Energy from respiration
- Created by: boy_repellent
- Created on: 10-04-14 17:37
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- Energy in respiration
- Aerobic respiration
- Equation: glucose + O2 - Co2 + water (+ energy)
- The process uses glucose and oxygen to release energy
- Carbon dioxide and water are produced as waste products
- The process takes place in the mitochondria and are controlled by enzymes
- energy released may be used by organisms to:
- build larger molecules from smaller ones
- enable muscle contraction in animals
- maintain a constant body temp in mammals/birds
- build sugars, nitrate & other nutrients into amino acids and then proteins in plants
- Effect of exercise on the body
- muscles need more energy so they can contract
- the rate at which oxygen and glucose reach muscle cells for aerobic respiration needs to increase
- extra waste Co2 needs to be removed
- heart rate increases and blood vessels dilate- this allows more blood to reach muscles
- breathing rate and the depth of each breath increase- allowing greater uptake of O2 and release of Co2
- muscles store glucose as glycogen- glycogen is converted back to glucose for use during exercise
- Anaerobic respiration
- if you use muscles over a long period then they will get fatigued
- when muscles can't get enough oxygen for aerobic respiration they respire anaerobically
- lactic acid is produced because glucose isn't completely broken down
- lactic acid build up causes muscle fatigue
- blood flow removes lactic acid
- lactic acid build up causes muscle fatigue
- less energy is released from glucose
- if you use muscles over a long period then they will get fatigued
- Aerobic respiration
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