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A Level Pe > Energy Systems > Flashcards

Energy Systems Flashcards

1
Q

What is atp

A

Adenosine triphosphate

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2
Q

How is energy extracted from atp

A

Atpase breaks down atp into adp p1 and energy

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3
Q

What are the 3 chemical reactions which re-synthesise atp

A

Aerobic
Atp-pc system
Anaerobic glycolic system

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4
Q

What are the 3 stages of the aerobic system

A

Glycolysis
Krebs cycle
Electron transport

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5
Q

Benefits of the aerobic system

A

Can also breakdown fats + proteins
No fatiguing by-products
Lot’s of glycogen store- can exercise for a long time

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6
Q

Negatives of the aerobic system

A

Breaking down fatty acids takes 15% more oxygen
Cannot be used straight away

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7
Q

What happens in glycolysis

A

-anerobic, in sarcoplasm
-breakdown of glucose into pyruvic acid to create 2 atp molecules

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8
Q

Krebs cycle
PT.1

A

Acetyal a combined with ocalacetic acid- citric acid formed- hydrogen removed-citric acid undergoes oxidative carboxylation.

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9
Q

Krebs cycle
Pt2

A

Carbon forms co2 is breathed out- hydrogen sent to electron transport chain

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10
Q

Electron transport

A

Hydrogen
Forms hydrogen ions and electrons
Hydrogen oxidised to form water
Electrons create energy-re-synthesise

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11
Q

Where does ETC occur in the mitochondria

A

Cristea

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12
Q

How many molecules of atp does each process of the aerobic system make

A

Glycolysis- 2
Krebs- 2
ETC- 34

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13
Q

What does the atp-pc system do

A

-immediate anaerobic system
-uses phosocreatine as fuel
-used when body can’t break down oxygen quick enough

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14
Q

What is phospho-creatine

A

-energy rich compound
-in sarcoplasm
-used when a quick burst of energy is needed

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15
Q

What enzyme is involved it the breakdown of phospho-creating

A

Phospho-creative is broken down into phosphate+creating+energy by creating kinase

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16
Q

What is the energy used for in the atp-pc system

A

Used to convert adp back into atp
In a coupled reaction
^energy required by one reaction is supplied by another

17
Q

Advantages of the atp-pc system

A

Can be re-synthesised quickly- 30’s for 50% and 3min for 100%
No fatiguing by-products

18
Q

Disadvantages of the atp-pc system

A

Limited supply of pc in the muscles- 8 seconds
Only 1 atp molecule is resynthesised for every one molecule of pc

19
Q

Anerobic glycocytic system

A

Used for high intensity- up to 4 mins
- produces lactic acid
Produces 4 atp but uses 2 to carry out the process

20
Q

What happens in the anearobic glucocorticoid system

A
21
Q

Advantages of anaerobic system

A

Synthesised quickly due to few chemical reactions.
Lasts longer than atp-pc
Used for sprint finsih

22
Q

Disadvantages of anaerobic system

A

Small amount of energy released
Lactic acid by product- body denatures enzymes.

A Level Pe (7 decks)

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