Question: A Berliner is made from what single-celled microorganisms of the fungus kingdom?

Context paragraphs:
Mycorrhizosphere: The mycorrhizosphere is the region around a mycorrhizal fungus in which nutrients released from the fungus increase the microbial population and its activities.  The roots of most terrestrial plants, including most crop plants and almost all woody plants, are colonized by mycorrhiza-forming symbiotic fungi.  In this relationship, the plant roots are infected by a fungus, but the rest of the fungal mycelium continues to grow through the soil, digesting and absorbing nutrients and water and sharing these with its plant host.  The fungus in turn benefits by receiving photosynthetic sugars from its host.  The mycorrhizosphere consists of roots, hyphae of the directly connected mycorrhizal fungi, associated microorganisms, and the soil in their direct influence.

Schizophyte: Schizophyte was a botanical classification proposed by Ferdinand Cohn to describe the class of primitive "plants" that reproduce solely by fission.  It has been considered synonymous with the Protophyta of Sachs and the Monera of Haeckel.  In modern taxonomy, it is equivalent with the concept of prokaryotes, single-celled microorganisms with no nucleus or other membrane-bound organelles, now divided into the domains Bacteria and Archaea.

Entomophthoromycota: Entomophthoromycota is a fungus division.  In 2007, it was placed at the taxonomic rank of subphylum in the most recent revision of the entire fungus kingdom.  In 2012, it was raised to the rank of phylum as "Entomophthoromycota" in a scientific paper by Richard A. Humber 2012.  Divided into three classes and six families (Ancylistaceae, Basidiobolaceae, Completoriaceae, Entomophthoraceae, Meristacraceae, and Neozygitaceae), it contains over 250 species that are mostly arthropod pathogens or soil- and litter-borne saprobes.

Malaria: Malaria is a mosquito-borne infectious disease affecting humans and other animals caused by parasitic protozoans (a group of single-celled microorganisms) belonging to the "Plasmodium" type.  Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches.  In severe cases it can cause yellow skin, seizures, coma, or death.  Symptoms usually begin ten to fifteen days after being bitten.  If not properly treated, people may have recurrences of the disease months later.  In those who have recently survived an infection, reinfection usually causes milder symptoms.  This partial resistance disappears over months to years if the person has no continuing exposure to malaria.

Mycotoxin: A mycotoxin (from the Greek μύκης "mykes", "fungus" and τοξικόν "toxikon", "poison") is a toxic secondary metabolite produced by organisms of the fungus kingdom and is capable of causing disease and death in both humans and animals.  The term 'mycotoxin' is usually reserved for the toxic chemical products produced by fungi that readily colonize crops.  One mold species may produce many different mycotoxins, and several species may produce the same mycotoxin.

Berliner (doughnut): A Berliner Pfannkuchen ("Berliner" for short) is a traditional German pastry similar to a doughnut with no central hole, made from sweet yeast dough fried in fat or oil, with a marmalade or jam filling and usually icing, powdered sugar or conventional sugar on top.  They are sometimes made with chocolate, champagne, custard, mocha, or "advocaat" filling, or with no filling at all.

Marine microorganism: Marine microorganisms are defined by their habitat as the microorganisms living in a marine environment, that is, in the saltwater of a sea or ocean or the brackish water of a coastal estuary.  A microorganism (or microbe) is any microscopic living organism, that is, any life form too small for the naked human eye to see, needing a microscope.  Microorganisms are very diverse.  They can be single-celled or multicellular and include all bacteria and archaea and most protozoa, as well as some species of fungi, algae, and certain microscopic animals, such as rotifers.

Yeast: Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom.  The first yeast originated hundreds of millions of years ago, and 1,500 species are currently identified.  They are estimated to constitute 1% of all described fungal species.  Yeasts are unicellular organisms which evolved from multicellular ancestors, with some species having the ability to develop multicellular characteristics by forming strings of connected budding cells known as pseudohyphae or false hyphae.  Yeast sizes vary greatly, depending on species and environment, typically measuring 3–4 µm in diameter, although some yeasts can grow to 40 µm in size.  Most yeasts reproduce asexually by mitosis, and many do so by the asymmetric division process known as budding.

Phylum: In biology, a phylum ( ; plural: phyla) is a level of classification or taxonomic rank below Kingdom and above Class.  Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature for algae, fungi, and plants accepts the terms as equivalent.  Depending on definitions, the animal kingdom Animalia or Metazoa contains approximately 35 phyla, the plant kingdom Plantae contains about 12, and the fungus kingdom Fungi contains about 7 phyla.  Current research in phylogenetics is uncovering the relationships between phyla, which are contained in larger clades, like Ecdysozoa and Embryophyta.

Archaea: The Archaea ( or or ) constitute a domain and kingdom of single-celled microorganisms.  These microbes (archaea; singular archaeon) are prokaryotes, meaning they have no cell nucleus or any other membrane-bound organelles in their cells.

Supporting paragraphs: Berliner (doughnut) Yeast
Answer: Yeast