CELL RESPIRATION
ATP ADENOSINE TRIPHOSPHATE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Food
|
|
|
Muscles
|
|
|
Oxygen
|
Detailed explanation-1: -ATP is replenished by using phosphocreatine to convert adenosine diphosphate (ADP) into ATP in the mitochondria of cells within the muscle tissue. ATP is therefore produced from glucose (carbohydrates) through the glycolytic pathway.
Detailed explanation-2: -Source of Fuel – The alactacid energy system or ATP/PC (Adenosine Tri-Phosphate/Phospho-Creatine) energy system uses the ATP that is immediately available within the muscle cell (myocyte).
Detailed explanation-3: -The anaerobic alactic (without oxygen, without lactic acid) or ATP-CP system is fueled by stored ATP and another high energy substance, creatine phosphate (CP). Because these fuel stores are relatively small, the immediate system only supplies energy for up to about 10 seconds of high intensity activity.
Detailed explanation-4: -Three energy systems function to replenish ATP in muscle: (1) Phosphagen, (2) Glycolytic, and (3) Mitochondrial Respiration.
Detailed explanation-5: -Initially ATP stored in the myosin cross-bridges (microscopic contractile parts of muscle) is broken down to release energy for muscle contraction. This leaves the by-products of ATP breakdown: adenosine diphosphate (ADP) and one single phosphate (Pi) all on its own.