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Question
What does "lac" refer to, in the lac operon?
What does "lac" refer to, in the lac operon?
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Solution
The correct option is B Lactose
The lac operon is a cluster of genes responsible for transport and metabolism of lactose sugar in Escherichia coli and some other bacteria. The mechanism of regulation of expression of genes, responsible for coding the involved enzymes was first explained by Francois Jacob and Jacques Monod.
Lactase is an enzyme located in on the brush border of the small intestine of humans and other mammals that breaks down lactose, the milk sugar. Lac insect, Laccifer lacca, secretes a sticky, resin like material called lac which is used to produce shellac and a red dye. The number 1,00,000 is not associated with operon. Hence option A is the correct answer.
The lac operon is a cluster of genes responsible for transport and metabolism of lactose sugar in Escherichia coli and some other bacteria. The mechanism of regulation of expression of genes, responsible for coding the involved enzymes was first explained by Francois Jacob and Jacques Monod.
Lactase is an enzyme located in on the brush border of the small intestine of humans and other mammals that breaks down lactose, the milk sugar. Lac insect, Laccifer lacca, secretes a sticky, resin like material called lac which is used to produce shellac and a red dye. The number 1,00,000 is not associated with operon. Hence option A is the correct answer.
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