Biology

5. waste product from anaerobic respiration in animals
6. the uptake of molecular oxygen from the environment and the discharge of carbon dioxide to the environment
9. the release of energy from carbohydrate without using oxygen.
10. an organ that allows for the absorption of oxygen from the air
11. one of the dead-end, multilobed air sacs where gas exchange occurs in a mammalian lung

1. organelles in eukaryotic cells that serves as the site of cellular respiration; uses oxygen to break down organic molecules and release energy
2. organ system responsible for gas exchange
3. the release of a relatively large amount of energy in cells by the breakdown of food substances in the presence of oxygen
4. a series of chemical reactions in cells that release energy for the cell to use
7. Waste product of anaerobic respiration in yeast and bacteria (C2H5O)
8. a sheet of muscle at the bottom of the thorax that helps control the thoracic volume when breathing