aerobic and anaerobic respiration

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  • Created by: Abi14
  • Created on: 23-03-14 11:42
what is aerobic respiration?
this process happens continously in plants and animals. it uses glucose and oxygen to release energy. carbon dioxide and water are produced as waste products. most reactions take place in mitochondria and are controlled by enzymes.
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what is the word equation for aerobic respiration?
glucose+oxygen------>carbon dioxide+water(+energy)
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what could the energy released by aerobic respiration be used for?
bulid larger molecules from smaller ones, *enable muscle contractions in animals *maintain a constsnt body temperature in colder surroundings mammals+birds *build sugar, nitrates and other nutrients into amino acids and the proteins in plants.
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when exercising what do you muscles need more of?
energy so they can contract. you need to increase the rate at which oxygen and glucose reach the muscle cell and remove extra waste carbon dioxide produced more quickly.
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what changes take place when exercising?
increased heart rate and increase rate and depth of breathing (allowing a greater uptake oxygen and release of carbon dioxide at the lungs).
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what do the changes caused by exercise cause?
these changes increase the blood flow to the muscle and so increase the supply of sugar and oxygen and increase the rate of removal of carbon dioxide.
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what do muscles store glucose as?
GLYCOGEN. the glycogen can be converted back to glucose for use during excerise.
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what happens when the heart rate increases during exercise?
the heart rate increases and the blood vessels supplying the muscles dilate(widen). this allows more blood containing oxygen and glucose to reach the muscles.wh
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when does anerobic respiration occur?
if you use your muscles over a long period of time then they will get tired(fatigued) and stop contracting efficently. when your muscles can not get enough oxygen for aeorbic respiration, they start to respire anaerobically.
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what happens to the glucose and what is produced in anaerobic respiration?
glucose is not completely broken down and latic acid is produced.
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what happens as a result of glucose not being completely broken down?
as the breakdown of glucose is incomplete, much less energy is released during aerobic respiration. anaerobic respiration results in oxugen debt that has to be repaid in order to oxidise latic acid to carbon dioxide and water.
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what happens if muscles are subjected to a lot of exercise for long periods of time?
they become fatigued. one cause of muscle fatigue is the build up of latic acid in the muscles. blood flowing through the muscle removes the latic acid.
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Card 2

Front

what is the word equation for aerobic respiration?

Back

glucose+oxygen------>carbon dioxide+water(+energy)

Card 3

Front

what could the energy released by aerobic respiration be used for?

Back

Preview of the front of card 3

Card 4

Front

when exercising what do you muscles need more of?

Back

Preview of the front of card 4

Card 5

Front

what changes take place when exercising?

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