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CSCS > Bioenergetics > Flashcards

Bioenergetics Flashcards

1
Q

Flow of energy in a biological system

A

Bioenergetics

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2
Q

Large to small molecules

A

Catabolism

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3
Q

Small to large molecules

A

Anabolism

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4
Q

Energy releasing

A

Exergonic

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5
Q

Require energy

A

Endergonic

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6
Q

Total of all catabolic and anabolic reactions

A

Metabolism

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7
Q

Breakdown of one molecule of ATP to yield energy

A

Hydrolysis

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8
Q

Catalyzes ATP

A

ATPase

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9
Q

Phosphagen and first phase of glycolysis occur in

A

Sarcoplasm

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10
Q

Oxidative occurs in

A

Mitochondria

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11
Q

Only these can be metabolized for energy without direct involvement of oxygen…

A

Carbs

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12
Q

Contribution of energy system based on…

A

Intensity and then duration

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13
Q

Provides ATP primarily for short term high intensity

A

Phosphagen system

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14
Q

Phosphagen system relies on…

A

Hydrolysis of ATP and breakdown of creatine phosphate.

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15
Q

Drives direction of reactions…

A

Law of mass Action

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16
Q

Breakdown of carbs to resynthesize ATP

A

Glycolysis

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17
Q

End rest of glycolysis

A

Pyruvate

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18
Q

Two things cA happen to pyruvate…

A

Converted to lactate. Shuttled to mitochondria

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19
Q

When converted to lactate, ATP resynthesis occurs…

A

At a faster rate, but duration is shorter. Fast glycolysis

20
Q

When sent to mitochondria for krebs, ATP resynthesis rate is…

A

Slower but longer in duration. Slow glycolysis.

21
Q

If energy is needed at a high rate, pyruvate is…

A

Converted to lactate

22
Q

If energy demand is not high and cell has sufficient oxygen…

A

Pyruvate sent to mitochondria

23
Q

Leading to krebs, this is transported to mitochondria

A

Pyruvate And 2 NADH

24
Q

Pyruvate converted to

A

Acetyl coA

25
Q

NADH enters…

A

The ETC

26
Q

Process of adding Pi to another molecule..

A

Phosphorylation

27
Q

Direct resynthesis of ATP from ADP during single reaction in metabolic pathways

A

Substrate level

28
Q

Resynthesis of ATP in ETC is called..

A

Oxidative phosphorylation

29
Q

Gross ATP resyntesized as a result of substrate level…

A

4

30
Q

Blood glucose requires..

A

1 ATP

31
Q

Muscle glucose..

A

Doesn’t require ATP

32
Q

Rate limiting step of glycolysis..

A

PFK

33
Q

Intensity at which blood lactate begins an abrupt increase above baseline concentrations

A

Lactate threshold

34
Q

Second point of inflection at higher intensities..

A

OBLA

35
Q

Primary source of ATP at rest and during low intensity activities

A

Oxidative system

36
Q

One NADH can produce

A

3 ATP

37
Q

One FADH2 can produce

A

2 ATP

38
Q

Oxidative system results in how many ATP from one glucose

A

38

39
Q

Free fatty Acids are broken down by

A

Beta oxidation

40
Q

Major amino acids that are oxidized in skmm

A

BCAAs

41
Q

Rate limiting step of oxidative system

A

Isocitrate dehydrogenase

42
Q

Appropriate exercise intensities and rest intervals can permit selection of specific energy systems

A

Metabolic specificity of training

43
Q

Typical exercise time for phosphagen

A

5 to 10 seconds

44
Q

Time for fast glycolysis

A

15 to 30 seconds

45
Q

Time for fast glycolysis and oxidative

A

1 to 3 minutes

46
Q

Time for oxidative

A

> 3 minutes

CSCS (14 decks)

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