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Exam Questions - AS Level Biology

1) Nucleic acids such as DNA or RNA are made up of a series of nucleotides joined together state the 3 main components of these and specify if there is any difference between the DNA and RNA version.

2) There are three main types of RNA state the names of these, where two of them can be located and any possible role within the cell.

3) Explain how the two strands of DNA are held together.

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