Essays in biology? Right I wasnt the only surprised one when I first heard about it. The main concept is that these essay titles are diverse and can range from a whole multitude of topics. But why is my essay going to get full marks? Start off nice and simple, get topics which link to each other from first year and second year together. Group them, eg nerves and transmission with reflexes, adaptations can link to genetic diversity. Ensure that you have made all these links so no matter what question is asked you know what you can link these topics with. After that, read. Articles, Journals, further reading strengthens and developes responses which will help you get those top marks. For further detail and for more help in this aspect, feel free to message me.