Choosing the right topic for your Internal Assessment (IA) can be challenging, but it's crucial for success in the IB program because it can make or break your grade (yes, even 20-30% can push you from a 6 to a 7). This list of ideas is designed to be a springboard to inspire your own unique IA topics that cuts to the chase.
Each idea includes a brief description, difficulty rating, and relevant topics/approaches to consider, making it easier for you to select and refine your IA project. Use these suggestions as a starting point and adapt them to fit your interests and the specific requirements of your subject.
The Effect of pH on Enzyme Activity
- Difficulty: Easy
- Topics: Enzymes, pH levels, reaction rates
Photosynthesis Rates under Different Light Intensities
- Difficulty: Moderate
- Topics: Photosynthesis, light intensity, chlorophyll
Antibiotic Resistance in Bacteria
- Difficulty: Hard
- Topics: Microbiology, antibiotics, resistance mechanisms
The Impact of Soil Types on Plant Growth
- Difficulty: Easy
- Topics: Soil composition, plant biology, growth rates
Genetic Variation in Drosophila Populations
- Difficulty: Moderate
- Topics: Genetics, fruit flies, allele frequency
Effect of Temperature on Heart Rate of Daphnia
- Difficulty: Easy
- Topics: Animal physiology, temperature, heart rate
Comparative Study of Vitamin C Content in Fruits
- Difficulty: Moderate
- Topics: Nutrition, vitamin C, titration
Water Quality Assessment Using Bioindicators
- Difficulty: Moderate
- Topics: Ecology, water quality, bioindicators
Impact of Acid Rain on Plant Growth
- Difficulty: Moderate
- Topics: Environmental science, acid rain, plant biology
Investigating Osmosis in Potato Cells
- Difficulty: Easy
- Topics: Cell biology, osmosis, solute concentration
The Role of Light Wavelengths in Algal Growth
- Difficulty: Moderate
- Topics: Photosynthesis, algae, light wavelengths
Effect of Caffeine on Human Reaction Time
- Difficulty: Moderate
- Topics: Human physiology, caffeine, reaction time
Analysis of Genetic Disorders through Pedigree Charts
- Difficulty: Hard
- Topics: Genetics, pedigree analysis, hereditary diseases
Investigating Antibiotic Production in Fungi
- Difficulty: Hard
- Topics: Microbiology, fungi, antibiotics
Biodiversity in Different Ecosystems
- Difficulty: Moderate
- Topics: Ecology, biodiversity, ecosystem comparison
Impact of Fertilizers on Aquatic Ecosystems
- Difficulty: Moderate
- Topics: Environmental science, fertilizers, aquatic ecosystems
Comparative Anatomy of Vertebrate Limbs
- Difficulty: Moderate
- Topics: Anatomy, evolution, vertebrates
Effect of Different Sugars on Yeast Fermentation
- Difficulty: Easy
- Topics: Microbiology, fermentation, sugars
Study of Plant Tropisms in Response to Stimuli
- Difficulty: Moderate
- Topics: Plant biology, tropisms, stimuli
Examining the Spread of Invasive Species
- Difficulty: Hard
- Topics: Ecology, invasive species, population dynamics
Effect of Nutrient Deficiency on Plant Health
- Difficulty: Easy
- Topics: Plant biology, nutrients, health assessment
Investigating Seed Germination Rates under Different Conditions
- Difficulty: Easy
- Topics: Botany, germination, environmental factors
Study of the Carbon Cycle in a Local Ecosystem
- Difficulty: Moderate
- Topics: Ecology, carbon cycle, ecosystem analysis
Analyzing the Effect of Pollution on Marine Life
- Difficulty: Hard
- Topics: Environmental science, pollution, marine biology
Investigating Blood Type Frequencies in a Populations
- Difficulty: Moderate
- Topics: Genetics, blood types, population genetics
