Scoring a high mark for your IB Biology should be a priority. However, this is almost impossible if you miss the right topic. Our post lists potential ideas for IB biology internal assessment that can easily earn you marks.

Before we list the topics, Ib ia Help provides resources and Ib ia writing help that can enhance the quality of your ia project, making it easy for you to earn your target mark.

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Inspiring ideas for your IB IA Biology

IB Biology IA SL ideas

1. How does varying salicylic acid concentration affect the germination rate of Capsicum annum longum seeds?
2. How does increasing the concentration of ethanol solution affect the permeability property of a cell membrane when using a beetroot?
3. How does the concentration of Melaleuca alternifolia oil tree affect the growth of bacteria?
4. Does variation in temperature and airflow affect the ripening of different species of bananas?

IB Biology HL IA ideas

1. What is the impact of increasing the pH levels of enzyme amylase from 4 to 8 on the rate of enzyme activity?
2. How does increasing the concentration of sucrose solution affect the CO₂ production during yeast fermentation?
3. What is the impact of increasing the concentration of eucalyptus oil from 0% to 100% on the growth of E. coli bacteria?
4. How does increasing the concentration of soy milk affect the rate of hydrolysis of proteins as measured through the change in absorbance levels?

Our list is not exhaustive, so more topics can be created. This is meant to inspire IB students and show them how to develop well-focused IB Biology ia topics that easily earn marks. Get in touch with us for customized topics and IB Biology write-ups.