In the _______ of lactose, the lac _______ binds to the lac _______ site.
A.
B.
C.
D.
Correct. See Key Concept 16.1 Prokaryotic Gene Expression Is Regulated in Operons
Incorrect. See Key Concept 16.1 Prokaryotic Gene Expression Is Regulated in Operons
Animation 16.1 Quiz
Which statement describes the process regulated by the lac operon?
A.
B.
C.
D.
Correct. See Key Concept 16.1 Prokaryotic Gene Expression Is Regulated in Operons
Incorrect. See Key Concept 16.1 Prokaryotic Gene Expression Is Regulated in Operons
Animation 16.1 Quiz
Refer to the figure below.
A mutant E. coli cell expresses z, y, and a genes at the same levels in the presence and absence of lactose. These levels correspond to those observed in wild-type E. coli cells in the presence of lactose. Which region of the DNA shown in the figure could contain the mutation?
A.
B.
C.
D.
Correct. See Key Concept 16.1 Prokaryotic Gene Expression Is Regulated in Operons
Incorrect. See Key Concept 16.1 Prokaryotic Gene Expression Is Regulated in Operons
Animation 16.1 Quiz
A student claims that the lac operon is an example of a mechanism that an organism uses to conserve energy. Evaluate the validity of the student’s claim.
A.
B.
C.
D.
Correct. See Key Concept 16.1 Prokaryotic Gene Expression Is Regulated in Operons
Incorrect. See Key Concept 16.1 Prokaryotic Gene Expression Is Regulated in Operons