44. Which pair are isomers of pentane? CH CHS 49. The group of biologically important organic compounds responsible for storage and transfer of information is A. carbohydrates. B. phospholipids. C. polypeptides. D. nucleic acids and CH, A CH CH hond B. and CH 50. When a protein is boiled, it loses all levels of organization except the primary level. When this happens, the protein is said to be A. hydrolyzed B. dehydrated. C. denatured D. Plasmolyzed. and CHE and CH D. CH3 45. What type of reaction is exemplified by the given reaction? HBr H H + HBr - H-CEC-C-H H-C-C-C-H H H H A. addition B. oxidation C. substitution D. elimination 46. The reactions in which polymers are produced are called reactions. A. Synthesis B. Polymerization C. Decomposition D. Single displacement 47. An example of a natural polymer is A nylon B. dacron C. Polyethylene. D. rubber 48. Which if the following is NOT a property of polyethylene? A. Polyethylene is flexible. B. Polyethylene is tough C. Polyethylene is easily reformed into new products D. Polyethylene is expensive to produce