Answer:
1. symbiont
Explanation:
Symbionts are organisms interacting in a biological relationship that can be of the type mutualistic, commensalistic, or parasitic
In this case, there is a relationship of commensalism between two organisms: the human and the bacterium.
Commensalism is a relationship between two symbionts where one benefits and the other is not harmed or helped. Commensalism it is derived from the word commensal (old french), used for human social interaction. Sometimes the word commensal is used in biology, however, the term symbiont is used more frequently to refer biological relationships.
The organism that Michelle is studying can best be classified into the domain EUKARYA.
The three domain classification system was introduce by a scientist named Carl Woese. The classification system categorizes all living organisms into three basic domains, which are: archaea, bacteria and eukarya. The archaea and the bacteria groups represent the prokaryotes while the eurkarya group represent the eukaryotes. Eukaryotic organisms are divided into plants and animals. The eukaryotic plants, even though they are multi cellular like animals have some features, which distinguish them from the animals, these include: ability to produce their own food and inability to move around their environment.
