Escherichia coli growing on medium having glucose is transferred to lactose containing medium. Which change occurs ?

Wild type E.coil cell are growing in normal medium with glucose. They are transferred to a medium containing only lactose as the sugar . Which one of the following changes take place

The wild type E. coli cells are growing in normal medium with glucose. They are transferred to a medium containing only lactose as sugar. Which of the following changes take place ?

The wild type E. coli cells are growing in normal medium with glucose. They are transferred to a medium containing only lactose as sugar. Which of the following changes take place ?

Escherichia coli belongs to which of the following group ?

Escherichia coli with mutated z gene of lac operon cannot grow in medium containing only lactose as the source of energy because

Escherichia coli with completely radioactive DNA was allowed to replicate in nonradioactive medium for two generations. Percentage of bacteria with radioactive DNA is :