| A | B |
| conserve | To protect from harm or loss |
| chemical energy | A form of potential energy possessed by food and fuels |
| enzyme | A substance that speeds up a chemical reaction |
| glucose | A type of sugar the body uses for energy |
| particle | A small localized object with volume or mass |
| xylem | Vascular plant tissue that transports water and dissolved minerals away from the roots throughout the plant |
| potential energy | Energy stored in an object depending on the position of the object |
| fermentation | A break down of sugar into an acid or alcohol |
| chloroplast | Organelle that uses light energy to make carbohydrates from carbon dioxide and water |
| light energy | Energy coming from light, especially the sun |
| stomata | Special pores mainly found on the lower epidermis of the leaves of plants that allow passage of materials |
| phloem | Vascular plant tissue that carries organic nutrients |
| circulatory system | This system of the body connects the muscles and organs through an extensive system of blood vessels |
| cellular respiration | Process by which living organisms harvest the energy in food molecules |
| kinetic energy | Energy of motion |
| digestive system | This system of the body extracts and absorbs nutrients from food, to remove wastes and to maintain water and chemical balance |
| mitochondria | These are the cell's power producers. They convert energy into forms that are usable by the cell |
| ATP | Organic molecule composed of a base, a sugar and 3 phosphate groups that act as the main energy currency for cells |
| chlorophyll | Pigment responsible for trapping light energy in photosynthesis |
| form of energy | Type of energy that measures the ability of an object or system to do work on another object or system |
| energy | Capacity for doing work; ability to move or change matter |
| photosynthesis | Process by which organisms use light energy to produce organic compounds |
| thermal energy | Kinetic energy of the movement of atoms and molecules |