NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1
What does "lac" refer to in what we call the lac
operon ?
- AThe number 1,00,000
- BLac insect
- CLactase
- DLactose
View written solutionFree
Correct answer: D
Lactose operon in E.coli is a catabolic pathway in which the structural genes remain switched off unless the inducer (Lactose) is present in the medium.
More from Molecular Basis of Inheritance
- During transcription, the DNA site at which RNA polymerase binds is called :-2003 · MCQ
- In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids : -2003 · MCQ
- During translation initiation in prokaryotes, a GTP molecule is needed in : -2003 · MCQ
- What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA ?2003 · MCQ
- Which one of the following triplet codes, is correctly matched with its specificity for an amino acid in protein synthesis or as 'start' or 'stop' codon ?2003 · MCQ
- Degeneration of a genetic code is attributed to the : -2003 · MCQ
- Which of the following reunites the exon segments after RNA splicing ?2002 · MCQ
- In a DNA percentage of thymine is 20% then what is the percentage of guanine : -2002 · MCQ