Introduction to Cell Biology Introduction, Cell Theory, Scientific Method, History. Cells arise from pre-existing cells, so that all living things are composed of cells. Question 4 Cells that do not have a nucleus are prokaryotes.
Eukaryotic cells are larger than prokaryotic cells.
Eukaryotic cells have cell components called organelles. Eukaryotic cells have their DNA packaged in a nucleus. All of the above are correct about eukaryotic cells. Question 7 Metazoan organisms include the bacteria. When a study or experiment is done to collect data, for example to study cellular physiology, some cells cells might receive a treatment or drug.