biology extended essay pdf

IB Extended Essay: Past Essays

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Check these CAREFULLY to be sure your topic fits with IB expectations!

• Language & literature (language A)
• Language acquisition (language B)
• Mathematics
• Visual Arts
• World Studies

Business Management

English a & b ee examples.

• English A EE Example
• English A EE Example 1
• English A EE Example 2
• English A EE Example 3
• English B EE Example
• English B EE Example 1
• English B EE Example 2
• English B EE Example 3
• English B EE Example 4
• English B EE Example 5
• English B EE Example 6

Philosophy EE Examples

• Philosophy Example 1
• Philosophy Example 2
• Philosophy Example 3
• Philosophy Example 4

Economics EE Examples

• Econ Example 1
• Econ Example 2
• Econ Example 3
• Econ Example 4
• Econ Example 5
• Econ Example 6
• Econ Example 7
• Econ Example 8

Review Past Papers

• From the IB:  papers from other students and how they scored
• Renaissance Library Past Essays :  Links to all subject area examples

Music EE Examples

• Music EE Example 1
• Music EE Example 2
• Music EE Example 3
• Music EE Example 4

Psychology EE Examples

• Psych EE Example 1
• Psych EE Example 2
• Psych EE Example 3

Chinese EE Examples

• Chinese EE Example 1
• Chinese EE Example 2
• Chinese EE Example 3
• Chinese A EE Cat 1
• Chinese A EE Cat 2
• Chinese A EE Cat 3
• Chinese B EE Example 1
• Chinese B EE Example 2
• Chinese B Example 3
• Business EE Example 1
• Business EE Example 2
• Business EE Example 3

Visual Arts EE Examples

• Visual Arts EE Example 1
• Visual Arts EE Example 2
• Visual Arts EE Example 3
• Visual Arts EE Example 4

Film EE Examples

• Film Example 1
• Film Example 2

Chemistry EE Examples

• Chemistry EE Example

Biology EE Examples

• Biology EE Example
• Biology EE Example 1
• Biology EE Example 2
• Biology EE Example 3

Physics EE Examples

• Physics EE Example
• Physics EE Example 1
• Physics EE Example 2
• Physics EE Example 3
• Physics EE Example 4
• Physics EE Example 5

Math EE Examples

• Math EE Example 1
• Math EE Example 2
• Math EE Example 3
• Math EE Example 4
• Math EE Example 5
• Math EE Example 6

World Studies EE Examples

• World Studies Example 1
• World Studies Example 2
• World Studies Example 3
• World Studies Example 4
• World Studies Example 5
• World Studies Example 6
• World Studies Example 7
• World Studies Example 8
• World Studies Example 9
• World Studies Example 10
• World Studies Example 11
• World Studies Example 12
• World Studies Example 13
• World Studies Example 14
• World Studies Example 15
• World Studies Example 16
• World Studies Example 17
• World Studies Example 18
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• Last Updated: Apr 9, 2024 9:39 AM
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IB Biology EE examples

