Questions and Answers
What is the primary function of osmosis?
To selectively move water across a semi-permeable membrane
What type of solution has the same solute and pH concentration as the surrounding body fluid?
Isotonic
What happens to a cell when it is placed in a hypotonic solution?
The cell ruptures due to excess water intake
What is the characteristic of a hypertonic solution?
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What is the effect of a hypertonic solution on a cell?
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Study Notes
Osmosis
- Osmosis is the movement of water across a semi-permeable membrane, selectively allowing only certain molecules to pass through.
- Water is usually the only free-flowing molecule across this membrane.
Types of Solutions
- Isotonic Solutions: have the same solute and pH concentration as the surrounding body fluid or cytoplasm.
- Hypotonic Solutions: contain a lesser amount of solute concentration compared to the surrounding fluid, causing cells to rupture due to excess water input.
- Hypertonic Solutions: contain a higher concentration of solute compared to the surrounding fluid, pushing water out of cells and causing them to shrink.
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