The watershed divide of the Ural Mountains forms the natural land boundary between the continents of Europe and Asia. The range, averaging 3,000â4,000 ft. in height, extends about 1,640 miles north-south from the Arctic Ocean to the northern steppe of Kazakhstan.he watershed divide of the Ural Mountains forms the natural land boundary between the continents of Europe and Asia. The range, averaging 3,000â4,000 ft. in height, extends about 1,640 miles north-south from the Arctic Ocean to the northern steppe of Kazakhstan.
Yeasts. Yeasts are unicellular fungi. Examples: 1  Saccharomyces cerevisiae â bakerâs or brewerâs yeast. 2  Saccharomyces boulardii is a part of normal intestinal flora; available in pharmacies as probiotic, which can prevent antibiotic associated diarrhea.
The majority of fungi are unicellular or filamentous: as fungi grow they produce an intertwined mass of delicate threads that branch freely and often fuse together. Fungal forms vary: the most commonly known are mushroom-like in appearance or form spongy, creeping growths.ith the exception of unicellular yeasts, the Ascomycetes are filamentous during development and their hyphae are septate (divided into cells). Reproduction is usually by the formation of specialized spores, called conidia, borne at the tips of hyphae in specialized structures (conidiophores).