Question 1
In the absence of β-galactosides, the lac operon is expressed:
◦ at a very low level.
◦ at moderate level.
◦ at high level.
◦ constitutively.
◦ not at all.
Question 2
The ability of one site in a protein to control the activity of another site in the same protein is called:
◦ coordinate regulation.
◦ repression.
◦ allosteric control.
◦ autogenous regulation.
◦ activation.