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 Practice questions in Biology are made available to the students on this website. Detailed quizzes with answers have been compiled for all the courses offered here. For Biology Quizzes please click here.
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About the IB Biology Exam

Date of Exam:

Assessment in IB Biology is made by means of written examination and practical examination.

  1. Written examination weightage....................... 76%
  2. Practical examination........................................ 24%

The exam is divided into three main heads:

  1. Core exam -
  2. Specific for SL (Standard level)
  3. Specific for HL (Higher level)

High Level Examination

Paper1 Multiple choice: 20%
Paper2 Structured questions: 36%
Paper3 Option questions: 20%
Total: 76%        
Paper 1 (high): 1 hour consists of 40 multiple choice question 15 common to SL + five of core and 20 on the AHL i.e. additional higher level). Calculators are not allowed.
Paper 2 (high): 2 hours 15 minutes consists of two sections:
Section A
one data based question +Short answer questions based on core and AHL. All questions are compulsory. Calculators are allowed.
Section B
twoextended-response questions on the core and the AHL from a choice of 4 questions.Calculators are allowed
Paper 3 (high): 1 hour 15 minutes. Short-answer questions and one extended-response question in each of the two options studied. All questions are compulsory. Calculatorsare allowed.

Standard Level Examination
It is divided into 3 papers:
Paper1 Multiple choice: 20%
Paper2 Structured questions: 36%
Paper3 Option questions: 20%
Total: 76%
Paper 1 (standard): 45 minutes consists of 30 multiple choice questions on core. Calculators are not allowed.
Paper 2 (standard): 1 hours 15 minutes consists of two sections:
Section A
one data based question +Short answer questions based on core. All questions are compulsory. Calculators are allowed
oneextended-response questions on the core from a choice of 3 questions.Calculators are allowed
Paper 3 (high): 1 hour consists of short-answer questions in each of the two options studied. All questions are compulsory. Calculators are allowed.
Study Packages

The study packages for IB Biology Exam are available here. The packages can be customized as per your requirements.

Diagnostic Test. The students are first put through a diagnostic test to assess their strengths and areas where they may need greater emphasis.

Study Topics.The study topics which are covered in the IB Biology exam have been given out below.

Content Outline for IB Biology
   Core Level
Topic 1: Statistical analysis
Topic 2: Cells
2.1 Cell theory
2.2 Prokaryotic cells
2.3 Eukaryotic cells
2.4 Membranes
2.5 Cell division
Topic 3: The chemistry of life
3.1 Chemical elements and water
3.2 Carbohydrates, lipids and proteins
3.3 DNA structure
3.4 DNA replication
3.5 Transcription and translation
3.6 Enzymes
3.7 Cell respiration
3.8 Photosynthesis
Topic 4: Genetics
4.1 Chromosomes, genes, alleles and mutations
4.2 Meiosis
4.3 Theoretical genetics
4.4 Genetic engineering and biotechnology
Topic 5: Ecology and evolution
5.1 Communities and ecosystems
5.2 The greenhouse effect
5.3 Populations
5.4 Evolution
5.5 Classification
Topic 6: Human health and physiology
6.1 Digestion
6.2 The transport system
6.3 Defence against infectious disease
6.4 Gas exchange
6.5 Nerves, hormones and homeostasis
6.6 Reproduction
AHL (Advanced Higher Level)
Topic 7: Nucleic acids and proteins
7.1 DNA structure
7.2 DNA replication
7.3 Transcription
7.4 Translation
7.5 Proteins
7.6 Enzymes
Topic 8: Cell respiration and photosynthesis
8.1 Cell respiration
8.2 Photosynthesis
Topic 9: Plant science
9.1 Plant structure and growth
9.2 Transport in angiospermophytes
9.3 Reproduction in angiospermophytes
Topic 10: Genetics
10.1 Meiosis
10.2 Dihybrid crosses and gene linkage
10.3 Polygenic inheritance
Topic 11: Human health and physiology
11.1 Defence against infectious disease
11.2 Muscles and movement
11.3 The kidney
11.4 Reproduction
   Specific for SL
Option A: Human nutrition and health
A1 Components of the human diet
A2 Energy in human diets
A3 Special issues in human nutrition
Option B: Physiology of exercise
B1 Muscles and movement
B2 Training and the pulmonary system
B3 Training and the cardiovascular system
B4 Exercise and respiration
B5 Fitness and training
B6 Injuries 1
Option C: Cells and energy
C1 Proteins
C2 Enzymes
C3 Cell respiration
C4 Photosynthesis
   Specific for HL
Option H: Further human physiology
H1 Hormonal control
H2 Digestion
H3 Absorption of digested foods
H4 Functions of the liver
H5 The transport system
H6 Gas exchange
   Options SL and HL
Option D: Evolution
Core (SL and HL)
D1 Origin of life on Earth
D2 Species and speciation
D3 Human evolution
Extension (HL only)
D4 The Hardy–Weinberg principle
D5 Phylogeny and systematics
Option E: Neurobiology and behaviour
Core (SL and HL)
E1 Stimulus and response
E2 Perception of stimuli
E3 Innate and learned behaviour
E4 Neurotransmitters and synapses
Extension (HL only)
E5 The human brain
E6 Further studies of behaviour
Option F: Microbes and biotechnology
Core (SL and HL)
F1 Diversity of microbes
F2 Microbes and the environment
F3 Microbes and biotechnology
F4 Microbes and food production
Extension (HL only)
F5 Metabolism of microbes
F6 Microbes and disease
Option G: Ecology and conservation
Core (SL and HL)
G1 Community ecology
G2 Ecosystems and biomes
G3 Impacts of humans on ecosystems
Extension (HL only)
G4 Conservation of biodiversity
G5 Population ecology
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