food vacuole or granule:- used to contain food for digestion .
contractile vacuole :- used to remove excess water.
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In dialysis, a semipermeable membrane, called a dialyzing membrane, permits small solute molecules and ions as well as solvent water molecules to pass through, but it retains large particles, such as colloids. o Dialysis is a way to separate solution particles from colloids
The 1st answer (A) . That's called law of inertia.
Rest of the statements are true. But non of them are stated as laws.