A Eukaryotic cell engulfing a bacterial cell.
You may want to know that the bacteria which used to photosynthesise , after they have been engulfed by an eukaryotic cell , they evolved into Chloroplasts .
However for the bacteria which used to respire , they have evolved into mitochondria.
Hope this helps :) Good Luck !
4 significant figures I think
The general theory is that mitochondria and chloroplasts began initially as separate cells that were "eaten" by larger cells, but not digested and simply passed on due to their advantages.<span />
I think C I did some research that one made more sense then all of them I’m not sure tell me if I’m wrong
