| A | B |
| A cell in which a virus multiplies itself. | host cell |
| gene therapy | Normal hereditary material replaces a cell's defective hereditary material. |
| latent virus | When after entering a cell, a virus does not immediately make new viruses or distroy the cell. |
| vaccine | Made from weakened virus particles that can't cause disease, but help prevent it. |
| Gelatin-like material inside the cell membrane | cytoplasm |
| where proteins are made in a cell | ribosomes |
| cells in many-celled organisms | Depend on other cells in some way-do not work alone. |
| Structures made up of different tissues working together. | organs |
| Structures that release energy from breaking down food. | mitochondria |
| Organelles that package cellular substances for export. | golgi bodies |
| Selectively permeable cell membrane. | Allows only certain substances to pass through it. |
| How items (bacteria) are takeninto cells. | endocytosis |
| Movement of large molecules through cell membrane out of cell. | exocytosis |
| Structure found in a plant cell but NOT an animal cell. | cell wall or chloroplast |
| The movement of molecules requiring energy. | Active transport |
| Example of active transport | Movement of minerals from soil into root cells. |
| Examples of passive transport. | perfume molecules moving randomly through air. |