Cells without cell walls must find a way to pump out the excess water.
Understand the Problem
The question asserts that cells without cell walls must manage excess water. This relates to concepts of cell biology and osmoregulation, where such cells utilize mechanisms to prevent bursting from excess water intake.
Answer
True
The statement is true. Cells without cell walls, such as some unicellular protists, use mechanisms like contractile vacuoles to pump out excess water.
Answer for screen readers
The statement is true. Cells without cell walls, such as some unicellular protists, use mechanisms like contractile vacuoles to pump out excess water.
More Information
Unicellular organisms like protists use contractile vacuoles to expel excess water, preventing them from bursting in hypotonic environments where water tends to enter the cell.
Tips
A common mistake is assuming all cells have cell walls. Cells without them, like animal and some protist cells, need active mechanisms to regulate water balance.
Sources
- Contractile Vacuoles | PMC - pmc.ncbi.nlm.nih.gov
- Osmosis - Biology LibreTexts - bio.libretexts.org
- Tonicity: hypertonic, isotonic & hypotonic solutions - Khan Academy - khanacademy.org
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