Bioenergetics

Question 1

Flow of energy in a biological system

Answer 1

Bioenergetics

Question 2

Large to small molecules

Answer 2

Catabolism

Question 3

Small to large molecules

Answer 3

Anabolism

Question 4

Energy releasing

Answer 4

Exergonic

Question 5

Require energy

Answer 5

Endergonic

Question 6

Total of all catabolic and anabolic reactions

Answer 6

Metabolism

Question 7

Breakdown of one molecule of ATP to yield energy

Answer 7

Hydrolysis

Question 8

Catalyzes ATP

Answer 8

ATPase

Question 9

Phosphagen and first phase of glycolysis occur in

Answer 9

Sarcoplasm

Question 10

Oxidative occurs in

Answer 10

Mitochondria

Question 11

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

Answer 11

Carbs

Question 12

Contribution of energy system based on…

Answer 12

Intensity and then duration

Question 13

Provides ATP primarily for short term high intensity

Answer 13

Phosphagen system

Question 14

Phosphagen system relies on…

Answer 14

Hydrolysis of ATP and breakdown of creatine phosphate.

Question 15

Drives direction of reactions…

Answer 15

Law of mass Action

Question 16

Breakdown of carbs to resynthesize ATP

Answer 16

Glycolysis

Question 17

End rest of glycolysis

Answer 17

Pyruvate

Question 18

Two things cA happen to pyruvate…

Answer 18

Converted to lactate. Shuttled to mitochondria

Question 19

When converted to lactate, ATP resynthesis occurs…

Answer 19

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

Question 20

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

Answer 20

Slower but longer in duration. Slow glycolysis.

Question 21

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

Answer 21

Converted to lactate

Question 22

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

Answer 22

Pyruvate sent to mitochondria

Question 23

Leading to krebs, this is transported to mitochondria

Answer 23

Pyruvate And 2 NADH

Question 24

Pyruvate converted to

Answer 24

Acetyl coA

Question 25

NADH enters…

Answer 25

The ETC

Question 26

Process of adding Pi to another molecule..

Answer 26

Phosphorylation

Question 27

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

Answer 27

Substrate level

Question 28

Resynthesis of ATP in ETC is called..

Answer 28

Oxidative phosphorylation

Question 29

Gross ATP resyntesized as a result of substrate level…

Answer 29

4

Question 30

Blood glucose requires..

Answer 30

1 ATP

Question 31

Muscle glucose..

Answer 31

Doesn’t require ATP

Question 32

Rate limiting step of glycolysis..

Answer 32

PFK

Question 33

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

Answer 33

Lactate threshold

Question 34

Second point of inflection at higher intensities..

Answer 34

OBLA

Question 35

Primary source of ATP at rest and during low intensity activities

Answer 35

Oxidative system

Question 36

One NADH can produce

Answer 36

3 ATP

Question 37

One FADH2 can produce

Answer 37

2 ATP

Question 38

Oxidative system results in how many ATP from one glucose

Answer 38

38

Question 39

Free fatty Acids are broken down by

Answer 39

Beta oxidation

Question 40

Major amino acids that are oxidized in skmm

Answer 40

BCAAs

Question 41

Rate limiting step of oxidative system

Answer 41

Isocitrate dehydrogenase

Question 42

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

Answer 42

Metabolic specificity of training

Question 43

Typical exercise time for phosphagen

Answer 43

5 to 10 seconds

Question 44

Time for fast glycolysis

Answer 44

15 to 30 seconds

Question 45

Time for fast glycolysis and oxidative

Answer 45

1 to 3 minutes

Question 46

Time for oxidative

Answer 46

> 3 minutes