Across
- 4. electrons An outer shell electron that is responsible for the chemical properties of the atom
- 5. A biologically active organic compound with four rings specifically arranged
- 8. Attraction of like molecules
- 9. A multi-branched polysaccharide of glucose that serves as a form of energy storage in animals, fungi, and bacteria.
- 11. Builds complex molecules from simpler ones
- 13. Absorbs more energy than it releases
- 14. An intermediate state that is formed during the conversion of reactants into products.
- 15. A measure of how difficult it is to break the surface of a liquid
- 17. A carbohydrate, called "milk sugar"
- 19. A polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes.
Down
- 1. Sugar composed of galactose and glucose and is C₁₂H₂₂O₁₁
- 2. Attraction of unlike molecules
- 3. A community of plants and animals that have a common environment
- 6. Releases more energy than it absorbs
- 7. The amount of energy required to break up molecules into atoms
- 10. A large, structural polysaccharide made from chains of modified glucose, found in the exoskeleton of insects
- 11. The place on an enzyme where a non-substrate binds to it and changes the enzyme's shape to make it inactive
- 12. The amount of heat required to transform water into vapor
- 16. Breaks down large molecules into simpler ones
- 18. A group of compounds; prevents excessive bleeding