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Level A1 – BeginnerCEFR A1
2 min
63 words
- Scientists make tiny systems that act like cells.
- A protein network sits inside each small system.
- The network contracts when calcium is released.
- A light-sensitive molecule keeps calcium until light.
- Light patterns make the network change shape.
- Pulsed light lets the network contract again and again.
- The contracting network can push tiny particles forward.
- This ability could help future drug delivery tools.
Difficult words
- protein — Large molecule in cells and bodies.
- network — A group of parts that work together.
- contract — To become smaller or pull in.contracts, contracting
- calcium — A chemical element in bones and cells.
- molecule — A very small particle made of atoms.
- drug delivery — A method to send medicine to the right place.
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you know what a cell is?
- Would you like a small tool to carry medicine?
- Have you seen light change something before?
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