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Video Assignment 3

Video Assignment 3

Q Hello Everyone, Please view the following videos and submit your summary. Follow the guidelines as stated in your syllabus. Lab Video Summaries: So there will be topics that we normally cover in the lab that are not found in Labster, so for those topics I will upload videos as assignments that you will be required to watch and then write a summary about the video content. Summarize the major points of the video. Format should be: Title of First Video Summary of the major points of video in your own words. Must be at least 2 paragraphs with at least 5 sentences in each paragraph. Title of Second Video Summary of the major points of video in your own words. Must be at least 2 paragraphs with at least 5 sentences in each paragraph. Etc…… Summary must be 2 pages in length minimum. The summary should be typed, single-spaced, 12-point font, Times New Roman Style Font, 1-inch margins, and spell checked.. No huge spaces in between paragraphs either, only single spacing for entire length of paper. Important: No late papers will be accepted! No Exceptions!!!

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Summary of Video 1: In the video 1, the video is about to determine chemical composition of the cells. In this video the Lugol’s test has been performed and shown step by step with result. The test is used to identify the starch, that is, it is the identification test of carbohydrates. It is mainly an indicator and due to interaction of iodine, the starch reacts with this indicator to give a color change. This solution is used as an indicator test for the presence of starches in organic compounds, with which it reacts by turning a dark-blue/black. Elemental iodine solutions like Lugol's will stain starches due to iodine's interaction with the coil structure of the polysaccharide. In this reaction, in the video, some test tubes containing different solutions of samples were tested and some of the tubes showed the positive test, that is deep blue color change but some did not.