Chapter 3: Bioenergetics Flashcards
Bioenergetics
The energy pathways of metabolism. (NSCA CPT, pg. 47)
Catabolic
The breakdown of larger molecules into smaller molecules. (NSCA CPT, pg. 48)
Anabolic
Referring to the synthesis of larger molecules from smaller molecules. (NSCA CPT, pg. 48)
Adenosine Triphosphate (ATP)
The universal energy-carrying molecule manufactured in all living cells as a means of capturing and storing energy. (NSCA CPT, pg. 48)
Phosphagen System
The simplest set of chemical reactions needed to produce ATP. (NSCA CPT, pg. 48)
Glycolysis
A series of reactions used to produce ATP that utilize only glucose or glycogen as the energy source. (NSCA CPT, pg. 48)
Oxidative System
The group of chemical reactions used to produce ATP via aerobic means with a variety of energy sources. (NSCA CPT, pg. 48)
Pyruvate
A precursor of lactate during the final steps of glycolysis. (NSCA CPT, pg. 49)
Rate-limiting Step
The slowest reaction in a series of reactions. (NSCA CPT, pg. 51)
Lactate
An end product of glycolysis; most common marker of increased anaerobic metabolism during exercise. (NSCA CPT, pg. 51)
Gluconeogenesis
The formation of glucose from lactate and noncarbohydrate sources. (NSCA CPT, pg. 51)
Cori Cycle
A gluconeogenic process, taking place in the liver, in which lactate is converted to glucose. (NSCA CPT, pg. 51)
Lactate Threshold
The exercise intensity at which blood lactate begins an abrupt increase above the baseline concentration. (NSCA CPT, pg. 51)
Onset of Blood Lactate Accumulation (OBLA)
The point at which blood lactate concentrations reach 4 mmol/L during exercise of increasing intensity. (NSCA CPT, pg. 51)
Krebs Cycle
A series of reactions used to produce ATP, indirectly, that utilize carbohydrate, fat, or protein as an energy source after their modification to acetyl-CoA. (NSCA CPT, pg. 52)