Answer:
Jacob and Monod were intellectually primed to draw the conclusions they did concerning regulation of the lac operon. In part, this was due to their fascination with mechanisms of enzyme regulation. They knew that the activity of some enzymes is regulated when their reaction product binds to the enzyme, changing its shape and therefore its activity. This knowledge allowed them to easily make the intellectual leap to propose B) allosteric regulation of the repressor
Explanation:
When we talk about the mechanisms of enzyme regulation, we refer to allosteric regulation of the repressor. The Allosteric control of transcriptional regulatory proteins allows organisms to react to changes in environmental and metabolic conditions. Also, it is s a thermodynamic phenomenon. When it binds one molecule, the affinity with which a protein binds to a second molecule is altered. 
 
        
             
        
        
        
This is a question that you would have to answer 
for example: i found a small and colorless bear looking animal(sight). When i touched it was fuzzy and soft(touch). It smelled like dirt and lavender(smell). The creature was sleeping and it was breathing slowly(hearing). I took one of its hair’s and it was like human hair(taste) 
BUT REMEMBER since it’s a species it could be an animal or human or a plant.
hopefully I could help!!
        
             
        
        
        
Cystic Fibrosis is a genetic mutation
        
             
        
        
        
ATP is an energy carrier that holds energy after processes like cellular respiration. The body can turn ATP into energy to do processes like physical movement later on. 
Hope this helps :)
        
             
        
        
        
Answer:
Test a known bloodstain as a positive control and a blank (filter paper) as a negative control (see interpretation of results to determine a positive and negative result).