Answer:
four oxygen molecules
Explanation:
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.
 
        
             
        
        
        
It's called telophase in mitosis
 
        
             
        
        
        
<span>The answer is the Hubble telescope Can receive near-infrared ultraviolet wavelengths.</span>
        
                    
             
        
        
        
the answer is D) repressor