TAILIEUCHUNG - Who took Jerell’s iPod? -- An organic compound mystery

Fruits are infected prior to harvest if wounded by insects or other means or the rot may progress from infected stems and branches into the fruit. Postharvest infection of fruit may occur through wounds made during harvesting, transit or storage periods or when warmer fruit are washed in cooler contaminated water (Kucharek and Bartz, 2000). Early detection of spoilage would be advantageous in reducing food loss because there may be interventions that could halt or delay deterioration, and on the other hand food that had reached the end of its designated shelf life but was not spoiled could still be. | Who took Jerell s iPod -- An organic compound mystery1 Jerell is a 10th grade student who works at McDonald s on the weekends. While on break Jerell was studying for his biology test and listening to his new iPod. There were four other workers taking a break at the same time each having something different for lunch. Jerell s girlfriend stopped by near the end of his break and he rushed out to see her and forgot his iPod and biology book in the break room. When he realized he hurried back and found only his biology book and some spilled food. His iPod was gone At first Jerell freaked out but he calmed down when he realized he could use his knowledge of organic compounds to figure out which of his coworkers left the spilled food on his biology book while taking his iPod. What are organic compounds Almost all of the food we eat comes from plants and animals. Plants and animals contain mainly water and organic compounds which are molecules made by living organisms such as plants or animals. 1. The table below lists the most common types of organic compounds found in living organisms. For each type of organic compound give one or two examples and describe one characteristic . whether it is greasy whether it contains genetic material whether there is lots of this type of organic compound in meat or lots in pretzels and potatoes. Type of Organic Compound Examples Characteristic of This Type of Organic Compound Carbohydrates Lipids Nucleic acids Proteins 2. Today you will be testing the substances listed in the following table. Predict whether each substance is an organic compound and if so what type. Substance Do you think this substance is a carbohydrate lipid protein or none of these Vegetable oil Glucose Starch from corn or potatoes Powdered egg whites Water 1 By Drs. Jennifer Doherty Ingrid Waldron and Lori Spindler Department of Biology University of Pennsylvania copyright 2012 adapted from Identity of Organic Compounds from Biology Laboratory Manual A from .

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