Cells

1. a usually round part of most cells that is enclosed in a double membrane, controls the activities of the cell
4. the thin layer that encloses a cell's cytoplasm
5. the usually rigid nonliving permeable wall that surrounds the plasma membrane and encloses and supports the cells
6. a membrane-bound cell organelle that contains digestive enzymes
8. any cell or organism that possesses a clearly defined nucleus
13. a network of membranes inside a cell through which proteins and other molecules move

2. a thick solution that fills each cell and is enclosed by the cell membrane
3. prepares proteins and lipid (fat) molecules for use in other places inside and outside the cell
4. a plastid that contains chlorophyll and in which photosynthesis takes place
7. subcellular structure that has one or more specific jobs to perform in the cell
9. any organism that lacks a distinct nucleus
10. A sphere-shaped structure within the cytoplasm of a cell that is composed of RNA and protein and is the site of protein synthesis
11. the smallest unit that can live on its own and that makes up all living organisms
12. powerhouse of the cell