Applied biological sciences personal statement example

Why do you want to study this course or subject?

I keep a sourdough starter in a jam jar on the windowsill, and it has taught me more about applied biology than I expected. Feeding it at different temperatures, or swapping rye for wholemeal, changes how quickly it rises and how sour the bread tastes, because I am altering the balance between yeasts and lactic acid bacteria without ever seeing them. What began as a lockdown hobby turned into something I wanted to understand properly: why the microbial community is stable enough to survive my neglect, and why a controlled culture behaves so differently from the same organisms in a factory fermenter. Applied biological sciences appeals to me because it treats living systems as things to be understood and then used, whether that means enzymes in detergents, bacteria producing insulin, or crops bred for disease resistance. I am drawn to the point where biological knowledge meets a practical constraint, such as cost, yield, safety or scale-up, since that is where I think the interesting compromises are made. I would like a degree that keeps chemistry and quantitative work alongside biology rather than dropping them, because the problems I find most absorbing, like predicting how a population of cells will respond to a change in conditions, need all three. In the longer term I am interested in industrial biotechnology or food and agricultural science, although I would rather choose after I have spent time in a laboratory and found out which techniques suit me. What I am certain about is that I want to work on biology that is meant to be applied, and to be properly trained in the methods that make those applications trustworthy.

How have your qualifications and studies helped you to prepare?

My A-levels in Biology, Chemistry and Mathematics have given me complementary ways of thinking about the same material. In Biology I enjoyed the modules on gene expression and on respiration most, partly because they explained things I had already met casually: reading about anaerobic pathways made sense of why my starter smells of vinegar when I forget it, and why yeast behaves differently when oxygen is limited. Chemistry has been the subject that most changed how I read biology. Learning about equilibria, rates and buffers meant that enzyme graphs stopped being shapes to memorise and became consequences of collisions and pH, and titration practicals taught me to be honest about uncertainty rather than quietly rounding a result towards what I expected. Mathematics has been harder work but more useful than I anticipated; exponential and logarithmic functions, and the statistics unit on sampling and significance, gave me the tools to read graphs in articles critically instead of trusting the line of best fit. For my Extended Project Qualification I investigated whether commercial mycelium-based packaging is a realistic replacement for expanded polystyrene, which forced me to compare laboratory claims with manufacturing and transport realities and to accept that some of the sources I found were promotional rather than evidential. Alongside coursework I read Entangled Life by Merlin Sheldrake, which gave me a broader sense of fungal ecology and how little is settled, and The Epigenetics Revolution by Nessa Carey, which helped me see gene regulation as a layered system rather than a switchboard. I follow science coverage in New Scientist and try, when I can, to find the original paper behind a headline, which has been a useful lesson in how much is lost in summary.

What else have you done to prepare outside of education, and why are these experiences useful?

For two years I have worked Saturdays and school holidays at a garden centre, mainly on the plants and outdoor section. It is ordinary work, watering, tidying stock and serving customers, but I have learned to explain technical things simply, such as why a plant with root rot cannot be rescued by more water, or what a soil pH kit actually measures. I also notice which advice customers trust and which they ignore, which I think will matter if I ever work on products that people have to accept. I help my grandfather with his allotment most weekends. He has grown vegetables there for decades and works largely by experience, so we have had some good disagreements: he rotates his brassicas out of habit, and looking up club root taught me the biological reason behind the rule. Last spring we tested two composting methods on adjacent beds and compared the onion crop; the results were messy, the beds were not identical and we only had one season, which was a blunt lesson in why controls and replicates exist. I have started keeping a notebook of sowing dates, weather and yields so that we have something better than memory to argue with. At college I volunteer with a homework club for Year 8 students, usually helping with maths and science, and I have found that being asked to explain moles or food chains three different ways sharpens my own understanding. I am also part of a small climbing club, which has taught me to be patient with slow progress and to plan a route rather than rush at it. Between shifts, coursework and the allotment I have had to become organised about my time, and I am used to work that continues whether or not it is convenient, which I expect to be good preparation for laboratory practicals and longer projects.

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