Ace the 2026 Westcott Microbiology Lab Exam – Dive into Discovery and Dominate!

In this type of question, you determine the amount by visually inspecting how many droplets are shown in the well. The image for well 1A shows a single droplet, with no additional droplets indicated. So the amount added is one drop. If there were two, three, or four droplets, those would be evident as multiple marks or droplets in that well, which isn’t the case here. In practice, drops are a convenient way to transfer small, approximate volumes in dilution steps, and the count is what the protocol expects you to report based on the diagram.