THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DNA has ribose sugar, RNA has deoxyribose
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DNA contains the base uracil, RNA has the base thymine
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DNA is double stranded, RNA is single stranded
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DNA can leave the nucleus, RNA cannot leave the nucleus.
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Detailed explanation-1: -Whereas DNA always occurs in cells as a double-stranded helix, RNA is single-stranded.
Detailed explanation-2: -Like DNA, RNA can form right-handed double helices. In contrast to DNA, RNA forms an A-form helix with a radius of ∼1.2 nm and a length increase per base pair of ∼2.8 Å, ∼20% wider and shorter than B-form dsDNA (Fig.
Detailed explanation-3: -DNA is a double-stranded molecule that has a long chain of nucleotides. RNA is a single-stranded molecule which has a shorter chain of nucleotides.
Detailed explanation-4: -There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.