观察真菌细胞内有关代谢过程图,选出提高氨基酸B产量的最佳措施

观察真菌细胞内有关代谢过程图,选出提高氨基酸B产量的最佳措施(  )

A.利用CaCl2增大该真菌细胞壁的通透性
B.大量投放丙酶
C.加大接种量和投料量
D.诱变处理该真菌,选育出不能合成乙酶的菌种作为生产菌种

答案

解:从图中可以看出,氨基酸A和氨基酸B同时积累过量时,会抑制甲酶的活性,所以提高氨基酸B产量的最佳措施就是经诱变处理选育出不能合成乙酶的菌种.
故选:D

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