New model predicts cells that 'eat' other cells
Scientists have designed a new model to identify which single-celled organisms are capable of consuming other cells through a process called phagocytosis. They believe Earth's earliest life forms were made up of single-celled organisms called prokaryotes, which evolved into complex lifeforms by phagocytosis 2-3 billion years ago. However, no modern prokaryotes were found performing phagocytosis.