GCSE Biology Revision "Exercise"
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Last updated 9:37 PM on 3/11/25
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10 Terms
1
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What increases in the body during exercise to meet energy demands?
Aerobic respiration increases, requiring more oxygen.
2
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What happens to breathing rate and volume during exercise?
Both breathing rate and breathing volume increase.
3
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What is anaerobic respiration?
A type of respiration that occurs when there is not enough oxygen, leading to incomplete oxidation of glucose.
4
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What chemical builds up in the muscles during anaerobic respiration?
Lactic acid.
5
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What is oxygen debt?
The amount of extra oxygen the body needs after exercise to remove accumulated lactic acid.
6
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What happens to lactic acid after it is produced in the muscles?
It is transported to the liver and converted back to glucose.
7
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Why do people continue breathing rapidly after vigorous exercise?
To supply the extra oxygen needed to deal with accumulated lactic acid.
8
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What is a key consequence of lactic acid buildup in the muscles?
Muscle fatigue, preventing efficient contraction.
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What is the difference between aerobic and anaerobic respiration regarding energy output?
Aerobic respiration produces more energy (ATP) compared to anaerobic respiration.
10
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How does regular exercise affect the heart?
It strengthens the heart muscle and improves its efficiency in pumping blood.
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Flashcards (244)