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categoryالكيمياء schoolبكالوريوس event_available2026-07-15

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9. Like blood and other body fluids, saliva can be collected at a crime scene and used for DNA analysis during a forensic investiga DNA is found in cells, but saliva is an acellular fluid. What do you think is the origin of the DNA found in saliva 10. Starch and disaccharide tests were completed for three substances: X. Y. and Z. The test results are shown in the following table.up Compare the three substances in terms of their starch and disaccharide content. Starch and Disaccharide Tests for Various Substances Solution turned a Substance Test Results x Starch test dark blue Disaccharide test No change in color Conclusions Y Starch test Disaccharide test Solution turned blue, but not as dark as substance X Solution changed from blue to yellow and then red Z Starch test No change in color DHOW Disaccharide test No change in color 11. Class project: 2 In this laboratory exercise, you examined the effect of pH on amylase activity. Temperature is another factor can inace effectiveness of an enzyme. Design an experiment that tests the effect of temperature on amylase activity. Your experimental d should include the following components: An introduction and rationale for the experiment A list of materials that will be used A description of positive and negative control tests A description of methods for testing the effect of temperature on amylase activity Tables for recording data adow Conduct the experiment that you designed and write a discussion that interprets and critically analyzes the data that you

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