Cell Biology

2. proteins that control progress of cells through the cell cycle
3. the double layer of lipids(phospholipids) in cell or organic membranes
6. a protein that speeds up a specific chemical reaction within an organism
8. a structure composed of DNA wrapped with proteins
10. with a phosphate head attached to two long lipid tails
11. the phase where the cell is divided to make more cells
13. movement of a substance from lower concentration to higher concentration through a protein carrier
14. a group of organic compounds in cells that do not dissolve in water
15. the complete sequence of phases in which a cell divides

1. the action of a catalyst, a chemical that speeds up a chemical reaction
4. any cell produced by the division of a parent cell
5. a protein that carries molecules and ions into a cell or throughout the body
7. allowing only certain substances to pass through, while blocking passage of other substances
9. the process by which DNA is copied within each cell
12. any of more than 100 diseases that result when cells lose the normal controls that regulate their growth and divison in the cell cycle