Across
- 2. membrane every cell has one to let things in and out
- 4. site of photosynthesis
- 7. loosely packed DNA
- 12. bond two molecules share their electrons
- 15. unit of DNA
- 17. site of protein synthesis
- 19. type of passive transport
- 20. macromolecule that serves many jobs
- 21. diffusion of water across membranes
- 22. a macromolecule made of fatty acids
Down
- 1. type of organisms do not have a nucleus
- 3. can make their own energy
- 5. brings amino acids to the ribosome
- 6. a 2-ringed nitrogen base
- 8. gametes have half of the needed genetic info
- 9. eat to take in energy
- 10. contains both the dominant and recessive allele
- 11. with oxygen
- 13. adenosine triphosphate
- 14. the main hub of the cell
- 16. a positive atom component
- 18. process to copy body cells