| A | B |
|---|
| cellular respiration | the enzyme-controlled reactions where energy from food is converted to usable energy |
| ATP (adenosine triphosphate) | a molecule that stores energy obtained from food |
| aerobic respiration | requires oxygen and is done by most organisms to get ATP |
| anaerobic respiration | does not require oxygen to obtain ATP but is not efficient |
| ADP (adenosine diphosphate) | the result of hydrolyzing ATP |
| lenticels | small openings in the stem of plants which allow gas exchange |
| nasal cavity | lined with ciliated mucus membrane which filters, warms, and moistens the air |
| pharynx | where the oral and nasal cavities meet |
| trachea | lone tube (windpipe) lined with ciliated mucous to trap microscopic particles |
| bronchus | one branch of the trachea lined with mucous with a cartilage ring |
| bronchiole | smaller branches lined with mucous but have no cartilage rings |
| alveoli | site of gas exchange between lungs and blood |
| lung | made up of bronchus, bronchioles, and alveoli |
| diaphragm | muscle at the base of the rib cage which facilitates breathing |
| bronchitis | an inflammation of the bronchial tubes caused by infectious agents |
| asthma | bronchial tubes become constricted causing breathing difficulty |
| emphysema | a deterioration of the alveoli caused by pollutants and smoke |
