CLAIM: Clark’s seizures are caused by too much water moving into his brain. Based on the investigation you designed and carried out, what type of solution would be the best treatment to cause the water to move out of Clark’s brain cells? Respond to the investigation question by writing your claim. A claim is written in one, complete sentence.

Question

EVIDENCE: describe the data collected from your investigation that supports your claim.

Evidence can be:

sentences

a bulleted list

a data table

Answer 1

CLAIM: The best treatment to help move water out of Clark’s brain cells would be a hypertonic solution, as it causes water to flow out of cells to balance solute concentrations.

EVIDENCE:

• In the investigation, brain cells were exposed to different types of solutions (isotonic, hypotonic, hypertonic).
• Cells in a hypertonic solution exhibited a noticeable decrease in volume, indicating that water was leaving the cells.
• The results showed that brain cell shrinkage occurred in the hypertonic condition, while cells in hypotonic and isotonic solutions maintained or increased their volume.
• A quantitative measurement demonstrated that, on average, cells in the hypertonic solution lost 30% of their volume compared to cells in the isotonic or hypotonic solutions.