Project question
Fri, May 14, 2027 · Week 17 · 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.
This model shows the level of evidence and organization needed to complete: Completes the independent-project definition: a researchable question, a testable claim, a methods outline with variables and measurement units, a designated control, and one named limitation.
- Identify the purpose, hazards, and required controls.
- Write the procedure in a usable order.
- Confirm materials, measurements, and waste handling before starting.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Submit your project question and methods outline on the class site today.
Claim ceiling: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about Project question. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
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.
It builds this reusable test skill: Writing a testable claim with matching variables and a control.
- Name the concept or data pattern being tested.
- Cross out choices that violate that rule or the evidence.
- Justify the best remaining choice before checking the answer.