Study%20Questions-Chapter-4-1 - BIOL. 1305 Fall 2010 (CRN#...

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BIOL. 1305 – Fall 2010 (CRN# 12682) Study Questions Chapter 4: Nucleic Acids and the Origin of Life 1. The “backbone” of a nucleic acid molecule is made of a. nitrogenous bases. b. alternating sugars and phosphate groups. c. purines. d. pyrimidines. e. nucleosides. 2. Which of the following is not a difference between DNA and RNA? a. DNA has thymine, whereas RNA has uracil. b. DNA usually has two polynucleotide strands, whereas RNA usually has one strand. c. DNA has deoxyribose sugar, whereas RNA has ribose sugar. d. DNA is a polymer, whereas RNA is a monomer. e. In DNA, A pairs with T, whereas in RNA, A pairs with U. 3. According to the principle of complementary base pairing, purines always pair with a. deoxyribose sugars. b. uracil. c. pyrimidines. d. adenine. e. guanine. 4. All of the following bases are found in DNA except a. thymine. b. adenine. c. uracil. d. guanine. e. cytosine 5. The diversity in DNA molecules is due to a. physical shape differences of the molecule. b. functional differences in DNA molecules.
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This note was uploaded on 04/03/2011 for the course BIOL 1305 taught by Professor Staff during the Spring '08 term at Texas El Paso.

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Study%20Questions-Chapter-4-1 - BIOL. 1305 Fall 2010 (CRN#...

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