cells

Text 475 words : hommage to the onion skin : https://www.microscopy-uk.org.uk/mag/artnov03/wdonion.html

Questions about cells : https://www.evolvingsciences.com/Cells yr 10 .html

Cells And Cell Theory Quiz : https://www.proprofs.com/quiz-school/story.php?title=cells-and-cell-theory-quiz