Filter exemplars, to what extent do cosmetic procedures like bleaching and heat straightening affect the tensile strength of homo sapiens hair, to investigate the effect of increasing concentration (volume/volume ratio) of malathion (0.1%,0.2%,0.3%,0.4%,0.5%) an insecticide, on the total chlorophyll content measured through a spectrophotometer at 630,691,664 and 647nm, total carotenoid content, measured at 470nm, and percentage inhibition on electron transport, measured by the rate of decolorization of dcpip at 600nm, of elodea canadensis., want to get full marks for your ee allow us to review it for you 🎯, to what extent do different honey brands affect their antibacterial activity to test their hydrogen peroxide content using permanganometric titration, to what extent does inhaling e-cigarettes affect the lungs’ vital capacity of high school students in jakarta, to what extent does the presence of acetaminophen (tylenol), polymixin b (polysporin), and diphenhydramine hydrochloride (benadryl) in the growth medium of cotoneaster acutifolius affect the average change in leaf length over a period of 15 days in five different concentrations, fast track your coursework with mark schemes moderated by ib examiners. upgrade now 🚀, to what extent do phytochemicals such as resveratrol, glyceollin and epigallocatechin-3-gallate (egcg) possess comparable antibacterial effects against staphylococcus aureus bacteria to a non-prescription otitis externa (oe) treatments such as ciprofloxacin using bacillus subtilis as a prokaryotic model organism, to what extent do extracts of allium sativum (garlic) and zingiber officinale (ginger) reduce antimicrobial activity and how effective it is compared to antibiotics, to what extent is blood pressure related to the development of alzheimer’s disease in people in age above 50, to what extent do different concentrations of magnesium nitrate (10, 20, 30, 40, 50 mm) affect the concentration of chlorophyll a and b in ocimum basilicum at 645 nm and 662 nm wavelength using spectrophotometer, how do different concentrations of punica granatum extracts: peel, flower and leaves (10, 20, 30, 40 and 50 mg/ml) affect the rate of reaction of α-amylase and compare with metformin (anti-diabetic drug) as measured by a spectrophotometer at 587nm, to what extent do different species of chili pepper consumption biologically affect the rate of lipid digestion in terms of ph change within 30 minutes, how effective is the cone repair technique when treating ebstein’s anomaly in comparison to other treatments, what is the effect of salinity stress (0, 50, 100, 150, 200 mm nacl) measured through microscopic (stomatal aperture) and morphological (leaf area, leaf dry mass, and root length) characteristics on pre-treated radish (raphanus sativus) seeds with magnetopriming (48 hours), to what extent does varying the duration (0 mins, 5 mins, 10 mins, 15 mins, 20 mins, 25 mins) at which a 25% solution consisting of ethanol-dissolved ayurvedic spices (curcumin and black cumin) is maintained at 60°c affect the antimicrobial activity of these spices against a k12 strain of escherichia coli, to what extent does irrigation with carbonated water affect the ferric ion (fe3+) nutrient content of brassica oleracea ‘black tuscany’ microgreens, to what extent does high intensity interval training (hiit) effect the maximum oxygen uptake (vo2max) in sedentary populations, what is the effect of seawater mixture (0%, 5%, 10%) on the germination of black chickpeas (cicer arietinum), green gram (vigna radiata) and fenugreek (trigonella foenum-graecum) for 5 days and their subsequent growth when watered using tap water for 10 days where growth was measured by plant height (±0.05 cm) and dry mass (±0.001 g), to what extent do the antibacterial properties of metals copper, barium and silver aid in the inhibition of the growth of bacteria staphylocollucus albus, to what extent do periodontal diseases affect the probability of having cardiovascular diseases, to what extent does the amount of gentamicin given to bacillus subtilis inhibit their growth, to what extent does garlic (allium sativum l.) affect the elasticity of collagen and can it be used to reduce the degeneration of collagen in skin, what is the effect of varying salt concentrations (0%, 0.6%, 1.2%, 1.8%, 2.4%, 3.0% nacl(aq)) on the survival rate of hydroponically grown water spinach (ipomoea aquatica), to what extent do artemisinin-based combination therapies (acts), artemether-lumefantrine (al), artesunate-amodiaquine (as-aq), artesunate-sulfadoxine-pyrimethamine (as-sp), dihydroartemisinin-piperaquine (dha-pq), and artesunate-pyronaridine (as-py) effectively treat uncomplicated plasmodium falciparum (malaria) in patients under 16 years with hiv and in burkina faso, nigeria, kenya, tanzania, uganda, zambia, ghana and madagascar, what is required to bring the velociraptor mongoliensis back from extinction, and is it possible to ethically do so within the century, how do increasing concentrations of baobab and honey effect the restriction of growth of e.coli k-12, how does the concentration (g/l) of the “malibu spf30 kids lotion protection” chemical sunscreen (0.0, 1.0, 2.5, 5.0, 10) affect the rate of photosynthesis (ppm/s) of freshwater green algae (chlorella sp.) in terms of the decrease in co2 concentration over time, measured using a wireless co2 sensor for 5400s at 20ºc, how does the hla-drb1 gene (hla-dr3 and dr4 alleles) affect the risk of type 1 diabetes in the united states, as measured by the prevalence rate of type 1 diabetes hence, how does that affect the severity of covid-19, as measured by the mortality rate of covid-19, do energy drinks have an erosive potential that has an adverse impact on tooth enamel, affecting tooth structure and progressively deteriorating the oral health of consumers, to what extent does the neurobiology of clinical depression and its associated treatments- (antidepressants) influence sleep patterns, to what extent does sucrose concentration (0.0%, 2.5%, 5.0%, 7.5%, 10.0% measured in g/cm3) affect the inheritance of body pigmentation related genes in drosophila melanogaster measured as percentages, specifically of the ebony (black colour) gene and of the tan (yellow colour) gene, how do the two genders female and male differ in maximum muscular strength in form of grip strength and maximum jump within the age groups 9-60 years old, to what extent does performing the dance styles, cha cha, viennese waltz, and modern contemporary affect human fitness levels as measured by oxygen consumption (vo2) and maximum heart rate (bpm), to what extent do bioinformatic tools such as cb dock 2 and chimera help in the analysis of phytochemicals (calotropone, quercetin, thymoquinone) compared to allopathic drugs (gemcitabine, olaparib, fluorouracil) against target receptors of pancreatic cancer (human glutamate oxaloacetate transaminase 1 (got1), threonine-protein kinase bub1, and peroxisome proliferator-activated receptor gamma), how does juice from garlic allium sativum cloves prepared in different ways (fresh raw, crushed one day prior, cooked, kept in oil, fermented in brine and fermented (black garlic)) affect the growth of a non-pathogenic strain of escherichia coli, how is the number of errors made by participants when attempting to distinguish between the temperature of two different water baths influenced by the hours slept within a 24-hour period, to what extent does the abundance of hormosira banksii influence biodiversity at different positions on the intertidal rocky shore, ¿cómo los cambios en la luminosidad con niveles de 0, 2 500 y 5 000 lux, en focos de 25 y 50 watts respectivamente, afectan a la fijación de dióxido de carbono (co2) en la sansevieria trifasciata zeylanica biología nm, estudio sobre el efecto de la crema dental utilizada para el cepillado de los dientes como inhibidor en la actividad enzimática de la alfa amilasa salival, how does the duration of exposure time to ultraviolet light affect the growth of saccharomyces cerevisiae.

