Home Biology Molecular Basis of Inheritance Gene Regulation Expression The sugar lactose induces synthesis of the e…
Biology Molecular Basis of Inheritance Gene Regulation Expression Single Correct MCQ
Published on: August 13, 2026

The sugar lactose induces synthesis of the enzyme lactase. What happens when an E. coli (bacterial) cell runs out of lactose?

A
Represser protein binds to the operator.
B
Represser protein binds to the promoter,
C
RNA polymerase attaches to the promoter.
D
RNA polymerase attaches to the represser

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