OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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RNA is double stranded
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RNA is single stranded
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RNA is found only in the nucleus
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RNA contains nitrogenous bases
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Detailed explanation-1: -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. DNA replicates on its own, it is self-replicating. RNA does not replicate on its own.
Detailed explanation-2: -Correct answer: RNA contains uracil, while DNA contains thymine. Explanation: RNA is different than DNA in that it 1) is single stranded (DNA is double stranded), 2) contains uracil (DNA contains thymine instead), and 3) contains a ribose sugar (DNA contains a deoxyribose sugar).
Detailed explanation-3: -DNA is usually double-stranded, with both strands parallel in directionality, whereas RNA is usually single-stranded. DNA nucleotides lack an oxygen atom, whereas RNA nucleotides can form an additional covalent bond with the extra oxygen atom.