Q:
      
      
         
            
Which best describes the structure of a DNA molecule?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: A) A double helix         
         
Explanation: DNA is not a single stranded and does not have amino acids. Hence options, b & C are eiminated. Dna is a double helix structure containing nucleobase—either cytosine (C), guanine (G), adenine (A), or thymine (T)—as well as a monosaccharide sugar called deoxyribose and a phosphate group. 
       
      
      
      
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