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酵母菌的形状与大小

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2022-05-12 22:06

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大多数酵母菌为单细胞，形状因种而异。基本形态为球形、卵圆形、圆柱形或香肠形。某些酵母菌进行一连串的芽殖后，长大的子细胞与母细胞并不立即分离，其间仅以极狭小的接触面相连，这种藕节状的细胞串称为假菌丝。菌体无鞭毛，不能游动。酵母菌的细胞直径约为细菌的10倍，其直径一般为2～5μm，长度为5～30μm，最长可达100μm。每一种酵母菌的大小因生活环境、培养条件和培养时间长短而有较大的变化。最典型和最重要的酿酒酵母细胞大小为（2.5～10）μm×（4.5～21）μm。

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