They grow as single cells that reproduce by asexual budding and oval or round in shape. Some yeast produce chains of elongated cells (pseudohypha) that resemble the mycelium of molds.

酵母菌是单细胞以无性出芽方式繁殖,通常圆形或卵圆形。有一些酵母菌能形成假菌丝，类似霉菌的菌丝体。