3 years ago

GIVING BRAINLIEST!!!!

Biology

1 answer:

Sphinxa [80]3 years ago

6 0

The answer is A I believe.

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How do enzymes act as catalyst to speed up biological reactions

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4 years ago

In Escherichia coli, the genes lac , gal , trp , and his are necessary for utilization of lactose, utilization of galactose, syn

PolarNik [594]

Answer:

Minimal media + glucose + streptomycin

Explanation:

Those capable of synthesizing galactose can grow in minimal media, the availability of streptomycin will destroy those who are susceptible to the antibiotic, whereas glucose, a carbon source from which galactose may be produced and will encourage growth.

Therefore:

The medium should not include galactose when selecting for gal⁺.

Streptomycin should be present in the medium to select against $str^s$ .