The organisms can be divided into three domains, based on the type of cell that the organism is made of:
<span><span>Bacteria domain: cells do not contain a nucleus. </span><span>Archaea: cells don't contain a nucleus and they have a different cell wall from bacteria.</span><span> Eukarya: </span></span>They keep their genetic material inside the nucleus. Composed by animals, protists, plants and fungi
Letter a) Protists would have less permeable membranes than those in hypotonic or Isotonic environments, wlowing less water to enter the coll. Also, they could possibly develop higher salt concentration within the cell to retain water.
