Question

1. here we see molecules diffusing through a cell membrane. which of these is true? (check all that apply).

molecules try to reach equilibrium.
molecules move from areas of high concentration to areas of low concentration, this process requires energy so it is active transport.
this process does not require energy so it is passive transport.
if the molecules are water this would be an example of osmosis.
the cell membrane is semi permeable.
molecules move from areas of low concentration to areas of high concentration in order to reach equilibrium.

Explanation:

• Molecules try to reach equilibrium: Diffusion aims for equilibrium.
• This process does not require energy so it is passive transport: Passive transport (like diffusion) doesn’t need energy.
• If the molecules are water this would be an example of osmosis: Osmosis is water diffusion.
• The cell membrane is semi - permeable: Allows specific molecules through.

Answer:

• Molecules try to reach equilibrium.
• This process does not require energy so it is passive transport.
• If the molecules are water this would be an example of osmosis.
• The cell membrane is semi - permeable.