However, if a child's medical condition is attention deficit hyperactivity disorder (ADHD) and, although diagnosed by a doctor, the child attends a school for the musically talented--with only a general program to address the challenges of ADHD--chances are the IRS will challenge the tuition's deductibility.
Monerans are the most primitive kingdom. Monerans are all prokaryote and are all single-celled! Protists are also single celled (according to a growing consensus) and are all eukaryote. Image from W.H. Freeman and Sinauer Associates, used by permission.
The taxonomic kingdom Protista is a collection of single-celled organisms that do not fit into any other category. Protists are a group made up of protozoa, unicellular algae, and slime molds. We will concentrate on the animal portion of this group: the protozoa (proto = first, zoa = animals).Protozoa are the oldest known group of heterotrophic life that consume and transform complex food particles into energy.rotists use contractile vacuoles to remove excess water from their cells. If the contractile function of a cell is compromised, the cell swells until it ruptures. The same will also happen to a marine protozoan when placed in fresh water; marine members have no contractile vacuoles.