IB Biology: Theme/Unit D end of unit exams bundle (first exams 2025)

This bundle consists of 12 end of unit exams for:

D1.1: DNA replication
D1.2: Protein synthesis
D1.3: Mutations and gene editing
D2.1: Cell and nuclear division
D2.2: Gene expression
D2.3: Water potential
D3.1: Reproduction
D3.2: Inheritance
D3.3: Homeostasis
D4.1: Natural selection
D4.2: Stability and change
D4.3: Climate change

Each exam can be used as an end of topic exam and consists of:

• 8-10 multiple choice questions
• Questions using IB command terms: state, explain, analyse, describe
• Data based question
• Mark schemes included