MCQ on Catabolite Repression of lac Operon

A network of operons with a common regulator is called:

Allolactose is a disaccharide of D-galactose and D-glucose linked through:

Among the following, which statement is correct about the promoter of a gene?

Lactose permease, the membrane protein which facilitates the transport of lactose from the external medium into the bacterial cell is a:

Isopropyl β-D-1-thiogalactopyranoside (IPTG) used to induce lac operon in molecular biology experiments is:

In a negatively regulated operon the bound repressor will:

The functional lac repressor is a:

The transcription of lac repressor from the I gene is:

The number of secondary binding site(s) for the lac repressor in the lac operon is:

The fundamental characteristic of the CRP-cAMP complex and lac repressor in lac operon is:

In the absence of glucose, the binding of CRP-cAMP complex to the region near to the lac promoter will:

The strong induction of lac operon is favoured by:

What will happen when E. coli cells are grown in a medium containing both glucose and lactose?

The lac repressor has which of the following DNA-binding motif?

The absence of which of the following component will deduce the expression of lac structural gene?