What is true about the structure or function of the plasma membrane? a) large molecules often cross the plasma membrane while inside vesicles b) hydrophobic molecules keep the cell from getting too much water c) the bilayer structure forms a solid boundary that separates the cell from its environment. d) it is made entirely of integral proteins

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.