For the
problem presented, the answer that would justify this statement is Apo-repressor
can only bind to the operator site of trp operon when a tryptophan molecule,
which is a co-repressor, binds to it. The correct answer between
all the choices given is the first choice or letter A. I am hoping that this
answer has satisfied your query about this specific question.
 
        
                    
             
        
        
        
I think A would be the answer
        
             
        
        
        
Well we have 46 and they end up having an extra chromosome so 47
        
             
        
        
        
The nervous system helps:
Receptors in muscles provide the brain with information about body position and movement.
The brain controls the contraction of skeletal muscle.
The nervous system regulates the speed at which food moves through the digestive tract.
The nervous system regulates respiratory rate
The nervous system regulates heart rate and blood pressure.
Source: https://faculty.washington.edu/chudler/organ.html
 
        
             
        
        
        
Answer:
Positive
Explanation:
Hydrotropism is how a plant responds to water in a growing way. Positive means towards and negative means away. Roots grow toward the source of moisture, making that relationship positive.