Project question
Thu, May 6, 2027 · Week 16 · Biotechnology for Health (Biomedical Innovations)
Today's goal: Define a testable claim and methods for your independent capstone project.
What a finished product looks like
This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.
Question: Does the amount of hand-sanitizer contact time affect how much bacterial growth appears on a surface swab?
Testable claim: I expect that longer sanitizer contact time will lead to fewer bacterial colonies on the swab plate.
Methods outline:
- Independent variable: sanitizer contact time (0, 15, 30, and 60 seconds).
- Dependent variable: number of bacterial colonies, counted after 48 hours of incubation.
- Control: a surface swabbed with no sanitizer (0 seconds).
- Measurement: colonies counted as whole numbers; time measured in seconds with a stopwatch.
- I will run three plates per time to average out variation.
One limitation: My colony counts only sample one surface type, so the results may not apply to all materials or to viruses, which this method does not detect.
Also due today: Submit your project question and methods outline in the course LMS today.
WebXam problem for today's skill
One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.
Tap an answer to see the full explanation. Nothing is recorded or graded.