Biology 0.0 / 5 ? BiologyRespiration and exerciseGCSEEdexcel Created by: EndleyrCreated on: 17-05-22 11:01 What is respiration? A process that releases energy in the form of ATP from the breakdown of organic compounds (e.g. glucose) 1 of 18 What is ATP? Short term energy store in cells Universal energy carrier 2 of 18 Why must respiration occur continuously in living cells? ATP is required for many essential processes in living cells e.g. movement, homeostasis and active transport 3 of 18 What type of reaction is respiration? It is an exothermic reaction that releases energy in the form of heat 4 of 18 Where do plants get the glucose required for respiration? They produce their own glucose during photosynthesis 5 of 18 Where do animals get the glucose required for respiration? From the breakdown of carbohydrates that they have ingested 6 of 18 What are the 2 types of respiration? Aerobic respiration Anaerobic respiration 7 of 18 What is aerobic respiration ? Respiration in the presence of oxygen that forms ATP from the breakdown of glucose 8 of 18 What is the word equation for aerobic respiration? Glucose + oxygen -> carbon dioxide + water (+ ATP) 9 of 18 What is the symbol equation for aerobic respiration? C6H12O6 + 6CO2 -> 6CO2 + 6H2O ( + ATP) 10 of 18 What is anaerobic respiration? Respiration that takes place without oxygen and forms ATP from the breakdown of glucose 11 of 18 When may anaerobic respiration take place in human cells? During vigorous exercise 12 of 18 When may anaerobic respiration take place in plant cells? If the soil becomes waterlogged 13 of 18 What is the word equation for anaerobic respiration in muscle cells? Glucose -> lactic acid (+ ATP) 14 of 18 Why may anaerobic respiration in muscle cells eventually stop? Lactic acid build-up inhibits anaerobic respiration 15 of 18 What are the symptoms of lactic acid build-up? Cramp and fatigue 16 of 18 What is the word equation for anaerobic respiration in plant and yeast cells? Glucose -> ethanol + carbon dioxide (+ ATPA) 17 of 18 Is aerobic or anaerobic respiration more efficient? Explain why Aerobic respiration is more efficient as it produces more molecules of ATP than anaerobic respiration 18 of 18
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