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cell theory

all living things are composed of cells; cells are the basis unit of living organisms; cells come from existing cells

Robert Hooke

studied plant cells; named them "cells"

Leeuwenhoek

studied animal cells; first to observe living cells

cell

the smallest unit of matter that can carry on life processes

organelles

internal cell structures that perform a specific function

eukaryotes

"true" cells having a nucleus and membrane bound organelles

prokaryotes

primitive cells lacking a membrane bound nucleus and organelles

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