| A | B |
| cells | the basic structures of all living organisms |
| metabolism | energy that helps things grow, develop, and repair themselves |
| Homeostasis | Living things keep their internal environment stable |
| reproduction | hereditary information is transfered from one generation to the next |
| cellular respiration | process that occurs in mitochondria to release energy from foods |
| synthesis | Combining simple substances into more complex substances |
| excretion | the removal of wastes |
| Organic Molecules | contain both Carbon and Hydrogen |
| cytoplasm | The jellylike substance inside a cell |
| nucleus | the control center of the cell |
| vacuoles | storage sacs within the cell |
| ribosomes | make proteins for the cell |
| mitochondria | The cell gets its energy from these pod-shaped structures |
| chlorophyll | This substance helps the plant absorb light energy and create food |
| Cell Membrane | the thin structure that surrounds the cell |
| Diffusion | the movement of materials from high concentration to low concentration |
| Active Transport | the movement of materials from low concentration to high concentration |
| hormones | chemical signals that are sent from other cells |
| Respiration | uses oxygen to break down food molecules and release their energy |
| Nervous system | made up of the brain, spinal cord, and nerves |
| Immune system | helps the body to resist disease and stay healthy |