2016-2025 IB Extended Essay: Sample IB EE's

• Workshop 1: Getting started
• Workshop 2: EE Options
• Workshop 3: Selecting a topic
• Workshop 4:Research Questions
• Workshop 5: Supervisors and Reflections
• Finding Books & Ebooks
• Primary Sources
• Citation Guide
• Subject guidance
• Sample IB EE's
• Biology (2018 new rubric)
• Biology Light Intensity
• Does Age Have an Effect on Short-term Memory of 6 to 18 Year Old Students?

Chemistry: 

• Chemistry 1
• What are the Alternative Fuels for the Depleting Fossil Fuels and which is the Best Fuel in Accordance with the Energy Output?
• A Copper Ions
• Chemistry 3

Design Technology

• Does Hull Trim and Balance Affect the Speed of a Boat?

Individuals & Society:

• Market Form of the Retail Petroleum Supply Industry in Parklands
• Economics 1
• Economics 2
• Economics 3

I have an exemplar but the file is too big to upload.  If you are interested in this topic I can share the essay with you.

• Geography 2
• History EE (2018 new rubric)
• To What Extent was the Establishment of the State of Israel in Palestine in 1948, Influenced by Theodor Herzl?

Information Technology in a Global Society

• Philosophy 1
• Philosophy 2
• Philosophy 3
• Philosophy 4
• Psychology EE (2018 new rubric)
• Applied Behavior Analysis and Early Intervention: The Extent of Recovery from Autism
• Psychology 1
• Psychology 2
• Psychology 3

Social & Cultural Anthropology

• Social & Cultural Anthropology 1
• Social & Cultural Anthropology 2

World Religions

• To What Extent do the Core Scriptural Teachings of Sikhism Permit them to Marry Outside of the Religion?
• World Religions 1
• World Religions 2

Language Acquisition:

• French: Les Liaisons Dangereuses

Literature & Language 

•   Journeys in the Inferno and The Wonderful Wizard of Oz   
•   Toni Morrison 

Math: 

•   Cryptography and Rubik's Cube: An Investigative Analysis   
•   Pascal's Triangle 

Visual Arts: 

•   How Does the work of Yinka Shonibare Illustrate the Changing Role of African Art in a Global Society? 
• Ballet's Accessibility and Costumes Affecting Society's View of the Art Form
• Visual Arts 1
• Visual Arts 4

Interdisciplinary Essays:

Environmental Systems & Societies

• ESS Extended Essay (2018 new rubric)

World Studies

• World Studies EE History, Economics, & Politics  (2018 new rubric)
• Does the Production of Dairy and Meat from Dairy Cows in the United States affect the Environment and Well Being of Animals and Humans?
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Extended Essay (First Exams 2018): Examples of Extended Essays

• EE Intro to Inquiry
• Examples of Extended Essays
• Recommended Research Tools
• How-to: Research Help
• EE Module Videos

Samples from the IBO

The IBO publishes two volumes of  50 Excellent Extended Essays , covering all Diploma Programme groups -- and all scored a top A grade.

Click on the link below to access PDFs of the essays. 

50 Excellent Extended Essays

All 50 essays are also available in electronic form in the QD Library on the iPads.  Look for the display at the circulation desk. The essays are found in the iBooks app. The iPads are available for check out at the circulation for periods of 30 minutes at one time.

Recently, the IBO has produced another list of exemplars with marks. Click on the link below to access this:

• Assessed Student Work  
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• Last Updated: Sep 13, 2024 12:48 PM
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