DNA and RNA Structure
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10 questions
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- Q1Which component of DNA differs from that of RNA?UracilCytosineThymineAdenine30s
- Q2What is the primary structural difference between RNA and DNA?Both DNA and RNA are composed of the same number of basesRNA contains thymine, while DNA contains uracilDNA is made of ribose sugar, while RNA is made of deoxyribose sugarRNA is single-stranded while DNA is double-stranded30s
- Q3Which sugar is found in the backbone of RNA nucleotides?MannoseGlucoseRiboseDeoxyribose30s
- Q4Which base is present in RNA but not in DNA?UracilThymineCytosineGuanine30s
- Q5What is the base pairing rule for DNA?Cytosine pairs with Thymine, and Guanine pairs with AdenineAdenine pairs with Thymine, and Guanine pairs with CytosineAdenine pairs with Guanine, and Thymine pairs with CytosineAdenine pairs with Uracil, and Guanine pairs with Thymine30s
- Q6What type of bond connects the sugar and phosphate groups in a DNA molecule?Glycosidic bondIonic bondPhosphodiester bondHydrogen bond30s
- Q7What is the shape of DNA as described by the Watson-Crick model?Triple helixCircularSingle strandDouble helix30s
- Q8Which of the following pairs of bases would be complementary in RNA?Cytosine and AdenineGuanine and ThymineThymine and UracilAdenine and Uracil30s
- Q9What feature distinguishes RNA from DNA in terms of structure?RNA has a double helix structureRNA contains a hydroxyl group on the 2' carbon of its sugarRNA has a larger overall size than DNARNA contains thymine instead of uracil30s
- Q10What role do hydrogen bonds play in the structure of DNA?They form covalent bonds between nucleotidesThey connect ribose sugars in RNAThey are the main component of the DNA backboneThey hold the two strands of DNA together30s