Kbiotech Quiz (October)
Rules and regulations
In CSIR-UGC NET second paper is Short answer type question are asked. For answering these questions you must have the basic knowledge of the subject. These questions pushes you to think. Here is the question of that pattern.
Lactose is a disaccharide of galactose and glucose. When the bacterium is in an environment that contains lactose as the sugar source it expresses the following structural genes.
2. Lactose permease
3. Thiogalactoside transacetylase
These enzymes are located adjacent to each other in the E. coli genome and coded by lacZ, lacY and lacA respectively. These enzymes are regulated by the sequence called lac Operon.
In order to metabolize lactose, the structural genes must be expressed and the protein products produced. Presences of Lactose turn on the operon by binding and changing conformation of repressor.
These are Short answer type question; do not write more then 3 line for an answer
Send your answer on or before 30th of this month to firstname.lastname@example.org