Adaptations-. Black bears have a thick layer of fur for the cold winters,claws to climb trees and stay away from danger along with sharp teeth for protection like scaring away predators and to tear apart fish.Bears also hibernate in the winter to avoid having to find food which is difficult in the winter.
The cell membrane, or plasma membrane, surrounds and protects the internal environment of a cell; however, this is not its only function. A cell membrane also determines what materials enter or leave the cell. This ensures that the cells will be able to get rid of wastes and take up important nutrients and gases.
Best Answer: Plasma/cell membrane do have a lot of functions. It provides protection and barrier. It identifies and allows certain molecules to go in and out of the cell. Sort of security guard... If plasma membrane stopped working, well, anything can go in and out of the cell, without permisson. Because of this, the cell would be prone to foreign substances. There would be also no balance in the nutrients in the cell.