Hi, I'm Jim Shields for About.com, and today I'm going to teach you about how to write an abstract for a biology lab report. An abstract is the section of the biology lab report that summarizes all the other sections. The challenge is to explain all the sections of the report in a single paragraph, as an overview for the reader. So keep it brief, with one or two sentences at most to explain each part of the lab and be sure to use active verbs to show what you planned and did. An abstract should answer these questions: Why did you do this lab and what questions were you trying to answer? What did you do? What did you discover? What did you conclude? Even though the abstract goes at the start of the lab report, after the title page and before the introduction, it is the last part you write, since you are summarizing everything that happened in the course of completing the lab. Thanks for watching. To learn more about biology, visit us on the web at About.com.