IB Biology HL A1.2.2 Components of a Nucleotide Questions

Identify the phosphate group, pentose sugar and nitrogenous base in a nucleotide. Compare deoxyribose in DNA with ribose in RNA, and classify A and G as purines and C, T and U as pyrimidines.

Exam points

Identify the phosphate group, pentose sugar and nitrogenous base that make up a nucleotide.
Distinguish deoxyribose in DNA from ribose in RNA, and classify A/G as purines and C/T/U as pyrimidines.

[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