Chapter 9 Flashcards
Compounds of High Phosphoryl Transfer Potential are also known as:
Phosphagens
Phosphagens all share___ features:
Two
Phosphoryl group
Release a lot of energy when hydrolyzed
The common energy currency of the cells is:
ATP
ATP hydrolysis drives:
Anabolism
Movement
Active transport
Signal amplification
ATP synthesis is driven by:
Catabolism
Or photosynthesis
How much ATP is used each day?
40-70 kg
At a given moment how much ATP is in the body?
0.1 kg
Exercise activates three of the processes that require ATP. They are:
Movement: myosin
Active Transport: Na+/K+ pump
Signal Amplification: epinephrine
What can activate myosin, active transport, and signal amplification?
Exercise
During maximal exercise, the rate of ATP hydrolysis is:
0.5 kg/min
How long until existing ATP vanishes during maximal exercise?
~3 seconds
The longer the duration of exercise, the ____ the decrease in ATP concentration
Smaller
What powers ATP hydrolysis?
Catabolism
Creatine Kinase uses ___ to regenerate ATP.
Creatine Phosphate
(Phosphocreatine)
Creatine Kinase using Creatine Phosphate is the ___ way to generate ATP
Fastest
The fastest way to generate ATP is___
Anaerobic
What do kinases do?
Add phosphate groups to substrates
As ATP decreased, ___ and ___ increase
ADP and AMP
Adenylate Kinase is:
Very fast and anaerobic
Adenylate Deaminase is activated during:
Very intense exercise
Adenylate reduction ___ post-exercise ATP repletion
Slows
