B3 - Respiration

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What is respiration?
Takes energy from food and puts inside a molecule called ATP which can then be used for different processes in living organisms
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What does aerobic respiration involve?
Oxygen
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What is the symbol equation for aerobic respiration?
C6H12O6 + 6O2 → 6CO2 + 6H2O
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What happens during exercise?
Increases in breathing rate and heart rate. This means the muscles often do not receive sufficient oxygen.
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What do the muscles then start to use?
Anaerobic respiration in addition to aerobic respiration
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What is the word equation for anaerobic respiration?
glucose → lactic acid + energy
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What are the disadvantages anaerobic respiration has over aerobic?
-The lactic acid causes pain and fatigue -Produces less energy
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What is the oxygen debt?
The incomplete breakdown of glucose resulting in the build up of lactic acid.
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During recovery, why should the breathing and heart rates stay high?
-So rapid blood flow can carry lactic acid away to the liver -Also so that extra oxygen can be supplied which enables the liver to break down the lactic acid
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What are the two possible ways required to measure the rate of respiration?
Measuring how much oxygen is used up or measuring the rate of how much carbon dioxide is produced
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What does RQ stand for?
Respiratory Quotient
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What is the equation using these three previously mentioned things?
RQ = carbon dioxide produced/oxygen used
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What is the metabolic rate?
The sum of all the reactions that are occurring in the body. If the metabolic rate is high, more oxygen is needed as aerobic respiration is faster
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What is respiration controlled by?
Enzymes
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What affects these enzymes from working normally?
Changes in pH and temperature. Therefore this affects the respiration rate.
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Other cards in this set

Card 2

Front

What does aerobic respiration involve?

Back

Oxygen

Card 3

Front

What is the symbol equation for aerobic respiration?

Back

Preview of the front of card 3

Card 4

Front

What happens during exercise?

Back

Preview of the front of card 4

Card 5

Front

What do the muscles then start to use?

Back

Preview of the front of card 5
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