Answer:
The principle benefit of regulating glycolysis by the concentration of ATP is to signals the cell to stop glycolysis as sufficient amount of ATP is already present in the biological system.
Explanation:
Phosphofructokinase 1  is allosterically inhibited by ATP.Glycolysis is a catabolic as well as exergonic process which deals with the oxidation of glucose to form pyruvate along with ATP molecules.
             When ATP is present at high concentration within our body at that time there is no need to synthesize additional ATP because ATP is already present in sufficient amount.
        To maintain its own homeostasis ATP allosterically inhibit the catalytic activity of phosphofructokinase. As a result glycolysis is inhibited and the glucose molecule can be utilized in other metabolic pathways.
 
        
             
        
        
        
GnRH<span> stimulates (causes) the pituitary gland to produce </span>follicle stimulating hormone<span> (</span>FSH<span>), the hormone responsible for starting follicle (egg) </span>
        
             
        
        
        
Explanation:
While anatomy deals with the structure of the parts of an organism, physiology studies the way that the parts function together.
 
        
             
        
        
        
The wording of this is confusing. I think it’s A and B and I’m hesitant say that it’s also C but only if you know the mutation and the gene. 
Also for A you would only know a partial sequence of the gene.