Yeasts are members of a higher group of microorganisms called fungi . They are single-cell organisms of spherical, elliptical or cylindrical shape. Their size varies greatly but are generally larger than bacterial cells.
The main difference between yeast and bacteria is that yeast is a eukaryote whereas bacteria are prokaryotes. Further, yeast belongs to the kingdom Fungi while bacteria belong to the kingdom Monera. And yeast has membrane-bound organelles, but bacteria has no membrane-bound organelles.
