Chapter 4 Flashcards

1
Q

What is the chief source of energy for all body functions and muscular exertion?

A

Carbohydrates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Law stating weight reduction can only take place when there is more energy being burned than is being consumed

A

Law of Thermodynamics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Energy storage and transfer unit within the cells of the body

A

Adenosine triphosphate (ATP)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Primary end product after the digestion of carbohydrates

A

Glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The storage form of carbohydrates in muscle tissue and the liver

A

Glycogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

If unused, carbohydrates are stored in bodily fat cells and converted to what?

A

Fat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is rarely used for energy during exercise and is a source of fuel during starvation?

A

Protein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Process during a negative energy balance that uses amino acids in energy production

A

Gluconeogenesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Process by which a phosphate molecule is added to ADP to make ATP

A

Phosphorylation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

By which 3 pathways can cells generate ATP?

A

APT-PC, glycolysis, oxidative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Simplest and fastest pathway to ATP using a phosphocreatine molecule, primarily used during high-intensity, short-duration activity such as power lifting

A

ATP-PC system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Processes that do not require the use of oxygen

A

Anaerobic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Processes of energy that require the use of oxygen

A

Aerobic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The anaerobic chemical breakdown of glucose for energy

A

Glycolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the most efficient, but slowest and most complex pathway to energy where ATP is created in the presence of oxygen?

A

Oxidative phosphorylation (aerobic glycolysis + Krebs cycle + electron transport chain)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

In which process is pyruvic acid converted into acetyl CoA in the presence of oxygen?

A

Aerobic glycolysis

17
Q

In which process is acetyl CoA is broken down producing 2 ATP, CO2, and hydrogen as byproducts?

A

Krebs cycle

18
Q

During which process do hydrogen ions from the Krebs cycle combine with other ions for the phosphorylation of ADP, creating 1 additional ATP?

A

Electron transport chain

19
Q

Conversion of free fatty acids to acetyl CoA for use in the Krebs cycle

A

beta-oxidation

20
Q

What are 2 factors that determine energy use during exercise?

A

Intensity and duration

21
Q

Energy system used during the onset of activity and primarily maintained during the first 30 seconds of activity

22
Q

Energy system without oxygen used primarily for the first 30 to 50 seconds of activity, dropping off around 3 minutes

A

Glycolysis

23
Q

Primary energy system for activities that last longer than several minutes

A

Aerobic metabolism

24
Q

The state where there is an elevation of the body’s metabolism after exercise

A

Excess post-exercise oxygen consumption (EPOC)

25
What is the respiratory quotient (RQ) when only fats are used as fuel, only occurs during sleep?
0.7
26
What is the respiratory quotient (RQ) when only carbohydrates are used as a fuel source?
1