Cells Crossword

3. Living organisms respond to __ in their environment.
5. The rigid outer layer found in plant cells that provides structure is known as the __.
7. Bacteria are examples of __ cells.
8. The organelle responsible for protein synthesis is the __.
9. The process by which living things maintain a stable internal environment is called __.
12. Cells that do not have a nucleus and are generally smaller are classified as __ cells.
13. The genetic material of eukaryotic cells is contained within the __.
14. The ability to produce new individuals of the same kind is known as __.
17. Living things are made up of genetic material called __.
18. All living organisms are made up of one or more __.
19. The size of cells, a synonym for very small.
21. The jelly-like substance inside the cell that holds organelles is called __.

1. The __ is the barrier that surrounds all cells.
2. Plant cells contain __, which are responsible for photosynthesis.
4. __ cells typically have a more complex structure than prokaryotic cells.
6. The powerhouse of the cell, responsible for producing energy, is called the __.
10. A single celled organism that can make holes in your brain, but there's also the friendly sisters of science video fame.
11. We're made of more than 50 _____ cells.
15. Living things obtain and use __ for growth and energy.
16. Animal cells do not have a __, which is found in plant cells.
20. Robert Hook was the first person to see cells in his fancy microscope. What's a nickname for Robert?