Key Terms Crossword: Chapter 3

CLUES: Across 3. starting material for steroids, common part of cell membranes 4. the building blocks of polymers 5. a group where carbon is double bonded to oxygen and is also bonded to a hydroxyl group 9. the chain of carbon atoms in an organic molecule 11. a polysaccharide often used to build exoskeletons and cell walls of fungi 14. a class of sugar molecules 15. a structure of polypeptide, similar in shape to DNA 16. water loving 17. same formula but with different structures 18. a bond used to link amino acids 23. the structure of a protein simply with its arrangement of amino acids 27. the monomers that make up nucleotides 29. major component in cell membranes, similar to fats 30. water fearing 31. consisting of all glucose molecules and is used to store excess sugar 33. level of structure - the 3D shape of a polypeptide 34. this makes up genes 35. a chain of amino acids 37. having less than the maximum number of hydrogens 38. when the carbonyl group is at the end of the carbon skeleton 41. a reaction where 1 molecule of water is removed and 2 monomers are linked

Down 1. a group consisting of a carbon double bonded to an oxygen atom. 2. two monosaccharides linked with a dehydration reaction 4. a group where a carbon is bonded to 3 hydrogen atoms 6. when polypeptide chains unravel from heat, salt, or pH changes 7. a structure of a polypeptide with multiple folds 8. the breakdown of polymers 10. a polysaccharide consisting of all glucose molecules and is used for storage in plants 12. when polypeptides are coiled or form other structure and shapes 13. compounds that mix poorly with water 15. have an amino group and a carboxyl group 19. the shape of DNA, not RNA 20. a carbon based molecule 21. a polymer made of amino acid monomers 22. a unique unit of inheritance 24. a group which contains carbohydrates, lipids, proteins, and nucleic acids 25. maximum number of hydrogens 26. when the carbonyl group is in the middle of the carbon skeleton 28. long chains of macromolecules 32. consisting of all glucose molecules and makes up cell walls in plants 35. a group with a phosphorus atom bonded to 4 oxygen atoms 36. level of structure - multiple polypeptides join together, forming a protein 39. composed of only hydrogen and carbon 40. a lipid made from glycerol and fatty acids 42. a group consisting of one hydrogen atom bonded to an oxygen atom which is bonded to the carbon skeleton 43. a group made of a nitrogen bonded to two hydrogen atoms as well as the carbon skeleton

44. acids these are made up of DNA and RNA