Cells

5. a thick gelatin like material contained within the cell membrane. most of the work of the cell is carried out in the cytoplasm.
8. any factor that can change in a controlled experiment, observation, or model
10. when organisms are made up of multiple cells
11. a cell that lacks a nucleus and other organelles
12. part of the process of a sexual reproduction in which a male reproductive cell and a female reproductive cell combine to make a new cell that can develop into a new organism
14. when organisms are made up of a single cell

1. consists of a single prokaryotic cell
2. found in plant cells
3. the specific organization of a cell and its structure that allows it to perform a specific function
4. a large group of single celled organisms that sometimes cause disease
6. most complex unicellular eukaryotes
7. organelles that release energy by using oxygen to break down sugars
9. a cell in which the genetic material is enclosed within a nucleus
13. a group of similar cells that are organized to do a specific job
15. found in animal cells