Lactose operon produces enzymes
$b-$galactosidase, permease and glycogen synthetase.
$b-$galactosidase, permease and transacetylase.
permease, glycogen synthetase and transacetylase.
$b-$galactosidase, permease and phosphoglucose isomerase.
Repressor protein is formed from
In lac operon, $z$ gene codes for:
A low level of expression of lac operon occurs at all the time. Can you explain the logic behind this phenomena.
Select the two correct statements out of the four $(i-iv)$ given below about lac operon.
$i.$ Glucose or galactose may bind with the repressor and inactivate it.
$ii.$ In the absence of lactose, the repressor binds with the operator region.
$iii.$ The z-gene codes for permease.
$iv.$ This was elucidated by Francois Jacob and Jacque Monod.
How many of the given statements $(i-iv)$ is/are correct?
$i.$ In transcription, adenosine pairs with uracil.
$ii.$ Regulation of lac operon by repressor is referred to as positive regulation.
$iii.$ The human genome has approximately $50,000\; genes.$
$iv. $ Haemophilia is a sex-linked recessive disease.