| A | B |
|---|
| Virus | a piece of hereditary material that infects and reproduces inside a living cell. |
| Host cell | The cell in which a virus lives and infects. |
| Vaccine | made up of dead or weak cells of a virus and helps prevent a virus. |
| Compound light microscope | lets light pass through an object and then through two or more lenses. |
| Electron microscope | uses magnetic field to to bend beams of electrons. |
| Cell membrane | a structure that forms the outer boundary of the cell and allows only certain materials to move in an out of the cell. |
| Nucleus | a structrue that directs all the activities of the cell. |
| Chromatin | long strands in the nucleus that contains the genetic blueprints for the operations of the cell. |
| Cytoplasm | gel-like material inside the cell membrane and outside the nucleus. |
| Organelles | the structures within the cytoplasm of eukaryotic cells. |
| Endoplasmic Reticulum | folded membrane that moves materials around in the cell. |
| Ribosomes | small structures in the cytoplasm that make their own protein. |
| Golgi bodies | stacks of membrane covered sacs that package and move proteins to the outside of the cell. |
| Mitochodria | organelles where food molecules are broken down and energy is released. |
| Lysosomes | organelles that contain chemicals that digest wastes and worn out cell parts as well as break down food. |
| Cell wall | is a rigid structure outside the cell membrane that supports and protects the plant cell. |
| Chloroplasts | organelles in plant cells in which light energy is changed into chemical energy in the form of sugar. |
| Tissues | groups of similar cells tht do the same sort of work. |
| Organ | a structure made up of different types of tissueds that work together to do a particular job. |
