| A | B |
|---|
| organ system | A group of organs working together to perform a function. |
| tissues | Groupd of similar cells that do the same sort of work. |
| membrane | Openings through which materials enter and leave the nucleus. |
| Archaebacteria | Bacteria that live in very harsh surroundings. |
| Cilia | Short structures extending from the cell membranes that work like oars to propel a protozoan. |
| pasteurization | Process used to kill harmful bacteria. |
| fermentation | Process that releases energy without using oxygen. |
| regeneration | When a body part regrows and may form a new organism. |
| heterozygous | Mendel's term for plantss that receive different alleles for a trait from each parent. |
| water pollution | Which is NOT directly related to respiratory problems. |
| kidney failure | Which is NOT a disorder of the respiratory system. |
| breathing | Process in which air moves into and out of the lungs. |
| moveable joint | Joint that allows range of movement. |
| periosteum | A tight fitting membrane that makes up outer covering of bone. |
