In some cases, a municipality will go from a fractional level of assessment to 100 percent. If the original level of assessment was 10 percent, and the current level of assessment is 100 percent, your assessed value could go from $9,000 to $90,000, and you might not see any increase in taxes.f the original level of assessment was 10 percent, and the current level of assessment is 100 percent, your assessed value could go from $9,000 to $90,000, and you might not see any increase in taxes.
The cell membrane is selectively permeable, meaning it only lets certain things in and out of the cell. If you think about our building analogy, this can be a very important thing. You wouldn't want just anyone running in and out of the White House, for example.
The most important property of the cell membrane is its selective permeability: some substances can pass through it freely, but others cannot. Small and nonpolar (hydrophobic) molecules can freely pass through the membrane, but charged ions and large molecules such as proteins and sugars are barred passage.The selective permeability of the cell membrane allows a cell to maintain its internal composition at necessary levels.mall and nonpolar (hydrophobic) molecules can freely pass through the membrane, but charged ions and large molecules such as proteins and sugars are barred passage. The selective permeability of the cell membrane allows a cell to maintain its internal composition at necessary levels.