Operons are the functional units of transcription and genetic regulation. These are found in bacteria and their viruses where genes coding for functionally related proteins are grouped along the DNA.
The two types of operons are- inducible and repressible. 
They regulate the genes as in negative inducible operons, a regulatory repressor protein is bound to the operator. It prevents the transcription of the genes on the operon. If positive inducer is present, it binds to the repressor and changes its conformation so it is unable to bind to the operator.
 
        
             
        
        
        
Why is your question in Biology section, it should be in mathematics or in physics but that's OK
The answer of A is - 21.6666666666 or 21.7 
The answer of B is - 21.6666666666 or 21.7 
the answer of A and B are equal because speed and velocity is the same thing 
 
        
             
        
        
        
The process that produces the most ATP per molecules of glucose is C) <span>Glycolysis in a human liver cell.</span>
        
             
        
        
        
I believe the correct answer to this question is B. 
This is the correct answer because the other options can be eliminated and this choice represents the proper process described in the question. Answer choice A describes photosynthesis, which is not being asked about in the question. Answer choices C and D are either partially false or describe an unmatching process with the question. 
I hope this is correct and helps you!