Biology Definition Review
1. _____________________ is the movement of materials across the cell membrane
without using cellular energy.
2. _____________________ is the process by which particles tend to move from an
area where they are more concentrated to an area whrer they a less concentrated.
3. _____________________ is the process molecules cannot diffuse across the
membrane alone and thus instead pass through protein channels.
4. _____________________ is the diffusion of water through a selectively
permeable membrane.
5. _____________________ is the force that solute particles attract water molecules
across the selectively permeable membrane.
6. _____________________ is the movement of materials from an area of low
concentration to an area of higher concentration.
7. _____________________ is the process of taking material into the cell through a
pocket of the cell membrane that folds into the cell.
8. _____________________ is the process that materials leave the cell instead
coming into it.
9. _____________________: the concentration is the same inside and outside the
cell.
10. _____________________: the outside solution has a higher concentration than the
solution inside the cell.
11. _____________________: the outside solution has a lower concentration than the
solution inside the cell.
12. _____________________ is relatively constant internal physical and chemical
conditions organisms maintain.
13. _____________: a group of similar cells that perform a particular function.
14. _____________: a group of tissues that work together to perform closely related
functions.
15. _____________: a group of organs that work together to perform a specific function.
16. The Level of the Organization
17. Cells in a large organism use _______________________to communicate. To
understand the information, a cell must have a ________________________.