Science B4 0.0 / 5 ? ScienceElectricityGCSEOCR Created by: RichardtolmanCreated on: 29-03-16 17:32 What is the Function of the Nucleus? Contains DNA. 1 of 20 What is the Function of the Cytoplasm? To create Enzymes. 2 of 20 What is the Function of the Cell Membrane? Controls what goes in and out the Cell. 3 of 20 What is the Function of the Mitochondira? Where reactions take place e.g Anaerobic Respiration. 4 of 20 Name Three things that plant cells have and animal cells don't. Vacuole, Chloroplasts, Cell wall. 5 of 20 What is a Vacuole? A weak solution of salts and sugar. 6 of 20 Yeast cells have mitochondria and a nucleus. True or False? True! 7 of 20 What type of cells have a cell wall but no Nucleus? Bacteria. 8 of 20 Give a definition of an enzyme? Proteins that speed up Chemical Reactions. 9 of 20 Describe the 'Lock and Key' Model. This is when a substrate and a enzyme lock together without being denatured. 10 of 20 Name Two things that affect how quickly an enzyme works Temperature, PH 11 of 20 What is a Denatured enzyme? An enzyme that doesn't fit the Lock and Key Mechanism. 12 of 20 Name Three things that the energy released by respiration is used for? Movement, Active transport, Synthesis of Large Molecules. 13 of 20 What type of Respiration, aerobic or anaerobic, releases more energy per glucose molecule? Aerobic. 14 of 20 What is the word equation for aerobic respiration? Glucose+Oxygen --> Carbon dioxide + Water (+ Energy Released) 15 of 20 What is the symbol equation for aerobic respiration? C6,H12,O6+6O2 --->6CO2+ 6H2O 16 of 20 Give an example of when human cells respire anaerobically? Bacterial Cells, Human Cells. 17 of 20 Briefly describe how bread is made using yeast The yeast ferment the carbohydrates in the flour and release Carbon dioxide- this causes the bread to rise. 18 of 20 Briefly describe the process of Photosynthesis Photosynthesis is a series of chemical reactions that uses energy from sunlight to produce food. 19 of 20 What is the word equation for Photosynthesis. Carbon D 20 of 20
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