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Repressible operon system is usually fou...

Repressible operon system is usually found in (i)____ pathways. The pathway's end product serves as a (ii) ______ to activate the repressor, turn off enzyme synthesis and prevent overproduction of the end product of the pathway. Genes for this operon are usually switched (iii)_____ and the repressor is synthesised in an (iV)_____ .

A

`{:("(i)","(ii)","(iii)","(iv)"),("anabolic","corepressor","on","inactive"):}`

B

`{:("(i)","(ii)","(iii)","(iv)"),("anabolic","inducer","off","active"):}`

C

`{:("(i)","(ii)","(iii)","(iv)"),("catabolic","inducer","off","active"):}`

D

`{:("(i)","(ii)","(iii)","(iv)"),("catabolic","corepressor","on","inactive"):}`

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The correct Answer is:
c
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