1. Most human cells are 10 to 15 _______________ in diameter.

2. When a hormone cannot get into a cell, it activates the formation of a/an _______________ in the cell.

3. _______________ channels in the plasma membrane open or close in response to changes in the electrical charge on a membrane.

4. The force exerted on a membrane by water is called _______________ .

5. A concentrated solution that causes a cell to shrink is said to be _______________ to that cell.

6. Fusion of a secretory vesicle with the plasma membrane, and release of the vesicle's contents, is called _______________ .

7. Two organelles that are surrounded by a double unit membrane are the _______________ and _______________ .

8. Liver cells can detoxify alcohol with two organelles, the _______________ and _______________ .

9. An ion gate in the plasma membrane that opens or closes when a chemical binds to it is called a/an _______________ .

10. The space enclosed by unit membranes of the Golgi complex, smooth ER, and rough ER is called the _______________ .

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