Biology Vocab

4. Property of biological membranes that allows some substances to pass across it while others cannot
7. When the concentration of two solutions is the same
10. Unicellular organism that lacks a nucleus. DNA is not contained inside a nucleus
12. Flexible double layered sheet that makes up the cell membrane and forms a barrier between the cell and its surroundings
14. a group of organs that work together to perform a specific function
15. Water channel protein in a cell
16. Basic unit of all forms of life

1. Organism whose cells contain a nucleus that holds the DNA
2. Process of diffusion in which molecules pass across the membrane through cell membrane channels
3. states that all living things are composed of cells; cells are the basic units of structure and function in living things and that new cells are produced from existing cells
5. Process by which particles tend to move from an area where they are more concentrated to an area where they are less concentrated
6. A group of similar cells that perform a particular function
8. When comparing two solutions, the solution with the lesser concentration of solutes
9. When comparing two solutions, the solutions with the greater concentration of solutes
11. A group of tissues that work together to perform closely related functions
13. Diffusion of water through a selectively permeable membrane