IB DP Biology SL&HL: Past Years Question Bank with Solution

Paper 1

SL

  • Time: 45 minutes (30 marks)
  • 30 multiple – choice questions (core)
  • No marks deducted from incorrect answers
  • NO CALCULATOR ALLOWED
  • Data booklet provided
  • 20% weight

HL

  • Time: 60 minutes (40 marks)
  • 40 multiple – choice questions (core & AHL)
  • No marks deducted from incorrect answers
  • NO CALCULATOR ALLOWED
  • Data booklet provided
  • 20% weight

Paper 2

SL

  • Time: 75 minutes (50 marks)
  • Short – answer and extended – response questions (core)
  • CALCULATOR ALLOWED
  • Data booklet provided
  • 40% weight

HL

  • Time: 135 minutes (95 marks)
  • Short – answer and extended – response questions (core & AHL)
  • CALCULATOR ALLOWED
  • Data booklet provided
  • 36% weight​​​ 

Paper 3

SL

  • Time: 60 minutes (35 marks)
  • Section A: Data – based questions and short – answer questions on experimental work
  • Section B: Short – answer and extended – response questions from one option
  • CALCULATOR ALLOWED
  • Data booklet provided
  • 20% weight

HL

  • Time: 75 minutes (45 marks)
  • Section A: Data – based questions and short – answer questions on experimental work
  • Section B: Short – answer and extended – response questions from one option
  • CALCULATOR ALLOWED
  • Data booklet provided
  • 24% weight

​THE EXPERIMENT is done on ONE OF THE 10 REQUIRED PRACTICALS!

Option B: Biotechnology and bioinformatics (Additional higher level topics)

  • B.4 Medicine
  • B.5 Bioinformatics

Option C: Ecology and conservation (Core topics)

  • C.1 Species and communities
  • C.2 Communities and ecosystems
  • C.3 Impacts of humans on ecosystems
  • C.4 Conservation of biodiversity

Option C: Ecology and conservation (Additional higher level topics)

  • C.5 Population ecology
  • C.6 Nitrogen and phosphorus cycles

Option D: Human physiology (Core topics)

  • D.1 Human nutrition
  • D.2 Digestion
  • D.3 Functions of the liver
  • D.4 The heart

Option D: Human physiology (Additional higher level topics)

  • D.5 Hormones and metabolism
  • D.6 Transport of respiratory gases

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