Chapter 3 Questions

Chapter 3 Questions - Chapter 3 The Chemical Basis of Life...

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Chapter 3 The Chemical Basis of Life II: Organic Molecules Student: ___________________________________________________________________________ 1. Which of the following is an important feature of carbon and that makes life possible? A. Carbon can form a maximum of 8 covalent bonds. B. Carbon can form a maximum of 6 covalent bonds. C. Carbon can form a maximum of 4 covalent bonds. D. Carbon can form a maximum of 2 covalent bonds. E. None of the choices are possible for carbon. 2. Which of the following are important features of carbon and the diversity of organic molecules? A. Carbon can form up to 4 covalent bonds with other elements. B. Carbon bonds may occur in multiple different configurations such as linear, ringlike, and highly branched. C. Carbon can form both polar and nonpolar covalent bonds with various elements. D. Carbon bonds are stable at the range of temperatures associated with life. E. All the choices are correct. 3. Which of the following molecules is nonpolar? A. C 2 H 5 COOH B. C 2 H 6 C. R-NH 2 D. C 3 H 7 OH E. C 5 H 10 O 5 4. Which element(s) is common to all organic molecules? A. oxygen B. nitrogen C. hydrogen D. carbon E. both nitrogen and carbon 5. Two molecules with identical molecular formulas but that have different structures are called A. polymers. B. isomers. C. carboyhydrates. D. hydrocarbons. E. ring structures.
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6. Which of the following has identical molecular formulas but different structures and characteristics? A. isomers B. sterioisomers C. enantiomers D. isomers, but not sterioisomers E. isomers, sterioisomers, and enantiomers 7. Organic molecules with identical molecular formulas and that are structurally mirror images of each other are most specifically referred to as A. polymers. B. mimics. C. enantiomers. D. hydrocarbon rings. E. saturated fatty acids. 8. Which of the molecules is polar and acts like a base? A. R-NH 2 B. R-CO-R C. R-OH D. R-PO 4 E. R-SH 9. Which functional group characterizes alcohols? A. NH 2 B. COOH C. PO 4 D. SH E. OH 10. Which functional group forms covalent bonds and contributes to tertiary structure of proteins? A. NH 2 B. COOH C. PO 4 D. SH E. OH
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11. Fuels such as gasoline are nonpolar and high in energy because they are largely composed of A. sulfates. B. hydrocarbons.
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Chapter 3 Questions - Chapter 3 The Chemical Basis of Life...

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