Questions
Lactose is a substrate for
a
galactosidase
b
α-galactosidase
c
β-galactosidase
d
γ-galactosidase
detailed solution
Correct option is C
Lactose is the substrate for the enzyme beta (β) galactosidase and it regulates the switching on and off of the lac operon. Hence, it is termed as inducer.Talk to our academic expert!
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Number of regulatory and structural genes present in lac operon are
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