Energy Metabolism Flashcards
What is ATP?
ATP(adenosine triphosphate)(energy unit)-energy carrying molecule in the body
When is it released?
Released during breakdown of glucose, fatty acids, and amino acids (Must be generated continuously since muscles store only enough ATP for 1-3 seconds of activity)
What is ADP?
It is converted into ATP
ATP is produced by 2 separate energy systems, which are…
- Anaerobic systems in cytosol
- Aerobic system in mitochondria
Catabolism
chemical reactions that result in the breakdown of more complex organic molecules into simpler substances.
Anabolism
chemical reactions in which simpler substances are combined to form more complex molecules. Anabolic reactions usually require energy.
Most of our initial weight loss in low-carb diets is…
water weight
As soon as you go back on the low carb diet you
regain all that weight
Glycolysis
- First step in the metabolism of glucose
- The breakdown of glucose-> ATP (1 glucose=2 ATP)
Where is glycogen stored?
muscles
What is the end product of glycolysis?
End product is pyruvic acid converted to lactic acid
What is lactic acid?
It contributes to fatigue during a workout but not the only reason
What plays a role in lactic acid build up?
of mitochondria plays a role in build up of lactic acid (endurance exercise can increase the # of mitochondria in the muscle cell)
What is aerobic energy?
(requiring oxygen) energy system occurs in the mitochondria of cell
Aerobic energy is the…
Primary fuel for longer-lasting, lower-intensity activities
