Some operons have both a positive and negative control mechanism built into the DNA sequence of the operon. That means both an activator protein and a repressor protein are present simultaneously. Consider a system that has both positive and repressible negative controls. a. Describe the four combinations of active or inactive regulatory proteins that could be present at any time in the cell.

Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:

Active repressor , Active activator.

Active repressor, Inactive activator.

Inactive repressor, Active activator.

Inactive repressor, Inactive activator.

Explanation:

Use the attached diagram for

explanations on the four combinations of active or inactive regulatory proteins in cells.

a

explanation:

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation: