eukaryotes: mostly multicellular cells that contain ribosomes, cell membranes, cytoplasm, DNA, a nucleus, mitochondria, vacuole, Golgi body, endoplasmic reticulum.

prokaryotes: unicellular cells that contain ribosomes, cell walls, cell membranes, cytoplasm, DNA, and chloroplasts.

animal cells: contain lysosomes along with the other eukaryotic organelles.

plant cells: contain chloroplasts, along with the other eukaryotic organelles.

Cell theory: 1) all organisms have cells. 2) cells are the basic unit of life. 3) cells arise from other cells.

Endosymbiotic theory: some of the organelles in eukaryotic cells were once prokaryotic microbes and organelles arose from organisms.

what euk and pro have in common: cell membranes, cytoplasms, DNA, and metabolism.