B3c - Respiration

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Why is Respiration important?
Respiration is important because it provides energy needed for life procesess in plants and animals. Life processes such as protein synthesis, muscle contraction and control of the body temp in mammals.
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What is Aerobic Respiration?
Aerobic Respiration is the release of energy from glucose with the presence of oxygen
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What is the Word Equation for Aerobic Respiration?
Glucose + Oxygen = Carbon Dioxide + Water + Energy
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What is the Symbol Equation for Aerobic Respiration?
C H O + O = CO + H O
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What happens during exericse?
Muscles demand more energy meaning that respiration must go fast to release energy. Breathing and pulse rate increase to deliever oxygen and glucose to muscles quickly and to remove carbon dioxide from the muscles.
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Describe an investiagation that measures the resting pulse rate and recovery time after exercise.
1. Record resting heart rate. 2. Record Heart Rate, immediatley after exercise. 3. Record your heart rate every minute until it returns to resting
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Why is the rate of respiration influenced by the changes in temperature and pH?
Respiration is an enzyme-controlled reaction, the rate is influenced by pH and temperature.
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How is the Rate of Respiration measured?
It could be measured by using a respirometer, The faster the organism respire, the more oxygen it takes and greater rate of carbon dioxide is released.
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What is a 'Metabolic Rate'?
Your Metabolic Rate is the amount of energy your body needs. Aerobic Respiration provides your body with energy. Therefore your metabolic rate is estimated by measuring oxygen uptake
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What is the role of 'ATP' in cells?
ATP means 'Adenosine Triphosphate'. The ATP molecule is used as an energy source for many processes inside the cell. When respiration releases energy, it is stored in the ATP.
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How do you calculate Respiratory Quotient?
RQ = Carbon Dioxide Produced / Oxygen Used
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What is Anaerobic Respiration?
It is the release of energy from glucose in the absence of oxygen
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What is the word equation for Anaerobic Respiration?
Glucose = Lactic Acid + Small Amount of Energy
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Compare the amount of energy produced via Anaerobic Respiration and Aerobic Respiration
Anaerobic Respiration produces much less energy per glucose molecule than aerobic respiration.
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When does Anaerobic Respiration occur?
It occurs when muscles work too hard and the lungs/the circulatory system cannot deliver oxygen to break the available glucose through aerobic respiration.
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What happens during Anaerobic Respiration?
Small amounts of energy is released through the incomplete breakdown of glucose.
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What is Lactic Acid?
Lactic Acid is a waste product produced during anaerobic respiration due to incomplete breakdown of glucose. It is toxic to cells and when it builds up in muscles it can cause pain and fatigue.
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Why should Lactic Acid be broken down?
Lactic Acid must be broken down to avoid cell damage and to relieve the feeling of fatigue.
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How is Lactic Acid broken down during recovery?
Hard exercise causes the lack of oxygen in cells which causes the incomplete breakdown of glucose, forming lactic acid. Heavy breathing replaces the absence of oxygen, allowing aerobic respiration to take place. High heart rate stays*
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What is Oxygen Debt?
Oxygen Debt is the obtaining of extra oxygen to remove the lactic acid.
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Card 2


What is Aerobic Respiration?


Aerobic Respiration is the release of energy from glucose with the presence of oxygen

Card 3


What is the Word Equation for Aerobic Respiration?


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Card 4


What is the Symbol Equation for Aerobic Respiration?


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Card 5


What happens during exericse?


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The word equation for aerobic respiration is incorrect:/

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