ch4 Practice test.pdf - CHAPTER 4 Nucleic Acids and the RNA...

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CHAPTER 4 Nucleic Acids and the RNA World Practice Test This activity contains 20 questions. 1. In the following diagram of a nucleotide, match the letters (a) (c) with the correct structure listed below: 1.1 Nitrogenous base _____ 1.2 Sugar ____ 1.3 Phosphate group ______ 2. In the following diagram, match the letters (a) (e) with the correct base: 2.1 Uracil ____ 2.2 Guanine ___ 2.3 Thymine ___ 2.4 Cytosine ___ 2.5 Adenine ___ c b a a b
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3. Nucleotides are joined by a _____ to form the DNA and RNA polymers that function in the cell. A. sugar-base linkage B. sugar-phosphate linkage C. base-phosphate linkage D. sugar-base-phosphate linkage 4. The wrapping of DNA around proteins is an example of what level of DNA structure? 5. For nucleotides to form in the prebiotic soup, which sugar in the following list would have had to be present in abundant quantities? A. The purine base cytosine (C) pairs with the purine base guanine (G). B. In DNA, the pairing of cytosine (C) with guanine (G) forms two hydrogen bonds. C. Purines pair with other purines, and pyrimidines always pair with other pyrimidines. A. D. In DNA, the purine base adenine (A) pairs with the pyrimidine base thymine (T). 7. Which DNA sequence, written in the 5’ to 3’ orientation, is complementary to 5’ CATGGACTA 3’?
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