| A | B |
|---|
| Cell membrane | a barrier that encloses and protects the cell |
| Cell wall | a rigid structure that gives support to a cell |
| Chloroplasts | organelles in which photosynthesis takes place |
| Cytoskeleton | a web of protein in the cytoplasm that keeps a cell’s membrane from collapsing |
| Endoplasmic reticulum | a system of folded membranes that functions as the internal delivery system of a cell |
| Golgi complex | the organelle that packages and distributes proteins |
| Lysosomes | organelles that contain digestive enzymes |
| Mitochondrion | an organelle that functions as the main power source of a cell |
| Nucleus | a large organelle that produces and stores the cell’s DNA |
| Ribosomes | organelles that make proteins |
