Run the investigation
Thu, Apr 15, 2027 · Week 13 · Human Anatomy & Physiology (Human Body Systems)
Today's goal: Conduct the C. elegans heavy-metal investigation and collect data on worm response.
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.
I recorded the number of worms still moving (out of 10) at each time point for every condition, then averaged my three runs. Keeping the same units and time points across all conditions, including the control, lets me compare them fairly.
Unexpected observation note:
In the 50 ppm plate, two worms stopped moving at 15 minutes but were moving again at 30 minutes. I recorded this rather than ignoring it, because recovery could mean the dose was sublethal or the worms were temporarily stunned.
| Copper (ppm) | Moving at 0 min | Moving at 15 min | Moving at 30 min |
|---|---|---|---|
| 0 (control) | 10 | 10 | 10 |
| 10 | 10 | 9 | 9 |
| 50 | 10 | 7 | 6 |
| 100 | 10 | 4 | 2 |
This model shows the level of evidence and organization needed to complete: Completes the data-collection target: a recorded data table covering every treatment concentration and the control, in consistent units, with notes on unexpected observations.
- Name the variables and include units.
- Enter observations without changing the raw values.
- Check labels, calculations, and patterns before interpreting the data.
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 data table on Schoology.
Turn in: Heavy-metal exposure data table
Go to Schoology to turn this in.
Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf.
Open Schoology PDF upload helpIf you cannot get in, see Mr. Mendoza. Do not skip the work.
Claim ceiling: Today's evidence supports a classroom claim about run the investigation. It cannot prove causation, diagnose a real patient, or justify action outside this room.
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: Recognizing why a control condition is documented like every treatment.
- 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.