IB Biology HL A1.2.2 Components of a Nucleotide Questions

Practise IB Biology HL A1.2.2 by drawing DNA or RNA nucleotides, calculating phosphate counts and classifying purines and pyrimidines.

Exam points

Draw and label DNA or RNA nucleotides with the correct pentose, phosphate and nitrogenous base.
Calculate phosphate groups from DNA base counts and classify purines or pyrimidines.

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Study A1.2.2—Components of a nucleotide conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

[Maximum number: 3]

Draw a labelled diagram to show the structure of a single nucleotide of RNA.

official ribonucleotide diagram answer

Ribose drawn as a pentagon and labelled.
Base linked correctly to $C_{1}$ of ribose and labelled.
Phosphate linked correctly to $C_{5}$ of ribose and labelled.

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IB Biology HL A1.2.2 Components of a Nucleotide Questions question 1