PDF chapter test TRY NOW

Label the parts of the DNA in the diagram given below. Explain the structure briefly.
 
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a. How many polynucleotide chains makeup one DNA molecule? .
 
b. The backbone of DNA is formed by .
 
c. Nitrogenous bases are .
 
d. The nitrogenous bases are joined together by  bonds.
 
e. Thymine is linked to Adenine via  hydrogen bonds.
 
f. Guanine is linked to cytosine by  hydrogen bonds.