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PE Paper 1 > Energy Systems 3 > Flashcards

Energy Systems 3 Flashcards

1
Q

describe the ATP-PC system

A

PC > P+C+energy (broken down by creatine kinase)

energy+ADP+P=ATP

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2
Q

what type of reaction is the ATP-PC

A

anaerobic

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3
Q

what is the site of reaction for the ATP-PC system?

A

sarcoplasm

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4
Q

sports examples when using ATP-PC system?

A

100m sprint, goalshooter in netball

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5
Q

advantaged of ATP-PC system?

A
  • no delay for oxygen
  • PC already available in muscles
  • fast recovery & rapid resynthesis of ATP
  • no fatiguing by by-product (LA)
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6
Q

what is the fuel for the ATP-PC system?

A

phosphocreatine

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7
Q

what is the duration of the ATP-PC system?

A

up to 10 seconds

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8
Q

what are disadvantages of the ATP-PC system?

A
  • low ATP yield
  • small PC store which lead to rapid fatigue after 8-10 seconds
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9
Q

what is the site of reaction for the gycolytic system?

A

sarcoplasm

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10
Q

whats the fuel in the glycolytic system?

A

glycogen

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11
Q

what type of reaction is the glycolytic store?

A

anaerobic

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12
Q

what is the by-product of the glyolytic system?

A

lactic acid

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13
Q

what is the duration of the glycolytic system?

A

up to 3 minutes

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14
Q

what are some sports examples where a performer/s would use the glycolytic system?

A

a netball centre, tennis rally or a 400m sprint

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15
Q

what are advantages of the glycolytic system?

A
  • no delay for oxygen
  • fast fuel breakdown
  • lactic acid can be recycled into fuel
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16
Q

describe the glycolytic system:

A

glycogen > glucose (through GPP) > pyruvix acid (through PFK) > lactic acid (through LDH). energy from the reactions + 2ADP + 2P = 2ATP

17
Q

what are the disadvantages of the glycolytic system?

A
  • fatiguing from by product
  • low ATP yield
  • recovery time is long (up to 60 mins)
18
Q

what are the three stages of the aerobic system?

A

aerobic glycolysis, krebs cycle and electron transport chain (ETC)

19
Q

describe aerobic glycolysis

A

glycogen> glucose (FFAS) (gpp) > pyruvic acid (pfk) > acetyl coA = 2ATP

20
Q

describe kreb’s cycle

A

acetyl coA + oxaloacetic acid > citric acid > CO2, hydrogen and energy> 2ATP

21
Q

describe the electron transport chain

A

hydrogen > e~ (carried by electron carriers NAD and FAD)
H+ + O2 = H20
= 34ATP =38ATP altogether

22
Q

what type of reaction is the aerobic system

A

aerobic

23
Q

what are the sites of reaction in the aerobic system

A
  1. sacroplasm
  2. matrix
  3. cristae of mitochondria
24
Q

what are the by-products of the aerobic system

A

CO2, H20

25
Q

duration of aerobic system

A

3 minutes onwards

26
Q

sporting examples of using the aerobic system

A

marathon runner, long distance rowing

27
Q

advantages of the aerobic system

A
  • high atp yield
  • long duration of energy production
  • no fatigue from by- product
28
Q

disadvantages of aerobic system

A
  • delay for oxygen delivery and complex series of reactions
  • slow energy production and resynthesis (up to 24 hrs)
  • FFAS (fats) need 15% more O2 for breakdown
29
Q

what does OBLA stand for

A

onset of blood lactate threshold

30
Q

what is OBLA

A

an increase in blood lactate above 4 mmol/l (crossing the lactate threshold). this is an increase from 2mmol/l at rest

31
Q

how long does it take for ATP-PC to resynthesise?

A

3 minutes

32
Q

how long does it take for the glycolytic system to resynthesise?

A

20 minutes-2 hours

33
Q

how long does it take for the aerobic system to resynthesise?

A

up to 24hrs

PE Paper 1 (14 decks)

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