BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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RNA contains Ribose
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RNA is single stranded
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RNA contains Uracil
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RNA makes DNA
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Detailed explanation-1: -RNA does not have double stranded -helix structure.
Detailed explanation-2: -The correct answer is (C) Ribonucleotides contain a phosphate group.
Detailed explanation-3: -Hence, the correct answer is ‘One of the bases from DNA is replaced by uracil’.
Detailed explanation-4: -Hence, the proper answer is ‘One of the bases from DNA is replaced by uracil’. So, B is the correct option. Note: DNA could be a double-stranded molecule, whereas RNA could be a fibre molecule. DNA is stable beneath alkalic conditions, whereas RNA isn’t stable.
Detailed explanation-5: -Unlike DNA, thymine (T) is not present in RNA molecules, T is replaced by the uracil (U) base in RNA. The statement that is not true about DNA is that DNA contains adenine, guanine, cytosine, and uracil. So, the correct option is (e).