Membrane proteins are among the most important proteins biologically because they allow the cells to communicate with their environments. these membrane proteins are responsible for all but which process?
a) triggering ion channels
b) identifying foreign cells
c) regulating intake of oxygen
d) activating growth hormone reactions

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

multiplying and dividing the two decimals and the eqations by the same number of the overalls