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Science Quiz

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1.
1 point
Facilitated diffusion moves substances down their concentration gradient __________ using the cell's energy.
2.
1 point
The direction of water across the cell membrane depends on the concentration of free water _________.
3.
1 point
The lipid bilayer describes...
4.
1 point
Movement across the cell membrane that does NOT require energy is called __________ transport.
5.
1 point
__________ is the simplest type of passive transport.
6.
1 point
***Bonus

Organelles that collect excess water inside the cell and force water out is called...
7.
1 point
A solution that causes a cell to swell is called a _________ solution.
8.
1 point
The cell membrane is...
9.
1 point
I there is a concentration gradient, substance will move from an area of high concentration to an area of ______ concentration.
10.
1 point
In diffusion, molecules...
11.
1 point
The diffusion of water through a selective permeable membrane is called...
12.
1 point
The process of taking in material into the cell by infolding the cell membrane is called...
13.
1 point
In ___________ diffusion, membrane proteins help molecules across the membrane.
14.
1 point
The difference in the concentration of a substance across a space is called a concentration...
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