The following questions refer to the figure above.
-The figure illustrates
A) repression of the lactose operon.
B) promotion of the lactose operon.
C) formation of a repressor molecule.
D) attachment of lactose to DNA.
E) all of these.

Question

The following questions refer to the figure above.
-The figure illustrates
A) repression of the lactose operon. 
B) promotion of the lactose operon. 
C) formation of a repressor molecule. 
D) attachment of lactose to DNA. 
E) all of these.

Quizplus · Accepted Answer

The figure shows the binding of the lac repressor to the operator sequence, which leads to repression of the lactose operon. The presence of lactose relieves this repression by binding to the repressor and causing it to release from the operator. There is no evidence of promotion of the lactose operon or formation of a repressor molecule in the figure. There is also no attachment of lactose to DNA depicted.

The Following Questions Refer to the Figure Above