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Name: _________________ ORGANIC MOLECULES WEBQUEST Links are on External Links on Blackboard DIRECTIONS: Go to the following website on CARBOHYDRATES and answer these questions: http://www.chem4kids.com/files/bio_carbos.html 1. Carbohydrates are made up of the following elements: a. b. c. 2. Give 4 examples of carbohydrates: o o o o 3. What carbohydrate is stored in plants? DIRECTIONS: Go to the following website on CARBOHYDRATES and answer these questions: http://www.wisc-online.com/objects/index_tj.asp?objid=AP13104 1. What elements are carbohydrates generally composed of? 2. What is the type of sugar found in fruit called? 3. What is the common name for sucrose? 4. Polysaccharides include starch, cellulose, and glycogen. These long, chain-like polymers make ideal storage products due to their __________. 5. What is meant by “insolubility”? Why is that good? Draw a picture of glucose and deoxyribose below. DIRECTIONS: Go to the following website on PROTEINS and answer these questions: http://www.chem4kids.com/files/bio_proteins.html 1. What are proteins made up of? 2. What are the four protein structures? Next: Draw sketches of the four types of protein structures below. DIRECTIONS: Go to the following website on PROTEINS and answer these questions: http://www.wisc-online.com/objects/index_tj.asp?objid=AP13304 1. Proteins are constructed from approximately 20 ________________. 2. A protein molecule is determined by the _____________ of amino acids. 3. Why do vegetarians have to make sure they eat a wider variety to make sure they get all of the amino acids they need? DIRECTIONS: Go to the following website on LIPIDS and answer these questions: http://www.wisc-online.com/objects/index_tj.asp?objid=AP13204 1. Lipids are soluble/insoluble in water. Circle one. 2. What happens during Dehydration Synthesis (hint: it involves chains & a molecule) 3. Saturated fatty acids originate from where? 4. Unsaturated fatty acids originate from where? 5. Why are phospholipids so important to cells? 6. List 3 positive things cholesterol does for the body o o o Draw pictures of saturated and unsaturated fatty acids below. DIRECTIONS: Go to the following website on NUCLEIC ACIDS and answer these questions: http://www.chem4kids.com/files/bio_nucleicacids.html 1. The __________________ are the building blocks of living organisms. 2. ________________ is just one type of nucleic acid. 3. List 4 types of nucleic acids (NA’s): o o o o Draw pictures of the four nucleic acids below: DIRECTIONS: Go to the following website on Protein Synthesis and answer these questions: http://www.wisc-online.com/objects/index_tj.asp?objID=AP1302 1. Why does DNA unwind? 2. After creation, where does the mRNA go? Through what? 3. Why does mRNA bind with a ribosome? 4. What’s the name for the end of the tRNA that has a particular sequence of three nucleotides? 5. What does the anticodon match up to when it joins the chain? 6. Now that the “load” of amino acids have been released, the amino acids link up to form __________________. 7. What happens to the mRNA when protein production is complete? AMINO ACIDS USE THE WEBSITE TO COMPLETE THE CHART AND ANSWER THE QUESTIONS. http://www.ionsource.com/virtit/VirtualIT/aainfo.htm AMINO ACID ABREV 1. Gly 2. Ala 3. Leu 4. Val 5. Ile 6. Phe 7. Trp 8. Tyr 9. Pro 10. Met 11. Cys 12. Thr 13. Ser 14. Asn 15. Gln 16. Asp 17. Glu 18. His 19. Lys 20. Arg 1. 2. 3. 4. 5. 6. 7. 8. NAME LETTER SYMBOL ESSENTIAL OR NOT Gly is the ______________ amino acid. Ala was first isolated from ________. Leu was first isolated from ___________. Phe: Humans with ___ ___ ___ cannot metabolize this amino acid. Trp: This is the ___________ amino acid. Arg: This is the _______ _______ amino acid. What is meant by “essential” amino acid? What other “scientific graphic device” does the image on the site look similar to?