Across
- 6. Regulation and maintenance of constant internal conditions in an organism.
- 8. Protein markers on the surfaces of cells and viruses that help the immune system identify a foreign cell or virus.
- 11. Process of producing ATP by breaking down carbon-based molecules when oxygen is present.
- 12. Attraction between molecules of the same substance.
- 13. Uncontrolled cell division.
- 15. Process by which light energy is converted to chemical energy.
Down
- 1. Thin muscle below the rib cage that controls the flow of air into and out of the lungs.
- 2. Tissue that transports sugars in vascular plants.
- 3. Nonpolar molecule composed of hydrogen, carbon, and oxygen; includes fats and oils.
- 4. The regular growth, DNA replication, and cell division that occurs in eukaryotic cells.
- 5. A tube that connects the mouth to the stomach.
- 7. Molecule that makes up proteins.
- 9. Release of vapor through the pores of the skin or the stomata of plant tissue.
- 10. Disease-causing agents.
- 14. A chemical substance that helps digest fats.