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Establish the cytoplasm concentration of carrot cells.
Member rating: No Rating | Words: | Submitted: Thu Jan 13 2005
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Biology Carrot Experiment Aim: To establish the cytoplasm concentration of carrot cells. Method * Use a pipette to measure the different volumes of sucrose and distilled water into six test tubes (use different pipettes for water and sucrose solutions to avoid contamination). In the following ratios in order to get the correct concentrations correct. Sucrose Concn Volume of sucrose cm3 Volume of water cm3 0 0 20 0.2 4 16 0.4 8 12 0.6 12 8 0.8 16 4 1 20 0 * Use a scalpel to cut 18 even-sized pieces of carrot approximately 10x5x5 millimetres in size. * Weigh three pieces of carrot then place them into one of the test tubes containing the sucrose solution and cover with Clingfilm. * Repeat this process for the six test tubes containing the sucrose solution * Leave for as long as possible at least 48 hours. Results Sucrose Conc. Volume of sucrose cm3 Volume of water cm3 Initial Mass of carrot (g) Final Mass of carrot (g) Change in mass % 0 0 20 3.51 4.03 14.81% 0.2 4 16 3.38 3.45 2.07% 0.4 8 12 3.3 3.33 0.91% 0.6 12 8 3.22 3 -6.83% 0.8 16 4 3.54 3.05 -13.84% 1 20 0 3.55 2.73 -23.10% Graph Conclusion My results show that in the sucrose concentrations 0-0.38 water entered the carrot cells...
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