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प्रश्न
Sketch and label ‘ultrastructure of mitochondrion’.
उत्तर
Ultrastructure OF MITOCHONDRIA
APPEARS IN
संबंधित प्रश्न
In lac operon, lactose acts as:
A unit of lac-operon which in the absence of lactose, suppresses the activity of operator gene is
With respect to lac- operon explain the following terms:-
- regulator gene
- promoter gene
- structural gene
- inducer
Identify the event that would occur in 'lac operon' of E. coli when the growth medium has high concentration of lactose.
Nucleic acids along with (i) and (ii) form the macromolecular fraction of the cell.
Select the two correct statements out of the four (A-D) given below about lac operon.
- Glucose or galactose may bind with the repressor and inactivate it.
- In the absence of lactose, the repressor binds with the operator region.
- The z-gene codes for permease.
- This was elucidated by Francois Jacob and Jacque Mono.
Which enzyme will produce in a cell in which there is a nonsense mutation in the lac Y-gene?
Which of the following is required as an inducer(s) for the expression of lac operon?
What is the role of a repressor gene?
Which gene acts as a regulatory gene in lac operon?
