What are Biology examples?

Biology examples are high-quality student coursework samples from Biology that have been verified and scored by IB examiners. These examples include different types of coursework such as Internal Assessments (IA) and Extended Essays (EE) and other assessed work.

How are these examples verified?

All examples in our collection have been verified with scores by qualified IB examiners, ensuring they represent authentic, high-quality student work that meets IB assessment standards.

What types of Biology coursework are included?

Our Biology example collection includes various types of coursework such as Internal Assessments (IA) and Extended Essays (EE) and other assessed components specific to Biology.

Biology Examples

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About Biology Coursework Examples

The Coursework Examples section gives IB students (both SL and HL) access to real, high-quality samples of IB Biology Internal Assessments (IA) and Extended Essays (EE). Each example is carefully selected to model top-scoring work, aligned with IB assessment rubrics and showcasing what examiners expect at different achievement levels.

On this page, you'll find full-length examples annotated with examiner commentary, highlighting strengths, weaknesses, and specific rubric-based insights. These samples demonstrate how ideas are structured, arguments developed, and criteria met to achieve high marks.

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About Biology Coursework Examples

HOW DO DIFFERENT CONCENTRATION OF MICROPLASTIC (20 mg/L, 40 mg/L, 60 mg/L, 80 mg/L, 100 mg/L) IN WATER AFFECT GROWTH RATE OF Hydrilla ver cillata BY MEASURING THE CHANGES IN LENGTH AND TOTAL CHLOROPHYLL CONTENT AFTER 7 DAYS

What effect do different concentrations of ethanol solution (15%, 30%, 45%, 60% and 75%) have on the cell membrane permeability of beetroot (Beta vulgaris L.), measured by the absorption of light (at wavelengths 470 nm and 626 nm)?

The research question that this experiment aims to answer is: How does the river current velocity ms-1 (0.9877, 0.5157, 0.2147) affect the frequency of Mayfly Nymphs (order Ephemeroptera) in a Freshwater stream in the Nettlecombe River?

To what extent does a high ultra-processed food diet affect the cognitive development of the foetus in Homo sapiens as measured using early-year cognitive tests?

To what extent do mutations of HCN4 within the hyperpolarized-activated cyclic nucleotide-gated channel (HCN) family influence the development of familial sick sinus syndrome (SSS)?

La durabilité économique et environnementale de la pêche du thon rouge dans les écosystèmes marins méditerranéens

How does varying salinity a1ect the hatching rate, growth, and swimming speed of Artemia over a three-day period?

To what extent does light pollution affect the behaviour of aquatic animals' behaviour in the Chicago city region?

How do molasses, honey, and milk at different concentrations (10%, 20%, 30%, 40%, 50%) affect the anaerobic respiration in Saccharomyces cerevisiae (yeast)?

What is the substrate type's (Glucose, Fructose, Galactose, Sucrose, Maltose, Starch) effect on the rate (ppm/min) of respiration in yeast (Saccharomyces cerevisiae), as measured by the change in CO2 concentration (ppm) over 600 seconds?

How does the diversity of aquatic invertebrates differ between a boating area and a natural area (an environment that has not been altered by human activities) of Danson Lake, Welling DA6 8HL, in June 2024?

The effect of milk fat percentage and tea temperature on the formation of a film layer on tea

Study of the effect of running session times (6:00, 10:00 , 12:00 , 16:00, 20:00) on heart rate response in a male participant aged 18 during 5 minute exercise intervals

Investigating the effects of different wavelengths (nm) on Vigna Radiata stem elongation.

How do varying ethanol concentrations (15%, 30%, 45%, 60%, 75%) affect the membrane permeability of Beta vulgaris cells, as quantified by betacyanin release measured via absorbance at 540 nm using a colorimeter after 10-minute exposure?

How do different pH levels affect the growth of mung beans (Vigna radiata) over 8 days measured by the root and stem length?

The Effect of Vitamin E on the Germination and Growth of Brassica Juncea Seeds

How do various concentrations of acid rain (0mL, 10mL, 20mL) affect the germination rate of radish plants?

How do different concentrations of ethanol affect the permeability of the cell membrane in beetroot (Beta vulgaris) as measured by absorbance?

What is the effect of varying concentrations of caffeine (0%, 2%, 4%, 6%, 8%, 10%) on amylase inhibition by measuring rate of hydrolysis of starch via a colorimeter over a 7-minute period?

Investigating the effects of Iron (II) sulphate and copper (II) sulphate solution concentration on the decomposition of hydrogen peroxide into water and oxygen from catalase found in Ovis aries liver solution.

How does increasing the concentration of ethanol (0%, 5%, 10%, 15%, 20%, 25%) affect the rate of hydrolysis of starch by alpha-amylase measured as the change in absorbance units per minute (AU/min) over a 5 minute incubation period?

How do different concentrations ( 0%, 2%, 4%, 6% and 8%) of starch alter the activity of amylase in the hydrolysis of starch measured through visual color changes and changes in light transmission(%)?

More Biology examples

Biology SL IA Examples

Biology HL IA Examples

Biology IA Level 7 Examples

Biology EE Examples

Biology EE Grade A Examples

Biology guide articles

1. Essentials of the Internal Assessment

1.1 Essentials of the EE

2.1 Criterion A

2.1 Research design

2.2 Criterion B

2.2 Data analysis

2.3 Conclusion

2.3 Criterion C

2.4 Criterion D

2.4 Evaluation

2.5 Criterion E

3. Examiners' insights

3.1 Examiners insights

4. Suggested timeline

4.1 EE checklist

5. Marking toolkit

5.1 Marking toolkit

6.1 Command term glossary

6.1 EE suggested timeline

6.2 IA checklist

7. Student planning sheets

7.1 Student planning sheets