Biology questions?

Question

1. How are bacterial cells adapted to live in a hypotonic enviorment?

2. How are amoebas adapted to live in hypotonic enviorments?

Answer 1

1. Bacteria that gain too much water due to living in a hypotonic environment avoid breaking open by having a cell wall. The cell wall gives a relatively inflexible surrounding so the cells don't break.

2. Amoebae don't have cell walls, so they have to get rid of the extra water that comes in from a hypotonic environment. For this purpose they have organelles called contractile vacuoles. The contractile vacuoles collect water inside the cell and eject the excess water into the environment.

Answer 2

proteoglycan membrane with selective transport mechanisms.