Energy Systems (Molecule broken down? Enzyme? Num. of ATP produced? Where it occurs in cell? (Section 2)

Question 1

ATP-PCr (phosphagen system)

Answer 1

Breakdown what molecule? phosphocreatine (PCr)
Enzyme? Creatine Kinase
Number of ATP produced? 1 mol of PCr yields 1 mol of ATP
Where does it occur in the cell? Cystol

Question 2

Glycolytic System (lactate forming)

Answer 2

Breakdown what molecule? glucose (glycolysis)
Enzyme? phosphofructokinase (rate-limiting enzyme)
Number of ATP produced? 2 ATP for each glucose (investment phase uses 2 ATP, generation phase gets 4 ATP
Where does it occur in the cell? Cytoplasm

Question 3

Oxidative System

Answer 3

Breakdown what molecule? NADH and FADH
Enzyme? O2 AVAILABLE: Pyruvate dehydrogenase (PDH); O2 UNAVAILABLE: lactate dehydrogenase (LDH)
Number of ATP produced? 2.5 from NADH, 1.5 from FADH
Where does it occur in the cell? Mitochondria and/or Cystol