53. This type of bond requires a sharing of electrons. A Covalent B) Ionic C) Hy

Question

53. This type of bond requires a sharing of electrons. A Covalent B) Ionic C) Hydrogen D) Atomic E) Electronic 54, This is the type of bond between the atorms forming water A) Nonpolar covalent B) Polar covalent C) Hydrogern D) lonic E) Atomic 55. This is a negatively charged atom. A) Superoxide B) Isotope C) Catalyst Ion E) Valence 56. Which of the following bonds provides the helical structure of DNA? A) Nonpolar covalent B) Polar covalent C) Hydrogen D) Ionic E) Atomic 57. An enzyme acts to A) Raise the activation energy needed Lower the activation energy needed C) Convert the activation energy into potential D) Convert the activation energy into kinetic E) Break a chemical reaction 58. This type of reaction is where the bond being formed requires more energy than that being broken down thereby requiring that energy be added. A) Exergonic ) Endergonic C) Potential D) Kinetic E) Activation Page 8 of 29

Explanation / Answer

53. A. covalent

54. B. polar covalent

55. A. superoxide

56. C. hydrogen bond

57. B. lower the activation energy needed

58. B. endergonic

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