Category 1: ATP-PCr Cycle
What does ATP stand for?
Adenosine Triphosphate
Where does Glycolysis occur
In the msucle
How many ATP molecules are produced per turn of the Krebs cycle?
1 Atp
Where does the electron transport chain occur in the cell?
Mitochondria
Which energy system provides the quickest source of ATP?
ATP-PCr system
What molecule donates a phosphate to quickly regenerate ATP in the ATP-PCr system?
Phosphocreatine (PCr).
How many ATP molecules are produced net during glycolysis?
2 or 3 ATP
How many NADH molecules are produced per turn of the Krebs cycle
3 NADH
What protein complex produces ATP in the ETC?
ATP Synthase
How does NADH contribute to ATP production?
It donates electrons to the ETC, driving ATP synthesis.
How long does the ATP-PCr system typically sustain energy during high-intensity exercise?
About 10-15 seconds.
What is Oxidation and Reduction?
Oxidation: losing a hydrogen and electrons
Reduction: gaining a hydrogen and electrons
What is the role of FADH2 in the Krebs cycle?
t acts as an electron carrier, transporting electrons to the ETC.
What is the main goal of the ETC?
To oxidize NADH+H+ and FADH2 to resynthesis ATP
What is the primary limiting factor for anaerobic glycolysis?
The buildup of lactic acid (or lactate)
What enzyme breaks the bond between creatine and phosphate>
Creatine kinase.
Name the enzyme that catalyzes (breaks down) the first step of glycolysis.
Hexokinase
What is the main goal(s) of the Kreb's cycle
covert 2-C ACOA into a 6-C molecule
form NADH+H+
Provides energy to pump ____ from the mitochondrial matrix into the _________
1) hydrogen
2) interior membrane space
When lactate increases, what happens to ATP resynthesis
ATP resynthesis decreases
Where does ATP-CPr occur
in the cytoplasm of the cell
What two molecules are produced in glycolysis and enter the Krebs cycle?
Pyruvate (lactate and ACOA)
What gas is released during the Krebs cycle?
CO2
How many ATP does ETC produce?
38-40 ATP
Glycogenolysis occurs in which two places?
Muscle
Liver