Select the incorrect statement out of the five given below about lac operon when Lactose is present in the medium. a) Gene - A gets transcribed into mRNA which produces β-galactoside permease b) ... polymerase transcribe Z-gene, Y-gene and A-gene e) Allolactose is the inducer of lac operon Answer : Gene – A gets transcribed into mRNA which produces β-galactoside permease b) Inducer-Repressor complex is formed...
5. Lac operon transcribed when a) lactose is needed by the cell b) lactose is available to the cell c) lactic acid is needed by the cell d) lactic acid is available to the cell Answer : b) lactose is available to the cell...
5. In E coli Lac operon gets switched on when: a) Lactose is present and binds to the repressor b) Repressor binds to the operator c) RNA polymerase binds to the operator d) Lactose is present and binds to the RNA polymerase Answer : a) Lactose is present and binds to the repressor...
Select the correct match : (1) Alec Jeffreys – Streptococcus pneumoniae (2) Alfred Hershey and – TMV Martha Chase (3) Matthew Meselson – Pisum sativum and F. Stahl (4) Francois Jacob and – Lac operon Jacques Monod Answer : (4) Francois Jacob and – Lac operon Jacques Monod...
A group of genes whose activity is coordinated by a DNA site is called: (1) operon (2) cistron (3) polysome (4) polypeptide Answer : operon...
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