单选题:果酒变酸、泡菜变酸、腐乳外部致密的一层“皮”,与其相关的微生物分别是(  )。

  • 题目分类:初中生物
  • 题目类型:单选题
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题目内容:

果酒变酸、泡菜变酸、腐乳外部致密的一层“皮”,与其相关的微生物分别是(  )。 A.醋酸菌、醋酸菌、毛霉
B.乳酸菌、乳酸菌、酵母菌
C.醋酸菌、乳酸菌、毛霉
D.乳酸菌、醋酸菌、酵母菌

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基因B是控制矮牵牛蓝色花色素合成的基因,其碱基序列已知,利用基因工程技术培育蓝玫瑰.下列操作不正确的是(  )。 A.从蓝色矮牵牛细胞获得基因 B.连接基因B

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