Biology - paper 1 (Bioenergetics) 0.0 / 5 ? BiologyBioenergeticsGCSEAQA Created by: rosierabyCreated on: 12-05-18 16:11 What is the balanced symbol equation fro photosynthesis? 6CO2+6H2O-->C6H12O6+6O2 1 of 23 Is photosynthesis an exothermic or endothermic reaction? Endothermic 2 of 23 What can affect the rate of photosynthesis? Temperature, light intensity, carbon dioxide concentration and amount of chlorophyll 3 of 23 In what type of building are limiting factors economically important? Greenhouses 4 of 23 Name three ways in which plants use glucose from photosynthesis Respiration, storage as starch, produce fat/oil for storage, produce cellulose for the cell wall, produce amino acids for protein synthesis 5 of 23 Along with glucose, what do plants need to make proteins? Nitrate ions absorbed from soil 6 of 23 Is respiration an endothermic or exothermic reaction? Exothermic 7 of 23 What does aerobic respiration use? Oxygen 8 of 23 What does anaerobic respiration not use? Oxygen 9 of 23 What is produced in anaerobic respiration (in animals)? Lactic acid 10 of 23 What is produced in aerobic respiration? Carbon dioxide and water 11 of 23 What do organisms need energy for? Chemical reactions to build larger molecules, movement, keeping warm 12 of 23 What is the balanced symbol equation for aerobic respiration? C6H12O6+6O2-->6CO2+6H2O 13 of 23 Which type of respiration releases the least amount of energy? Anaerobic 14 of 23 What is the word equation for anaerobic respiration in animals? Glucose --> lactic acid (+ little energy) 15 of 23 What is the word equation fro anaerobic respiration in plants and yeast? Glucose --> carbon dioxide + ethanol 16 of 23 What is anaerobic respiration in yeast cells called? Fermentation 17 of 23 Give two uses of anaerobic respiration. Manufacture of bread and alcohol drinks 18 of 23 What three changes occur to the heart and lungs when exercising? Heart rate increases, breath rate increases and breath volume increases 19 of 23 What does incomplete oxidation of glucose lead to? Build up of lactic acid and oxygen debt 20 of 23 Where is lactic acid converted back into glucose? Liver 21 of 23 What is oxygen debt? The amount of extra oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from the cells 22 of 23 What is the sum of all reactions in a cell or the body called? Metabolism 23 of 23
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