Biology 0.0 / 5 ? BiologyCellsScottish HighersSQA Created by: AmaraCreated on: 08-09-13 14:17 What is yeast Yeast is a single celled organism, yeast is a fungi therefore it cant photosynthesise, it uses glucose for energy. 1 of 27 Name the gas that causes bread to rise CO2 2 of 27 What is bacteria used to make yoghurt 3 of 27 What is Gashol Petrol mixed with alchol, an alternative gas for vehicles 4 of 27 What sugar does milk contain lactose 5 of 27 what is a renewable souce of energy A source of energy that will never run out 6 of 27 What is Diffusion The movement of molecules from a high concentrationn to a low concentration 7 of 27 Where does oxygen move from and to Oxygen moves from our air sacs in our lungs into red blood cells by diffusion 8 of 27 What is a hyPERtonic solution A stronger solution that has more substances disolved in it than another 9 of 27 What is a hyPOtoic solution A weaker solution that has less substances dissolved in it than another 10 of 27 What is a isotonic solution If both solutions are the same strength 11 of 27 What is Osmosis The movement of molecules from a high concentrationn to a low concentration through a selectively permable membrane 12 of 27 What are enzymes Enzymes are Biological catalysts 13 of 27 What are Catalysts Substances that speed up chemical reactions 14 of 27 What are substrate molecules The substance enzyme acts on 15 of 27 What is a product The product at the end 16 of 27 What is meant by the active site The slot in the enzyme for the substrate 17 of 27 What is meant by 'specific' Each enzyme can only catalayse one reaction because their active site only allow 1 SPECIFIC substrate 18 of 27 What is activation energy Speeding up chemical reactions and REMAIN UNCHANGED BY lowering the energy input that is required 19 of 27 What's Metabolism All the chemical reactions takeing place in an organism 20 of 27 What are the two types of chemical reactions Synthesis (build up) reactions and Degredation (break down) 21 of 27 What does Amylase do Amylase is an enzyme that catalyses the breakdownnbof starch ( the substrate to Maltose) 22 of 27 What can Maltose be broken down to Glucose 23 of 27 What is Catalase An enzyme found in many cells but particulary in Liver cells 24 of 27 What does Catalase break down It Catalyses the breakdown of hydrogen peroxide 25 of 27 What is the equation for hydrogen peroxide Hydrogen peroxide ----------------> water + oxygen 26 of 27 What is the enzyme found in potatoes Phosphorolase 27 of 27
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