The Cell

2. The molecule which an enzyme binds to.
4. requires the cell to use energy in order to move molecules across the membrane
5. The property of a membrane to only allow certain substances to pass across it. (Some things can pass through)
9. The types of lipid which make up the cell membrane.
11. A solution whose concentration of solute is the same as inside the cell.
13. molecules which do no dissolve in water, "water fearing"
18. Jelly-like substance the cell organelles float in
19. the movement of molecules from an area of higher concentration to an area of lower concentration
20. A complex network of proteins that strengthen the cell and keep it from rupturing.
21. Vesicles that contain enzymes to break stuff down, animal cells only
24. stores the DNA
25. Organelles that either perform photosynthesis, or store material such as starch. They are found only in plants and algae.

1. Microtubules that help pull the DNA apart during cell division.
3. lower the activation energy of reactions enough to allow them to occur safely in biological systems
6. The state of being equal or even
7. A storage "sack" in the cytoplasm that holds food or wastes.
8. A cell organelle which manufactures the cells energy molecule, ATP.
10. Organelles that make proteins
12. the study of the cells
14. Units inside all cells which perform certain functions/tasks.
15. a solution whose concentration of solute is lower than inside the cell
16. A type of plastid that performs photosynthesis.
17. structure in the nucleus which assembles ribosomes
22. A measure of disorder or randomness in a system
23. stores and transports substances