| A | B |
|---|
| Nucleus | Control center, contains DNA |
| Nucleolus | Begins assembly of ribosomes |
| Nuclear membrane | Controls flow of material into and out of nucleus |
| Cytoplasm | Holds organelles in place |
| Cell membrane | Regulates flow of material into and out of cell, provides support and protection |
| Cell wall | Provides rigid support and protection for plant cells |
| Mitochondria | Makes energy |
| Chloroplast | Captures energy from sun and turns it into chemical energy in plants |
| Ribosome | Makes proteins |
| Smooth ER | makes lipid parts for the cell membrane, shuttles materials to organelles |
| Rough ER | modifies, transports, and stores proteins, has ribosomes |
| Golgi apparatus | Modifies, sorts, and packages proteins to make hormones and enzymes |
| Lysosomes | Digest waste materials and old organelles |
| Vacuoles | Store materials like water, salt, proteins, and carbohydrates |
| Cytoskeleton | Supports and maintains shape of cell, involved in movement |
| Centrioles | Help in cell division in animals |
| Prokaryote | a cell without a nucleus |
| Eukaryote | a cell with a nucleus |
| Stem cell | a blank cell that can become any cell type |
| Differentiation | the process in which blank cells gain a function |
| Organ system | a group of organs that work together |
| Organelle | a tiny organ within a cell with a special funtion |
| Cell | an enclosed structure, basic unit of life |
| Organ | a group of tissues that work together |
| Tissue | a group of cells with a common function |
