ATP-PC
Occurs in the
Sarcoplasm
Occure in the
Sarcoplasm
3 main steps
Generation of Acetyl-CoA
Krebs cycle
Oxidative phosphorylation (ETC)
What are the primary sources of fuel during exercise?
Carbohydrates & lipids
What is the function of a modulator?
Increase or decrease enzyme activity
Usually lasts
0-10 seconds
30 sec - 2 min
ATP synthase creates
ATP and H2O
What are three disaccharides?
Sucrose - glucose & fructose
Maltose - glucose & glucose
Lactose - glucose & galactose
What is the rate limiting enzyme, stimulator, & inhibitor of ATP-PC?
RLE: Creatine kinase
Stim: ADP
Inhib: ATP
The enzyme used as the catalyst
Creatine Kinase
Two enzymes used in this system
Hexokinase & Phosphofructokinase (PFK)
Gross production on Kreb's cycle
6 NADH, 2 FADH2, 2 ATP, & 4 CO2
How much rapidly available energy is produce from a CHO, Fats, and proteins?
4 kcal/g, 9 kcal/g, & 4kcal/g
What is the rate limiting enzyme, stimulator, & inhibitor of Glycolysis?
RLE: PFK
Stim: ADP
Inhin: ATP, PC, citrate, increase PH
Number of ATP per PC
1 ATP
This system is used for
High intensity exercise
How many ATP per carrier?
NADH = 2.5
FADH2 = 1.5
The breakdown of fats
What is the rate limiting enzyme, stimulator, & inhibitor of the Krebs Cycle?
Stim: ADP, NAD, Ca++
Inhib: ATP, NADH
X + ADP --> ATP + X
PC + ADP --> ATP + C
Gross production
4 ATP (2 net ATP) & 2 NADH & 2 pyruvate
Final electron acceptor in ETC
O2
Define glycogenolysis and glyconeogenesis
The breakdown of glucose & the forming of glucose
What is the rate limiting enzyme, stimulator, & inhibitor of ETC?
RLE: Cytochrome oxidase
Stim: ADP, Pi
Inhib: ATP