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【单选题】
单细胞微生物生长曲线中,处于稳定期的细胞的特点是?()
A.
新生细胞数与老细胞的死亡数几乎相等,处于动态平衡,细胞数目达到最高值。
B.
细胞分裂速度下降,开始积累内含物,产芽孢的细菌开始产芽孢。
C.
此时期的微生物开始 合成次生代谢产物 ,一般在稳定期的后期产物积累达到高峰,是最佳的收获时期。
D.
以上
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A.
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E.
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