B3 - C
- Created by: zoolouise
- Created on: 02-06-15 18:44
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- Respiration
- Why is respiration important?
- Respiration releases energy from food, this energy is trapped in a molecule called ATP.
- The energy from ATP can then be used to provide the energy for different processes in living organisms.
- Respiration releases energy from food, this energy is trapped in a molecule called ATP.
- Aerobic respiration
- C6H12O6+602 > C602 + 6H20
- Glucose + Oxygen > Carbon Dioxide + Water
- Anaerobic respiration
- During exercise, despite the increase in breathing and heart rate, muscles often don't get enough oxygen and therefore anaerobic respiration is used as well as aerobic.
- Glucose > Lactic acid (+energy)
- Anaerobic respiration has disadvantages over aerobic.
- The lactic acid made by anaerobic respiration builds up in muscles, causing pain and fatigue.
- Anaerobic respiration releases much less energy per glucose molecule than aerobic.
- The lactic acid made by anaerobic respiration builds up in muscles, causing pain and fatigue.
- Measuring respiration rate
- RQ = carbon dioxide produced / oxygen used
- It's possible to do experiments to measure the rate of respiration, you can measure how much oxygen is used up - the faster consumed, faster respiration rate
- The rate at which carbon dioxide is made
- The metabolic rate is described as the sum of the reactions occurring in the body.
- Why is respiration important?
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