cells

1. the plant cells that have lignin in the walls and carry water
3. the gel-like substance that supports the organelles within the cell
9. the turning on and off of genes that allows cells to become specialized (becoming different)
12. the control center of the cell: contains DNA as chromatin
13. root hair cells have lots of mitochondria so they can absorb minerals by ............ transport
16. a cell with a nucleus and membrane-bound organelles
19. stem cells with the complete genome, still able to become any type of cell within the body
21. a cell with structures that allow it to carry out its intended function
22. cells that are specialized to contract and cause movement
23. a circular piece of DNA, separate from the main genome found in bacteria and often used in bacterial transformation
24. wall the rigid, protective outer barrier of some cells. in plants it is made of cellulose
25. the site of photosynthesis in plant cells

2. The projections on an intestinal cell to increase the surface area
4. male reproductive cells. they are haploid and have flagellum to allow for movement
5. the site of protein synthesis. found free in the cytoplasm as well as attached to the Rough ER.
6. a cell with many branching projections to carry electrical signals
7. cells that are specialized to attack and engulf pathogens that enter the body
8. the powerhouse of the cell. the site of cellular respiration.
10. stem cells that have had some genes turned off, so they can become only certain types of cells within the body
11. rectangular plant cells that do most photosynthesis
14. cells that are specialized to carry oxygen within the body
15. a cell without a nucleus or membrane-bound organelles, and sometimes a flagella
17. area of the plant cell used for storage of water and waste
18. cells plant cells that control the opening and closing of stomata
20. the fluid boundary surrounding all cells controlling what goes in and out