How would you demonstrate that all cells come from preexisting cells? a. using a microscope observe a single-celled bacterium

b. observe a bacterium performing binary fission to form clones of itself

c. collect an algae sample and observe it move toward light in a container

d. observe a nerve cell carrying a message to another cell

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?