Chapter 7 Vocabulary

2. gives instructions for the cell's activities
7. control center of the cell
9. powerhouse of the cell
11. idea that all living things are composed of cells, that cells are the basic unit of structure and function in living things, and that new cells are only produced from existing cells
12. process by which organisms maintain a relatively stable internal environment
13. basic unit of all forms of life
14. when comparing two solutions, the solution with the greater concentration of solutes
15. stores food, water and wastes
17. double layered sheet that forms the core of nearly all cell membranes
18. organelle that regulates what enter and leaves the cell
20. produces proteins
21. a substance that only allows certain materials though it
24. diffusion of water through a selectively permeable membrane
26. modifies, sorts and packages proteins
27. digests and removes wastes
29. produces food through photosynthesis, only found in plant cells
30. group of tissues that work together to perform closely related functions

1. when comparing two solutions, the solution with the lesser concentration of solutes
3. transports materials throughout the cell
4. organism whose cells contain nuclei
5. device that produces magnified images of structures that are too small to see with only the unaided eye
6. assists during mitosis, only in animal cells
8. supports and protects the cell, only found in plant cells
10. unicellular organism lacking a nucleus
16. covers and protects the nucleus
19. group of similar cells that perform a particular function
22. jellylike substance that protects the organelles
23. process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated
25. group of organs that work together to perform a specific function
28. produces ribosomes