| A | B |
| the reason that most cells are limited to a very small size | surface area-to-volume ratio |
| the smallest and most common form of prokaryotes, containing DNA, robosomes, and flgellum | bacteria |
| small bodies in a cell's cytoplasm that are specialized to perform specific functions | organelle |
| in a eukaryotic cell, an organelle that contains the cell's DNA and that has a role in growth, metabolism, and reproduction | nucleus |
| organelles that make proteins | robosomes |
| an organism made up of cells that have a nucleus enclosed by a membrane as well as membrane-bound organelles | eukaryote |
| a barrier that encloses and protects the cell | cell membrane |
| a web of proteins in the cytoplasm that keeps a cell's membrane from collapsing | cytoskeleton |