| A | B |
| cell | basic unit of life |
| bacteria | simplest single cells that carry out all the basic life activities. |
| organelle | a tiny structure inside a cell |
| tissue | groups of cells that are similar and work together |
| organ | a group of different tissues that work together. |
| cell membrane | A thin layer that surrounds and holds a cell together. |
| cytoplasm | A gel-like substance containing chemicals needed by the cell. |
| Nucleus | Information and control center of the cell. |
| DNA | The chemical inside cells that sotores information about the organism. |
| ribosome | A protein builder of the cell. |
| mitochondrion | An organelle that uses oxygen to break down food and release energy in chemical bonds. (Mitochondria is the plural) |
| vacuole | Stores substances such as food, water, and waste products. |
| Endoplasmic reticulum (E.R.) | A system of tubes that process and transports proteins within the cell. |
| golgi body | Packages and distributes proteins outside the cell. |
| cell wall | The outer parat of a plant cell that provides structure (shape & protection) to the cell. |
| chloroplast | Captures the light energy from the sun to make food. |
| lysosome | Breaks dow substances. |
| atom | The basic unit of matter. |
| molecule | The smallest particle of a substance that hall all the properties of the substance. |
| ATP | High-energy nolecules that store energy in a form the cells can easily use. |
| RNA | A molecule that works together with DNA to make proteins. |
| solution | A mixture in which the particles are evenly mixed. |
| carbohydrate | a sugar or starch,which living things use for energy. |
| fat | A chemical that stores large amounts of energy. |
| protein | A chemicla used by living things to build and repair body parts and regulate body activities. |
| amino acid | Molecules that make up proteins. |
| mineral | a chemical found in food that is needed by living things in small amounts. |
| vitamin | A chemicla found in foods that is needed by living things in small amounts. |
| nutrient | Any chemical found in food that is needed by living things. |
| digestion | The process by which living things break down food. |
| respiration | The process by which living things release energy froom food |
| excretion | The process by which living things get rid of wastes. |
| homeostasis | The ability of organisms to maintain their internal conditions. |
| development | The changes that occur as a living thing grows. |
| reproduction | theprocess by which living things produce offspring. |