Across
- 1. excretion; the removal of soluble waste materials. Egestion; the removal of non soluble waste materials. Secretion; the release of biosynthesized substances.
- 4. adenosine Triphosphate.
- 6. all cells have a cell membrane.
- 10. a rigid structure on the outside of certain cells.
- 14. the study of cells.
- 17. the semipermeable membrane between the cell contents and either the cell wall or the cells surroundings.
- 18. breaks down large molecules into smaller molecules.
- 19. a jellylike fluid inside the cell in which the organelles are suspended.
- 22. maintains the status quo.
- 24. all cells have the ability to move.
- 26. enzymes fit together perfectly.
Down
- 2. has a nucleus, and organelles.
- 3. a network of fibers that holds the cell together, helps the cell to keep its shape.
- 5. these are 7 functions: absorption, digestion, biosynthesis, moving substances out of the cell, respond to the environment, maintain homeostasis, and protection.
- 6. does not have a nucleus or organelles.
- 7. large protein molecules in all cells which exert strict control over which chemical reactions occur and when by lowering the activation energy required to start a reaction.
- 8. this states that cells are the basic units of life, all living things are made of cells, and all cells are made from other cells
- 9. the process of making molecules using absorbed molecules.
- 11. allows useful substances in and keeps harmful substances out.
- 12. the movement of molecules from an area of high concentration to low concentration.
- 13. the study of energy transformation within systems.
- 15. an organelle composed of an extensive network of folded membranes that preforms several tasks within the cell.
- 16. the organelles in which nutrients are converted to energy.
- 20. the organelle in animal cells responsible for hydrolysis reactions that break down proteins.
- 21. membrane bound sac.
- 23. the organelles where proteins and lipids are stored and then modified to suit the needs of the cell.
- 25. holds the main DNA of the cell
