Question

1)What would happen if a marine amoeba is place in fresh water?
2) what would happen if a fresh water amoeba is place in marine water?

Answer 1

1. As the amoeba prevents the salt from entering, instead the solution will pull water out of the amoeba, concentrating the salts inside. When this happens the amoeba will appear to shrink. If a brine amoeba is put into fresh water and it is not a cyst at the time, its contractile vacuole will burst .

2.When an amoeba is put into salt water with enough concentration, some of its organelles, like the contractile vacuole, are damaged. As the amoeba prevents the salt from entering, instead the solution will pull water out of the amoeba, concentrating the salts inside. When this happens the amoeba will appear to shrink.