The “on” or “off” switch for operon expression is an important adaptation as it allows cells to respond to environmental changes actively and efficiently. The first described operon was the lactose operon in Escherichia coli, also commonly referred to as the lac operon [3]. How does the ...
Lactose intolerance is the inability to break down lactose due to a loss of sufficient lactase enzymes. A lack of lactase enzymes leads to to lactose...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question ...
Remember, glucose or galactose cannot act as inducers for lac operon. Can you think, of how long the lac operon would be expressed in the presence of lactose? View Solution Assertion :- Lac opertor is present only in lac operon & it interact specifically with lac repressor only. ...
16. What will happen to the expression of lac operon if there is a mutation in the lac Y gene which resulted in a non-functional protein product?D A Expression of the lac operon would cease immediately. B The lac operon would be expressed continuously regardless of condition. C The lac ...
What kind of protein is lactase, the biomolecule that speeds up the breakdown of lactose? How does lactose (allolactose) regulate the lac operon? What causes lactose intolerance in humans? (a) Lack of glucose in the adult intestine (b) Lac...
The latter is produced by the lac operon in Escherichia coli.[citation needed] In nature, lactose is found primarily in milk and milk products. Consequently, various food products made with dairy-derived ingredients can contain lactose.Galactose metabolism, which converts galactose into glucose, is...
DThe call of Death. Submit What does renal calculi refer to? View Solution Remember, glucose or galactose cannot act as inducers for lac operon. Can you think, of how long the lac operon would be expressed in the presence of lactose?
Lac Operon is the best example of Cis-gene. Lac operon is operon (defined above) that is required for transport and metabolism of lactose in bacteria E. coli. This cis genes encode enzymes namely β-galactosidase, lactose permease, and thiogalactoside transacetylase. These genes are adjacent ...
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Are transcription factors in prokaryotes always repressors, like in the lac operon, or can they sometimes aid transcription instead? What is Direct Reversal with regards to DNA repair systems ? Can DNA be extracted from a dead species?