wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which of these molecules act as an inducer in Lac operon?

A
Allolactose
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Lactic acid
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Galactose
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Glucose
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Allolactose
When the lactose is available, some of the molecule gets converted into allolactose inside the cell. When Lactose is converted to allolactose by beta galactosidase, it acts as an inducer. This allolactose molecule binds with the repressor proteins thus bringing conformational changes in the repressor molecule. Any change in the structure of repressor proteins does not allow it to bind with the operator region and ultimately leading to switch on of lac operon.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Enzymes
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon