Across
- 1. carbon compounds contains only carbon and hydrogen
- 4. the smallest unit of matter
- 7. building blocks for proteins
- 8. two or more atoms held together
- 10. a lipid that consist of glycerol, two fatty acids, and a phosphate group
- 11. a large molecule made of monomers
- 13. speeds up rate of a reaction
- 14. change substances to other substances
Down
- 1. an educated guess
- 2. composed of two or more different elements
- 3. adenosine triphosphate
- 5. a specialized structure that allows the cell to control the passage of materials into and out of the cell
- 6. composed of carbon, hydrogen, and oxygen
- 9. atoms that have gained or lost electrons
- 10. the building blocks of life
- 12. catalyst used in living organisms