DNA is an example of a complex biological polymer called a nuclei acid. Nucleic acids are made up of many smaller sub units called nucleotides.  The components of a DNA nucleotide are deoxyribose, phosphate group, nitrogen group. There are four possible bases in a DNA molecules which includes adenine, cytosine, guanine and tymine. 
        
             
        
        
        
Explanation:
a sequence of three nucleotides which together form a unit of genetic code in a DNA or RNA molecule.
 
        
                    
             
        
        
        
I believe A is the answer, hope this helps. :)
please give brainliest.
 
        
                    
             
        
        
        
The words that comes in the blanks are phosphate group, phosphate group, a sugar group and a nitrogen base.
ATP stands for Adenosine triphosphate and DNA stands for Deoxyribonucleic acid. 
<span>ATP is a nucleotide that is similar to DNA but it has 2 extra phosphate groups.
</span>DNA is made up of a nucleotide that consist of a phosphate group, a sugar group and a nitrogen base.