A cell, plasma, or cytoplasmic membrane is the semipermeable unit membrane surrounding, ... thus play important roles in the concentrating of solutes on one side of a membrane relative to the other.

The plasma membrane is a very important structure which functions to allow certain substances to enter or leave the cell.

and their smaller fragments, internalized presumably via endocytosis, have important signaling roles at the plasma membrane and within the cytoplasm (Van Cutsem and Messiaen, 1994 ;

It is also important to remember that recent rapid freezing methods show the distances between the plasma membrane and the ECM are in fact smaller than previously observed (Roberts, 1990 ),

In the current study, we provide evidence that the expression of these defenses is dependent on adhesion between the plant cell wall and the plasma membrane.

Plant plasma membrane intrinsic proteins (PIPs) cluster in two evolutionary subgroups, PIP1 and PIP2, with different aquaporin activities when expressed in Xenopus oocytes.

This is important in regulating the concentration of many substances which must be maintained within strict limits. ... 3 Plasma Membrane Function

an important component of the plasma membrane in animal cells, cholesterol is also the precursor to the steroid hormones (e.g., sex hormones like the estrogens).

Specifically, the plasma membrane is rich in cholesterol, in amounts roughly equimolar to the sum of all the phospholipids in ... The thickness of these membranes will be important in what follows.

The interaction between the outer hair cell (OHC) lateral wall plasma membrane and the underlying cortical lattice was examined by a morphometric analysis of cell images during cell deformation.