Across
- 3. situation in which the extracellular fluid has the same osmolarity as the fluid inside the cell, resulting in no net movement of water into or out of the cell
- 4. situation in which extracellular fluid has a higher osmolarity than the fluid inside the cell, resulting in water moving out of the cell
- 5. process of passing bulk material out of a cell
- 6. transport of water through a semipermeable membrane according to the concentration gradient of water across the membrane that results from the presence of solute that cannot pass through the membrane
- 8. single-celled organism that lacks organelles and does not have nuclei surrounded by a nuclear membrane
- 10. smallest fundamental unit of structure and function in living things
- 11. phospholipid bilayer with embedded or attached proteins, that separates the internal content of the cell from its surrounding environment
- 13. cell that has a membrane-bound nucleus and several other membrane-bound compartments or sacs
Down
- 1. passive process of transport of low-molecular weight material according to its concentration gradient
- 2. materials diffuse across the plasma membrane with the help of membrane proteins.
- 4. situation in which extracellular fluid has a lower osmolarity than the fluid inside the cell, resulting in water moving into the cell
- 5. type of active transport that moves substances, including fluids and particles, into a cell
- 7. core of an atom; contains protons and neutrons
- 9. small structures that exist within cells and carry out cellular functions
- 12. method of transporting material that requires energy
- 14. a biological concept that states that all organisms are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells