Solvequill Blog · biology · 3 min read · 1 views
Cell transport: always ask which way particles move
Diffusion, osmosis, and active transport become clearer when direction is the first question.
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Cell transport words are easy to mix up if you start by memorizing definitions. Start with direction instead.
The main idea
Ask whether particles move from high to low concentration, whether water is the moving particle, and whether energy is required.
A short example
Osmosis is water moving across a selectively permeable membrane toward the side with more solute.
Check while you solve
- High to low without energy is diffusion.
- Water movement is osmosis.
- Low to high usually needs active transport.
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