Question

Which of the following shows the correct order of energy systems from the fastest relative rate of ATP formed per sec to the slowest?

PCR= Phospho-creatine
AnG = Anaerobic Glycolysis
AG= Oxidative Carb or Aerobic Glycolysis
AL= Oxidative Fat or Aerobic Lipolysis
a)PCR, AnG, AG, AL
b)AL,AG, AnG, PCR
c)PCR, AG, AnG, AL
d)PCR, Ang, AL, AG

Answer 1

The correct order is phospho-creatine (PCR), anaerobic glycolysis (AnG), aerobic glycolysis (AG), and aerobic lipolysis (AL), aligning from the fastest to slowest rate of ATP formation.

Step-by-step explanation:

The correct order of energy systems from the fastest relative rate of ATP formation per second to the slowest is:

1. Phospho-creatine (PCR)
2. Anaerobic Glycolysis (AnG)
3. Oxidative Carb or Aerobic Glycolysis (AG)
4. Oxidative Fat or Aerobic Lipolysis (AL)

Each energy system produces ATP at different rates:

• PCR: Provides immediate ATP for muscle contraction but only lasts a few seconds.
• AnG: Supplies ATP quickly in the absence of oxygen but produces by-products like lactic acid and lasts for a short period.
• AG: Utilizes oxygen to produce ATP at a slower rate than AnG but sustains muscle work for longer periods.
• AL: The slowest of all, it uses oxygen as well and can supply ATP for several hours or as long as fuel is available.