The topics covered include the history of cell studies, the cell theory, characteristics of living organisms and processes carried out by all cells, diversity in cell shape and size, characteristics common to all cells, differences between prokaryotic and eukaryotic cells, the animal cell, and detailed information about each of the following animal cell organelles: cell membrane, nucleus (nuclear membrane, nucleolus, nuclear pores), ribosomes, rough and smooth endoplasmic reticulum, Golgi appara