The cell membrane contains channels and pumps that move materials from one side to the other. what are these channels and pumps made of?

Amoeba sisters video recap pedigrees

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?