Q. The first step in catabolism of lactose by the bacteria is ________________ of a linkage bond.

View solution

Q. Under minimal conditions, the cell has fewer than 5 copies of enzyme β-galactosidase.

View solution

Q. Enzymes of __________________________ are clustered together in a bacterial operon.

View solution

Q. When was the operation mechanism of a bacterial operon first elucidated?

View solution

Q. In a bacterial operon, which is located downstream of the structural genes?

View solution

Q. The structural genes in an operon lie adjacent to one another.

View solution

Q. Which is a DNA-binding protein?

View solution

Q. The repressor protein is encoded by _________________

View solution

Q. The capability of the repressor to bind the operator depends upon _____________

View solution

Q. The lac operon consists of ____ structural genes.

View solution

Q. Which of the following acts as an inducer in the lac operon?

View solution

Q. The lac operon is under positive control, a phenomenon called _________________

View solution

Q. Which of the following acts as a co-repressor in tryptophan operon?

View solution

Q. In bacteria, mRNAs bound to small metabolites are called ______________

View solution

Q. The sheep Dolly was cloned in the year ___________

View solution

Q. Single cells from an adult animal can give rise to whole new individuals.

View solution

Q. How many types of cells were fused in the cloning of Dolly?

View solution

Q. The transcriptional state of a cell is irreversible.

View solution

Q. The processing-level control is concerned with ____________

View solution

Q. What percent of a typical Red blood cell is constituted by hemoglobin?

View solution