| Passive transport does not require the cell to expend any energy and involves a substance diffusing down its concentration gradient across a membrane. |
| Diffusion and facilitated diffusion are two examples of passive transport. Passive transport is transport through a cell membrane that does not require energy. |
| As you may recall, we had agreed that decisions would require prior approval. |
| I had to tell the abbess the lady's name, but not yours as she did not require it. |
| What we can reasonably require an abigail Fisher to understand is that the rules are bent based on socioeconomics. |
| Railroad regulation does not require the adoption of any new principle of law. |
