Chapter 4 quiz

Chapter 4 quiz - 1. DNA is more resistant to hydrolysis...

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1. DNA is more resistant to hydrolysis than RNA. What feature of DNA is responsible for  this characteristic?  a. The difference in base composition between DNA and RNA b. The difference in the backbone linkages in DNA and RNA c. The absence of a 2'-hydroxyl group in deoxyribose Correct. The presence of a 2'-hydroxyl group in RNA is responsible for its greater  susceptibility to hydrolysis  2. The difference between a nucleoside and a nucleotide is that  a. they contain different sugars b. the bases are attached to the sugars at different carbons c. one contains phosphate attached via an ester linkage Correct. Nucleotides are phosphate esters of nucleosides  3. The major interaction stabilizing the double helical structure of DNA is  a. the favorable charge-charge interactions between the two strands b. hydrogen bonds between bases on the two strands c. hydrogen binding between the backbone components of the two strands Correct. This interaction not only stabilizes the interaction between the two strands but is 
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Chapter 4 quiz - 1. DNA is more resistant to hydrolysis...

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