chemcon - Donna Wiersema HCCS SW COLLEGE CONCEPTS l. 7. 8....

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Unformatted text preview: Donna Wiersema HCCS SW COLLEGE CONCEPTS l. 7. 8. 9. KEY CONCEPTS : CHEMISTRY The fundamental unit of matter, both living and non-living matter, is the Atoms are composed of subatomic particles called , and are found in the nucleus are found in and of an atom, while are composed of identical atoms. There are naturally occurring . Give the symbol for the following elements and mention something significant about it for a living organism : a. Carbon b. Nitrogen 0. Phosphorus d. Copper e. Hydrogen f. Oxygen The sum of the and mass. gives the atomic Atomic is given by the number of protons. Two or more atoms joined together is called a Name 3 types of chemical bonds: a. b. c. 10. 1'1. 12. 13. 14. 15. 16. 17. 18. 19. In the chemical formula C H O , there are hydrogen atoms, and carbon atoms, oxygen atoms. Oxidation and reduction reactions are sometimes called reactions. A is a homogenous mixture of a and a solvent. A solution is made by dissolving one gram-molecular weight of a substance in one liter of water. Define: a. pH b. acid c. base The neutral point of the pH scale is and this is the same as an H+ concentration of Organic chemistry is the chemistry of compounds. Draw : a. a linear carbon chain b. a ringed carbon molecule A is a combination of atoms that when added to a carbon skeleton or organic compound, confer unique properties and reactivity on the compound or molecule. Draw and name 5 functional groups: a. b. d. e. 20. Name the four classes of macromolecules that comprise or make up ‘ living things. a b. c. d. 21. Carbohydrates contain the elements _, , and 22. Carbohydrates may be simple sugars or monosaccharides, such as , the hexose or the pentose 23. Examples of disaccharides, two simple sugars joined together, include and 24. Write the linear and the ringed molecular structure of glucose. 25. A is a polymer of subunits called monosaccharides. 26. Give 3 examples of polysaccharides and their functions. a. b. 27. contain long or complex hydrocarbon chains that are nonpolar and thus do not dissolve in water. 28. Three groups of lipids are the , the , and the A fat or triglyceride is composed of one molecule of and molecules of fatty acids. 30. The major class of lipids in cell membranes is the 31. is a complex molecule of four interlocking rings known as a , and is found in the cell membranes of animal cells. 32. Draw the molecular structure of a phospholipid. 33. The subunits of proteins are called 34. There are biologically important ones and they are joined together by bonds called bonds. 35. Give the general formula for an amino acid. 36. Show how two amino acids are linked together by a peptide bond. 37. Define tertiary structure of proteins. 38. Two types of nucleic acids are and 39. Nucleic acids are composed of subunits called 40. The nitrogenous bases in DNA are ’ 41. The purines in DNA are and 42. A pyrimidine in RNA that is not found in DNA is 43. The backbone of the DNA double helix is made up of molecules of and 44. The two strands of the DNA double helix are held together by bonds. 45. Base pairing rules state that always bonds to thymine, and guanine always bonds to 46. Three types of RNA and their functions are: a. b 47. A high energy compound that takes part in most energy exchanges in a cell is 48. The process by which the DNA molecule copies itself is called 49. The pentose sugar in DNA is and in RNA is 50. James Watson, Sir Francis Crick, Maurice Wilkins, and Rosalind Franklin were the scientists involved in working out the molecular structure of ...
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chemcon - Donna Wiersema HCCS SW COLLEGE CONCEPTS l. 7. 8....

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