| A | B |
|---|
| tadpole changing to frog | growth & development |
| bacterium dividing | reproduction |
| eating when hungry | response to stimulus |
| same body temperature | homeostasis |
| needed for all activities | energy |
| groups of cells working together | organization |
| one celled organism | unicellular |
| more than one cell | multicellular |
| light and temperature | external stimuli |
| cell | smallest unit of life |
| cladogram | branched diagram |
| dichotomous key | series of questions |
| circulatory system | transport |
| infancy | stage between birth & childhood |
| peripheral & central | parts of nervous system |
| hormone | chemical signal sent to organs |
| reflex | automatic movement |
| neuron | basic unit of nervous system |
| gamete | ova or sperm |
| replication | viruses make copies |
| virus | destroys host cell |
| antibody | protein attaches to pathogen |
| vaccine | mixture of deactivated pathogens |
| pathogen | causes disease |
| drug used to treat viral infection | antiviral medicine |
| pasteurization | killing bacteria in food with heat |
| nitrogen fixation | bacteria make N available to plants |
| decomposition | breaking down of dead organisms |
| antibiotics | meds that stop bacteria from growing |
| bioremediation | organisms clean up pollution |
| protists | some break down dead matter |
| protozoans | "tiny animals" |
| flagellum | whiplike structures for movement |
| diatom | hard outer shell |
| paramecium | cilia & 2 nuclei |
