12. Which type of cell came
first in evolution - the
eukaryotic cell or the
prokaryotic cell?

Gap-fill exercise

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This is an problem of
biological . The most accepted
asserts that the simple
cell, the cell, appeared
earlier evolution than the
complex eukaryotic cell.
endosymbiotic hypothesis, for ,
affirms that aerobic cells
appeared from mutualist ecological
interaction aerobic prokaryotes
and anaerobic eukaryotes.