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IB Biology SL A1.2.2 Components of a Nucleotide Questions

Practise IB Biology SL A1.2.2 by identifying deoxyribose, phosphate and bases in DNA nucleotides and applying base-count data.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Identify phosphate, deoxyribose and nitrogenous-base components and their arrangement in a DNA nucleotide.
  • Calculate total phosphate groups from DNA base-count or percentage data.

Learn this topic

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

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

[Maximum number: 1]

The diagram below represents a DNA nucleotide.

Figure for Question IB Biology SL A1.2.2 Components of a Nucleotide Questions question 1 — IB Biology SL

Identify the phosphate group and deoxyribose.

Phosphate group:
Deoxyribose:

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