Nucleus,
Chloroplasts
ATP,
Endoplasmic Reticulum
        
                    
             
        
        
        
Answer:
d. Tryptophan would bind to the repressor
Explanation:
However,the repressor would not be able to bind to the operator and switch off transcription.The cell would still be making tryptophan even though it is being supplied by the medium in which it is growing.This is a waste of energy.
 
        
             
        
        
        
It is the order of classification which consists of 
Kingdom-Phylum-class-order-family-genus-species.
Please mark me as brainliest.