Biology – IB

A. Syllabus Content – Topics you will learn

Core (SL)

Topic 1: Cell biology

1.1 Introduction to cells

1.2 Ultrastructure of cells

1.3 Membrane structure

1.4 Membrane transport

1.5 The origin of cells

1.6 Cell division

 

Topic 2: Molecular biology

2.1 Molecules to metabolism

2.2 Water

2.3 Carbohydrates and lipids

2.4 Proteins

2.5 Enzymes

2.6 Structure of DNA and RNA

2.7 DNA replication, transcription and translation

2.8 Cell respiration

2.9 Photosynthesis

 

Topic 3: Genetics

3.1 Genes

3.2 Chromosomes

3.3 Meiosis

3.4 Inheritance

3.5 Genetic modification and biotechnology

 

Topic 4: Ecology

4.1 Species, communities and ecosystems

4.2 Energy flow

4.3 Carbon cycling

4.4 Climate change

 

Topic 5: Evolution and biodiversity

5.1 Evidence for evolution

5.2 Natural selection

5.3 Classification of biodiversity

5.4 Cladistics

 

Topic 6: Human physiology

6.1 Digestion and absorption

6.2 The blood system

6.3 Defence against infectious disease

6.4 Gas exchange

6.5 Neurons and synapses

6.6 Hormones, homeostasis and reproduction

 

Additional higher level (AHL)

Topic 7: Nucleic acids

7.1 DNA structure and replication

7.2 Transcription and gene expression

7.3 Translation

 

Topic 8: Metabolism, cell respiration and photosynthesis

8.1 Metabolism

8.2 Cell respiration

8.3 Photosynthesis

 

Topic 9: Plant biology

9.1 Transport in the xylem of plants

9.2 Transport in the phloem of plants

9.3 Growth in plants

9.4 Reproduction in plants

 

Topic 10: Genetics and evolution

10.1 Meiosis

10.2 Inheritance

10.3 Gene pools and speciation

 

Topic 11: Animal physiology

11.1 Antibody production and vaccination

11.2 Movement

11.3 The kidney and osmoregulation

11.4 Sexual reproduction

 

Options for SL/ HL

A: Neurobiology and behaviour

Core topics

A.1 Neural development

A.2 The human brain

A.3 Perception of stimuli

 

Additional higher level topics

A.4 Innate and learned behaviour

A.5 Neuropharmacology

A.6 Ethology

 

B: Biotechnology and bioinformatics

Core topics

B.1 Microbiology: organisms in industry

B.2 Biotechnology in agriculture

B.3 Environmental protection

 

Additional higher level topics

B.4 Medicine

B.5 Bioinformatics

 

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

 

Additional higher level topics

C.5 Population ecology

C.6 Nitrogen and phosphorus cycles

 

D: Human physiology

Core topics

D.1 Human nutrition

D.2 Digestion

D.3 Functions of the liver

D.4 The heart

 

Additional higher level topics

D.5 Hormones and metabolism

D.6 Transport of respiratory gases

 

B. Assessment 

External assessment details—SL

Assessment Biology SL

External assessment details—HL­

Assessment Biology HL