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DC A Level PE - Anatomy & Physiology > Energy Systems - Aerobic System (A2) > Flashcards

Energy Systems - Aerobic System (A2) Flashcards

1
Q

What type of reaction is the Aerobic System process

A

Aerobic

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2
Q

Which stage does the Aerobic System follow on from?

A

Phosphofructokinase breaking down Glycogen into Pyruvic Acid and 2 ATP

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3
Q

When can you carry on the breakdown of Pyruvic Acid?

A

If there is sufficient oxygen

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4
Q

Which enzyme breaks down Pyruvic Acid and what does it produce?

A

Coenzyme A

Produces: Acetyl CoA

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5
Q

Where does Acetyl CoA move to and why does it do this?

A

The mitochondria as it is the site of aerobic respiration

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6
Q

What does Acetyl CoA combine with in the mitochondria and what does it produce?

A

Combines with Oxalocetic Acid to produce Citric Acid

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7
Q

What cycle does Citric Acid enter?

A

Krebs Cycle

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8
Q

What is citric acid split into in the Krebs Cycle?

A

2 ATP molecules
Hydrogen
Carbon Dioxide

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9
Q

What process occurs after the Krebs Cycle?

A

Electron Transport Chain

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10
Q

What is hydrogen split into (ETC)?

A

H+ proton

H- electron

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11
Q

What gas binds with the H+ molecule and what is produced?

A

Oxygen -> produces water

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12
Q

What are the names of the 2 hydrogen carriers?

A

NAD and FAD

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13
Q

How many electrons can a FAD or NAD carrier pick up?

A

2 electrons each (1 pair)

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14
Q

How much energy does FAD produce?

A

Enough energy for the resysnthesis of 2 ATP molecules

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15
Q

How much energy does NAD produce?

A

Enough energy for the resysnthesis of 3 ATP molecules

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16
Q

How much ATP does the ETC produce?

A

34 ATP

17
Q

How much ATP is produced in the aerobic system overall?

A

38 ATP

18
Q

Where does the spare 4 ATP come from?

A

2 ATP from the Glycolytic System

2 ATP from the Krebs Cycle

19
Q

What are the 3 overall stages to the Aerobic System?

A

Aerobic Glycolysis
Krebs Cycle
Electron Transport Chain

20
Q

What is the energy equation for the Aerobic System?

A

C6 H12 O6 + 6O2 -> 6CO2 + 6H20 + Energy

21
Q

What two by products are produced in the Aerobic System?

A

CO2 and H2O

22
Q

What are the strengths of the Aerobic System?

A 
High ATP yield (1:38)
Long duration of energy production
Large fuels (triglycerides, free fatty acids, glycogen and glucose)
23
Q

What are the weaknesses of the Aerobic System?

A

Complex reaction series
Delay for oxygen delivery
Slow energy production limits to sub maximal activity

24
Q

What is the duration of this energy system?

A

3 minutes onwards

25
Q

What substance broken down as fuel for low intensity exercise (not glycogen/glucose)?

A

Fat

26
Q

Which enzyme breaks fat down?

A

Lipase

27
Q

What does lipase break fat down into?

A

Free fatty acids and glycerol

28
Q

How much more oxygen is required to breakdown fats rather than glucose?

A

15% more

DC A Level PE - Anatomy & Physiology (18 decks)

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