Which part of a cell allows certain materials to enter the cell and other materials to exit the cell

What is true of sea slugs in these orders

Anurse is preparing to administer ampicillin 500 mg in 50 ml of dextrose 5% in water (d5w) to infuse over 15 min. the drop factor of the manual iv tubing is 10 gtt/ml. the nurse should set the manual iv infusion to deliver how many gtt/min? (round the answer to the nearest whole number. use a leading zero if it applies. do not use a trailing zero.)

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure