Chapter 3: Bioenergetics Flashcards Preview

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Flashcards in Chapter 3: Bioenergetics Deck (25)
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1

Bioenergetics

The energy pathways of metabolism. (NSCA CPT, pg. 47)

2

Catabolic

The breakdown of larger molecules into smaller molecules. (NSCA CPT, pg. 48)

3

Anabolic

Referring to the synthesis of larger molecules from smaller molecules. (NSCA CPT, pg. 48)

4

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)

5

Phosphagen System

The simplest set of chemical reactions needed to produce ATP. (NSCA CPT, pg. 48)

6

Glycolysis

A series of reactions used to produce ATP that utilize only glucose or glycogen as the energy source. (NSCA CPT, pg. 48)

7

Oxidative System

The group of chemical reactions used to produce ATP via aerobic means with a variety of energy sources. (NSCA CPT, pg. 48)

8

Pyruvate

A precursor of lactate during the final steps of glycolysis. (NSCA CPT, pg. 49)

9

Rate-limiting Step

The slowest reaction in a series of reactions. (NSCA CPT, pg. 51)

10

Lactate

An end product of glycolysis; most common marker of increased anaerobic metabolism during exercise. (NSCA CPT, pg. 51)

11

Gluconeogenesis

The formation of glucose from lactate and noncarbohydrate sources. (NSCA CPT, pg. 51)

12

Cori Cycle

A gluconeogenic process, taking place in the liver, in which lactate is converted to glucose. (NSCA CPT, pg. 51)

13

Lactate Threshold

The exercise intensity at which blood lactate begins an abrupt increase above the baseline concentration. (NSCA CPT, pg. 51)

14

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)

15

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)

16

Electron Transport Chain (ETC)

A series of oxidative reactions that rephosphorylate ADP to ATP. (NSCA CPT, pg. 52)

17

Beta Oxidation

A series of reactions that modify fatty acids into acetyl-CoA, which can then enter the Krebs cycle to produce ATP. (NSCA CPT, pg. 52)

18

Glycogenolysis

The breakdown of glycogen. (NSCA CPT, pg. 57)

19

Oxygen Deficit

The difference between the amount of oxygen required for exercise and the amount of oxygen actually consumed during exercise. (NSCA CPT, pg. 57)

20

Oxygen Debt

The oxygen uptake above resting values used to restore the body to the preexercise condition; also termed EPOC. (NSCA CPT, pg. 57)

21

Glycogen

The stored form of glucose. (NSCA CPT, pg. 49)

22

Excess Postexercise Oxygen Consumption (EPOC)

The oxygen uptake above resting values used to restore the body to the preexercise condition; also termed oxygen debt. (NSCA CPT, pg. 57)

23

Creatine Kinase

The main regulator of the breakdown of creatine phosphate. Needed in the phosphagen system. (NSCA CPT, pg. 49)

24

Energy Yield of Glycolysis with glucose

Net of 2 ATP. (NSCA CPT, pg. 49)

25

Energy yield of Glycolysis with glycogen

Net of 3 ATP. (NSCA CPT, pg. 49)