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Filter exemplars
IB
College
Category
Subject
Type a subject
Type a subject
Grade
7
6
5
4
3
2
1
A
B
C
D
E
Level
HL
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May 2025
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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?
EE
Biology
B
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?
EE
Biology
B
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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?
EE
Biology
B
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)?
EE
Biology
D
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?
EE
Biology
C
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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)?
EE
Biology
B
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)?
EE
Biology
B
How effective is the Cone Repair technique when treating Ebstein’s Anomaly in comparison to other treatments?
EE
Biology
B
To what extent do extracts of Allium sativum (garlic) and Zingiber officinale (ginger) reduce antimicrobial activity and how effective it is compared to antibiotics?
EE
Biology
A
To what extent does inhaling e-cigarettes affect the lungs’ vital capacity of high school students in Jakarta?
EE
Biology
A
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?
EE
Biology
B
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?
EE
Biology
A
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?
EE
Biology
A
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?
EE
Biology
C
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)?
EE
Biology
B
To what extent is blood pressure related to the development of Alzheimer’s Disease in people in age above 50?
EE
Biology
B
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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?
EE
Biology
B
¿Cómo se estudia el angioedema hereditario, su diagnóstico, tratamiento, sÃntomas y etiologÃa en humanos?
EE
Biology
B
To what extent do various concentrations of Piper betle extract (1%, 2%, 3%, 4%, 5%) affect the enzymatic activity of the digestive enzyme Amylase, Protease and Lipase on their substrates (starch, casein and milk) in the the process of digestion and the estimation of Vitamin C concentration in Piper betle?
EE
Biology
B
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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
EE
Biology
A
How can the frameshift mutation caused by a deletion that affects the human body's melanocortin receptor gene (MCR) and leptin receptor gene (LEPR) induce monogenetic obesity?
EE
Biology
B
To what extent does high intensity interval training (HIIT) effect the maximum oxygen uptake (VO2max) in sedentary populations?
EE
Biology
A
Investigating the effects of oil spillages on plants
EE
Biology
B
What effect do differing concentrations of the growth hormone Gibberellic Acid, have on the growth and mortality rates of pulses, common beans (Phaseolus vulgaris L.) and common peas (Pisum sativum L. (partim))
EE
Biology
B
How do different concentrations of two cytokinin hormones: Kinetin (0.5, 1 and 1.5 mg/L) and 6-Benzylaminopurine (1.5, 2 and 2.5 mg / L) affect the growth of Lactuca sativa, measured by height, number of leaves and dry mass, separately and combined over 5 weeks?
EE
Biology
A
To what extent is frequent consumption of ultra processed food related to prevalence of overweight and obesity among high school and college students, in Poland and in Thailand?
EE
Biology
B
How Does The Pollution of Oestrogens into Freshwater Systems Affect the Biological Processes of Fathead Minnows?
EE
Biology
A
To what extent does the abundance of Hormosira banksii influence biodiversity at different positions on the intertidal rocky shore?
EE
Biology
B
To what extent does irrigation with carbonated water affect the ferric ion (Fe3+) nutrient content of Brassica oleracea ‘Black Tuscany’ microgreens?
EE
Biology
A
How does the duration of exposure time to ultraviolet light affect the growth of Saccharomyces cerevisiae?
EE
Biology
B
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¿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? BiologÃa NM
EE
Biology
B
Knowing that fingerprints are always different, but the core is identical, to what extent is it possible to see other similarities between the minutiae of close family members?
EE
Biology
B
To what extent does the efficiency of lactase enzyme found in different types and brands of dietary supplements (VitaPlus Innolact lactase dietary supplement film-coated tablet, Millandjoy lactase enzyme chewable tablets, Lactase Comfort drops, Dr. Chen soft capsule, Sanct Bernhard lactase enzyme capsule) differ if the prescribed dosage used, measured as the amount of glucose produced after being treated with different supplements in a given time period (30sec, 60sec, 90sec, 120sec, 150sec)?
EE
Biology
B
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How do different concentrations of salicylic acid (1mM and 1M) affect growth of Radishes (Raphanus Sativus), under drought, osmotic and cold stress, as well as normal conditions?
EE
Biology
B
The impact of pH on Chlorella vulgaris
EE
Biology
B
BETWEEN HIIT AND STEADY-STATE CARDIO, WHICH IS MORE IMPACTFUL ON PHYSICAL PERFORMANCE?
EE
Biology
B
Factors affecting the frequency of turn alternation in Porcellio scaber (Common rough woodlouse)
EE
Biology
A
How the increase of carbon dioxide concentration (385-405ppm) in sea water affects the functioning of Great Barrier Reef hard corals in years 2017-2019 (Scleractinia)?
EE
Biology
Is it possible for Physarum polycephalum (The Blob) to adapt and learn to cross an obstacle placed in its way to reach a determined goal, this obstacle being normal table salt (NaCl).
EE
Biology
What is the effect of different light combinations on the movement of semiaquatic turtles, red-eared slider (Trachemys scripta elegans) with respect to the position of the light sources?
EE
Biology
A