The document summarizes different metabolic pathways that cells use to generate energy in the form of ATP. It discusses the phosphagen system which provides a quick burst of energy through creatine phosphate. Glycolysis breaks down carbohydrates to generate some ATP along with NADH. The Krebs cycle further breaks down products from glycolysis to produce more ATP, NADH, and FADH which feed into the electron transport system to generate the most ATP through oxidative phosphorylation. Aerobic glycolysis of one carbohydrate molecule can ultimately generate 38 ATP through these metabolic pathways.

1. METABOLISM
Part I

2. • ATP is the energy used for exercise
• It is made up of an Adenosine + 3 Phosphates
• It breaks down to create energy leaving ADP +P
• Cells can generate energy through:
– Phosphagen System
– Glycolysis (Metabloizes Carbohydrates)
– Oxidative System (Metabolizes Fat)

3. PHOSPHAGEN SYSTEM
• Very fast but small amount of energy
• Good for short bursts
• Active at the start of all exercise
• Can maintain the supply of ATP at high levels of
exercise for 3 to 15 seconds. After that Glycolysis
needs to help out.
• Free floating Creatine phosphate (CP) provides a
Phosphate that combines with ADP to regenerate
ATP
• Type II fibers contain higher levels of CP

4. GLYCOLYSIS
CARBOHYDRATE
4
ATP
-2
ATP 2 NADH ETS
PYRUVATE
LACTATE
2 NADH
2
Acetyl
CoA KREB’s CYCLE

5. KREB’s Cycle
1
1 ATP
Acetyl
CoA
3 NADH ETS
1 FADH ETS

6. Electron Transport System
NADH FADH
ATP ATP
ATP
NADH = 3 ATP FADH = 2 ATP

7. AEROBIC GLYCOLYSIS
+ 4 ATP
-2 ATP
2 NADH = 6 ATP
2 NADH = 6 ATP
1 Acetyl CoA = 1 ATP, 3 NADH (9ATP), 1 FADH (2 ATP)
So 1 Acetyl CoA = 12 ATP
2nd Acetyl CoA = 12 ATP
TOTAL = 38 ATP from 1 Carbohydrate