Fungi are usually multicellular structures but can also be single cellular to, like yeasts. Fungi are very peculiar because they can have qualities of animal cells but they also have qualities of plant cells which makes them unable to be classified as either one. They are heterotrophs like animal cells, but they have cell walls like plant cells. The cell structure of the fungus cell is very unique. Some are unicellular and others are multicellular. A example of a unicellular fungi is yeast, but a example of a multicellular fungi could be an underground fungus which can grow up to one thousand football fields! .
All fungi except for unicellular fungi such as yeast have cell walls. Some fungi are arranged in a structure with things called hyphae. Hyphae are thread like tubes that make up the structures of multicellular fungi. Some of the hyphae in various fungi can be long threads of cytoplasm that can contain many nuclei. The appearance of many fungi depend on which way the hyphae are arranged. If the hyphae is loosely tangled the structure might look like fuzz to the eye, like many molds. If the hyphae is packed together very tightly then the fungi may appear solid to the eye, like many mushrooms. Like the roots of trees some fungi have underground hyphae that collect food through spores in the fungi.
Despite the fact that fungi are heterotrophs, they don't take in food like humans. Fungi obtain food by absorbing it through the hyphae that grow into the food source. The first thing fungi do in order to obtain food is growing hyphae into the food source. Second, the digestive chemicals exude out of the hyphae that has grown into the food source. Third, the chemicals breakdown the food that is now able to be absorbed by the hyphae as a food source. Another way fungi can obtain food is by feeding on dead organisms. .
Fungi are usually classified into four divisions/groups. Some of these different groups can be ascomycota (yeasts and sac fungi), basidiomycota (club fungi), chytridiomycota (chytrids), glomeromycota, and zygomycota (zygote fungi, bread molds).
