It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
As you begin planning your seminar, you'll move from learning more about your chosen topic to figuring out how to convey that to a non-expert audience. (Other biology students have some relevant background knowledge, but they haven't necessarily been immersed in your topic.)
What does your audience need to know to understand this topic?
What are the three most important things about your topic? Why are they the most critical?
What do you want your audience to remember after the seminar?