Chapter 3 Flashcards
Bioenergetics is defined as
The flow of energy in a biological system
The conversion of macro nutrients to biologically usable forms of energy
catabolism is defined as the
Breakdown of large molecules into smaller molecules associated with the release of energy
Exergonic reactions are defined as
 Energy releasing reactions that are generally catabolic
anabolism is defined as
The synthesis of larger molecules from smaller molecules can be accomplished using energy released from catabolic reactions
Endergonic reactions are those that require
Energy including anabolic process is a contraction of a muscle
Metabolism is the
total of all the catabolic and exergonic and anabolic endergonic reaction’s in a biological system
adenosine tri phosphate is defined as a molecule that allows for the transfer of energy from —- to —– reactions
exergonic to endergonic
The chemical structure of ATP molecules includes
Adenosine tri phosphate group and locations of high energy chemical bonds
The hydrolysis of ATP breaks the terminal phosphate bond and then
releases energy and leaves ADP and inorganic phosphate and a hydrogen ion
The hydrolysis of ADP breaks the
terminal phosphate bond releases energy and leaves AMP inorganic phosphate and a hydrogen ion
There are three basic energy systems that exist in muscle cells to replenish Atp what are they?
Phosphagen system
Glycolysis
Oxidative system
Atp from the phosphogen system is primarily from short term….
high intensity activities and it’s active at the start of All Exercise
creatine kinase catalyzes the synthesis of
ATP from creatine phosphate and ADP
The body does not store enough—-for Exercise
ATP
ATP stored in the body is used for
Basic cellular function
The Phosphagen system uses — —- reaction to maintain the concentration of Atp
Creatine kinase
The fastest way to replenish Atp rapidly is through the
Phosphagen system
The law of mass action identifies that
Concentrations of reactants or products in a solution will drive the direction of the reactions
The law of mass action sums up by saying
If you have a lot of ATP stores, the body will not make it
in short duration exercise the primary energy system will be
The phosphogen system
Glycolysis is used to
Break down carbohydrates- either glycogen stored in the blood or glucose delivered in the blood to resynthesize Atp
Three outputs of glycolysis include
ADP
ATP
NAD+ , NADH 
Glycolysis has an end result in the production of
Pyruvate
Pyruvate resulting from glycolysis can be converted to
Lactate
The Lactaid from pyruvate pyruvate through glycolysis can be used to resynthesize
atp at a faster rate
pyruvate from glycolosis can also be shuttled to the
Mitochondria
Pyruvate from glycolysis in the mitochondria undergoes the
Krebs cycle
in the Krebs cycle Atp resynthesize is at a slower rate but can occur
For longer duration for exercise intensity that is low
The Krebs cycle is an aerobic cycle also known as
Slow glycolysis
When pyruvate converts to lactate the process is sometimes called
Fast glycolysis
fast glycolysis has the formation of lactate from pyruvate catalyzed by the enzyme
Lactate dehydrogenase
The end result of the conversion from pyruvate to lactate is not
Lactic acid
Lactate resulting from fast glycolysis from the conversion of pyruvate is not the cause of cellular
Fatigue
The probable cause of cellular fatigue from fast glycolysis is
hydrogen build up
The output of fast glycolysis is lactate Atp and
Water
Lactate can be transported in the blood to the liver where it can be converted to
Glucose
Lactates conversion to glucose in the liver is called the
cori cycle
The buildup of hydrogen ions that cause fatigue cause a drop in
PH
The Krebs cycle is also known as what type of glycolysis
Slow glycolysis
In the Krebs cycle pyruvate enters the mitochondria in his converted to
acetyl CoA
acetyl CoA can enter
The Krebs cycle
NADH molecules from the Krebs cycle enter the
Electron transport system
The electron transport system is used to resynthesize
Atp
The output of the Krebs cycle is
2 pyruvate
2 atp
2 NADH
2 H2O
The outcome of fast glycolysis is
2 lactate
2 Atp and water
The energy yielded from glycolysis from one molecule of blood glucose yields
2 Atp