TRIPLE SCIENCE: Biofuels 0.0 / 5 ? BiologyBiotechnology and the use of microbes in industryTriple ScienceGCSEAQA Created by: AngeleSofiaCreated on: 06-06-16 20:42 Is fermentation aerobic or anaerobic respiration? Anaerobic respiration. 1 of 9 What does fermentation by yeast produce? Ethanol. 2 of 9 Ethanol is made by fermenting what? Sugar, e.g. glucose. 3 of 9 Name the main two components of biogas. Methane and carbon dioxide. 4 of 9 Name materials that might be used as food for the microorganisms used in producing biogas. Human sewage, Animal dung, kitchen waste, sludge waste from factories. 5 of 9 Suggest three variables, other than temperature, that might affect the rate of bio production. 1. Amount of waste. 2. Amount of bacteria. 3. pH. 6 of 9 Describe three possible advantages for villages having a biogas generator. 1. Cheaper fuel costs. 2. Disposes of waste. 3. Less disease and pollution. 7 of 9 Does biogas produce significant amounts of sulphur dioxide or nitrous oxides? No - so it doesn't cause acid rain. 8 of 9 Name the fungus that is used to produce mycoprotein. Fusarium. 9 of 9
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