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Which of these nucleotide bases is NOT present in RNA: Cytosine, Thymine, Guanine, Adenine, Uracil

The correct answer is: Thymine.The four bases found in DNA molecules are Cytosine, Guanine, Adenine and Thymine but in RNA molecules, the Thymine base is replaced by Uracil.

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Which of these nucleotide bases is NOT present in RNA: Cytosine, Thymine, Guanine, Adenine, Uracil

Related Biology A Level answers

Give one reason as to why is it important that Carbon dioxide (CO2) is removed from the blood ?

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(a) (i) Give a biological molecule that contains: 1. nitrogen 2. phosphorous (ii) Describe the role of microorganisms in producing nitrates from the remains of dead organims.

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