name: block: BIOLOGY Biochemistry 3pts 1. score: /42 Sucrose is a _______________________ formed by joining a molecule of ___________________and a molecule of ________________________. 2. How are starches and monosaccharides related? 3. Name the polysaccharide commonly formed by animals. 4. Name the polysaccharide in plants that serves the same function. 5. Since potatoes have starch in them, why don’t they taste sweet after they are boiled? 6. What is cellulose and how is it used in plants? 7. Fats, waxes and oils are all known as …? 2pts 8. 9. How are plant lipids different than animal lipids? Use the building blocks of lipids to draw a simple diagram of a triglyceride. …a lipid? 3pts 10. Which elements make up a carbohydrate? …a protein? 11. Proteins are composed of chains of many smaller molecules known as ….? 12. The chemical bond between two amino acids is called a ___________________ bond. 13. Two amino acids together form a __________________________. 14. Many amino acids together form a __________________________. 15. Sometimes, many polypeptides are required to make a complete ________________________. 16. There are ________# ?________ amino acids that can be found making up proteins? 2pts 17. Name two nucleic acids. 2pts 18. List the similarities and differences between these two. 3pts 27. How do these parts fit together? What bonds with what? (Use a small circle for P, a pentagon for S, rectangle for B) 2pts 19. What are the functions of DNA? 3pts 20. What are the functions of RNA? 28. How does the chemical structure of ribose differ from that of deoxyribose? 21. What is the shape of a DNA molecule? 29. Who proposed the first accurate model of DNA? 22. Which nucleic acid is less complex in structure but more versatile in function? 30. Who took the X-ray diffraction pictures of DNA that were used to make the model? 23. Which one probably evolved first. 24. Following the pairing rules for the bases, list the partners for DNA. 25. What determines which nitrogen bases form pairs in DNA? 26. Describe the parts of a nucleotide. Mrs. Loyd cloyd@waukee.k12.ia.us Page 1 of 1 http://loydbiology.weebly.com 7/12/2016 http://www.mybiology.com