ATP resynthesis
> Energy is taken in (endothermic reaction)
To rebuild the high energy bond between ADP and P
To produce ATP
What systems allow ATP resynthesis to be achieved?
1) ATP-PC system
2) Glycolytic (Lactic acid) system
3) Aerobic system
Phosphocreatine (PC)
A high energy molecule stored in the muscle cells, used for rapid ATP production during times of increased energy demands
How is PC broken down for ATP resynthesis?
> Creatine kinase breaks down PC into creatine and one phosphate releasing stored energy
Producing 1ATP
Glycogen
The stored form of glucose in the muscles and liver, used as a fuel source
How is glycogen broken down in `ATP resynthesis?
> released from muscles and liver
glycogen phosphorylase breaks glycogen into glucose
glucose is broken down by phosphofructokinase (PFK)
producing 2ATP
Fats
A source of fatty acids, used as a fuel source
How are triglycerides broken down?
Lipolysis:
> Triglycerides is broken down into glycerol and three fatty acids (FFA’s)
> Enzyme lipase
3 stages producing energy by fats
1) Glycolysis
2) The Krebs cycle
3) The electron transport chain
> Producing 36ATP
