Define operon and discuss the inducible or repressible system

Repressible enzymes is

Lac operon is

An operon consists of

Tryptophan operon is (a) Catabolic system (b) Repressible system (c) Inducible (d) Having three structural genes

Which is true for repressible operon :-

Define carbanion and discuss its orbital structure.

Lac-operon

Define geometrical isomerism and discuss the conditions necessary for it. Explain with at least two examples.

Define air pollution and discuss the important air pollution control measures.

In an inducible operon, the genes are