Question

16. DNA is a polymer of __________, which consist of a sugar, a phosphate group, and a __________. A. amino acids; nucleotide
B. nucleic acids; nucleotide
C. nucleotides; nitrogenous base
D. nucleotides; nucleic acid E. proteins; nucleotide

Answer 1

Answer:

The answer is nucleotides.DNA is a nucleic acid (desoxirribunocleic acid) polymer composed of units, this is monomers, named nucletoids. Nucleotids are organic molecules with several functional groups ( phosphates, OH, NH2). The monomers bond each other to form a large chain (a polymer) which is the DNA.

Answer 2

DNA is a polymer of nucleotides that consist of a sugar, a phosphate group, and a nitrogenous base, therefore option C.  nucleotides; nitrogenous base.

DNA is a type of nucleic acid. Nucleic acids or DNA are biomolecules made up of the monomers called nucleotides, DNA called hereditary units as it stores transmit, and expresses hereditary information.  

All the genetic information is coded in the sequences of nucleotides. Nucleotide has the following components:  

• Sugar (ribose or deoxyribose sugars) - pentose sugars are present in them.
• Phosphate - with sugar, phosphate makes the backbone and framework of the DNA.
• Nitrogen base - there are four nitrogen bases, two purines; adenine and guanine, and two pyrimidines; Thymine and cytosine.

Thus, DNA is a polymer of nucleotides that consist of a sugar, a phosphate group, and a nitrogenous base, therefore option C.  nucleotides; nitrogenous base.

Learn more about the nitrogenous base:

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