<span>The person needs to report black stools that are tarry. These stools are an indication that there is bleeding. This occurs when digested blood gets in the stool. The stool will smell harshly. A person with a peptic ulcer must report this type of stool immediately.</span>
        
             
        
        
        
The role of the diaphorase enzymes is to transfer hydrogen ions between donor and acceptor molecules.
 
        
             
        
        
        
Answer:
<em>Oh i think if you search for your friend then I think it will come... I THINK!! I am not sure... Sorry if I am wrong... I am trying to answer all the question properly.</em><em> </em><em>Have </em><em>a </em><em>nice </em><em>day:</em><em>)</em>
 
        
             
        
        
        
Answer:
Proximal convoluted tubule
Explanation:
The major work of re-absorption is carried out in nephron by the proximal convoluted tubule (PCT). The PCT re-absorbs all the essential nutrients such as amino acid, potassium, glucose etc. and water driven by passive transfer based on concentration gradient. Along with gradient, pH of the urine also affects the re-absorption. Based on the pH of the urine (basic or acid), re-absorption of ionized acid increases or decreases.  
 
        
             
        
        
        
C i think
let me know if i was right :)