Animal cells are healthiest in an isotonic environment. And plant cells are healthiest in a hypotonic environment. Would you recommend a hyperosmotic, isoosmotic or hypoosmotic solution for: 

a. Cells to be grown in tissue culture A. plant cell --------------------an animal cell ------------------------

b. a cell that will be photographed to show the organelles A plant cell -----------------------an animal cell------------------------ 

c. a cell that will subsequently be frozen A plant cell------------------- an animal cell -------------------------------