Intro to Cells

3. A gel like substance inside a cell
7. An organism made up of many cells
10. A cell membrane that allows some materials to pass through it
11. The thread like structure of DNA that is found in living cells
13. Maintaining a stable internal condition in a changing environment
14. Cells that have a nucleus and membrane-bound organelles
16. The stage in the cell cycle where DNA is copied
17. The part of the cell cycle that results in the production of two identical cells
18. The division of the cell at the end of mitosis that creates two daughter cells
20. The smallest unit of structure and function in living things

1. Diffusion of water across the cell membrane
2. A type of transport across a cell membrane without the use of energy
4. A protective layer that covers a cell's surface and acts as a barrier between the inside of a cell and the cell's environment
5. Genetic material that provides instructions for all cell processes
6. A single celled organism that has no nucleus and no membrane bound organelles
8. An organism made up of one cell
9. A structure inside the cell that is involved in making proteins
12. Any living thing
15. A type of transport across a cell membrane that requires energy to move particles
19. The part of the cell that contains DNA in eukaryotic organisms