Chapter 3: Diffusion, Osmosis and Active Transport: Volume Ratio

Define Diffusion.

It is the "net movement of ions or molecules" from a region of "higher concentration to a region of low concentration" "down a concentration gradient".

Cell

________ becomes flaccid when water moves out of the ________ via osmosis.

Define Osmosis.

It is the "movement of water molecules" from a "solution of higher water potential to a solution of lower water potential" "through a partially permeable membrane".

Define Active Transport.

It is the process in which "energy is used" to "move the particles" of a substance "against a concentration gradient" from a region where they are in "low concentration to a region where they are in high concentration".

What are turgid cells?

They are described as when they are "swollen" due to a "high water content inside the cell" and are "causing turgor pressure".

What is turgor Pressure?

It is the "pressure on the cell wall" from the cell membrane pushing upon it.

What is plasmolysis?

It is the "shrinkage of cells" when "no or too little water is present inside".