Select from:
* active transport
* kinetic transport
* energetic transport
* passive transport
Q: Answer the following question given this paragraph: Passive transport occurs when a substance passes through the cell membrane without needing any energy to pass through. This happens when a substance moves from an area where it is more concentrated to an area where it is less concentrated. Concentration is the number of particles of a substance in a given volume. Let's say you dissolve a teaspoon of salt in a cup of water. Then you dissolve two teaspoons of salt in another cup of water. The second solution will have a higher concentration of salt. Q: When substances pass through the cell membrane without needing any energy what is it called? A:
A:
passive transport