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sashaice [31]
4 years ago
15

15 Pts. Will give brainliest if correct.

Biology
2 answers:
Andrews [41]4 years ago
7 0

Answer:

atmospheric nitrogen converted into early water vapor which was later pressurized into liquid

Explanation:

Stolb23 [73]4 years ago
3 0

Answer:

atmospheric nitrogen converted into early water vapor which was later pressurized into liquid

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You are doing an experiment and plated E. coliin different medias. Media A has onlyglucose, B has only lactose, and media C has
krek1111 [17]

Answer:

A. Glucose:

As lactose is absent will follow the glucose metabolism, so the lac repressor will hold tightly with the operator which leads to the prevention of transcription as RNA polymerase can not bind to promoter so no lactose metabolism.

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In the case or wild mutant lactose metabolism will occur as lactose is present, allolactose binds to the lac repressor thus the operator and promoter are free so transcription starts.  The same result will be in all test except in the case of a mutant repressor.

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Cultures grown in the presence of both glucose and lactose are metabolizing lactose. In the test (b) and (c) will be responsible due to constitutive synthesis of lac operon will happen.

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