Protista, of course.
protista, e.g phycomycetes , myxomycetes , which are unicellular but have complex cellular structure i-e have a true nucleus.
A cell. Cells are the basic unit of life. Unicellular organisms can perform life tasks on its own, and they are one cell. Multicellular organisims have more than one cell (you and I), and can also perform life tasks.
Both are from Domain Eukarya, are unicellular and are water organisims
they help us digest food
fossils
Autotrophs are producers, making their own food. Heterotrophs are the opposite and cannot produce their own food, therefore getting it from another source.
heterotrophs
Unicellular organisims are organisims that only have one cell like a zebra only has one cell.
Heterotrophs must 'eat' other organisims in order to survive and make ATP, while autotrophs (such as plants) make their own food from the air
One good reason for that would be that O2 levels, the product of autotrophs, was not high in the early atmosphere. So, you needed autotrophs to build that O2 level to an appreciable amount of oxygen in the air. Since there was anaerobic life before autotrophs one could be reasonable sure they were hetertrophic.
A unicellular organism is a life form consisting of a single cell.
Organisims that make its own food is called a AUTOTROPH for example PLANT
protista, e.g phycomycetes , myxomycetes , which are unicellular but have complex cellular structure i-e have a true nucleus.
autotroph is any animal that makes its own food, as opposed to heterotrophs that rely on other organisims for food
No group of animals make their own food. Only plants and some bacteria do.
Archaea also are based for bacteria since bacteria is unicellular so is archaea.ALSO they both have the same organisims.
They lack a nucleus. They are prokaryotes. They are unicellular.