A cell with the salt concentration of 55% is placed into a solution with a 45%salt concentration. Is the solution hypotonic or hypertonic to the cell? Which direction will the water move, into the cell or out?

the answer is:

carbon dioxide

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.