Question

sugar (deoxyribose or ribose), a phosphate, and a nitrogenous base (adenine, thymine, guanine, cytosine, or uracil)

1. what is the monomer of a nucleic acid?

a. diagram the monomer of a nucleic acid and label the structur

1. identify the five nitrogenous bases.
2. describe the difference between a purine and pyrimidine.

a. identify which nitrogenous bases are purines.
b. identify which nitrogenous bases are pyrimidines.
information storage and transmission:
living systems store, retrieve, transmit, and respond to information essent
1.6.a: describe the structure and function of dna and rn
1.6.a.2:nucleic acids have a linear sequence of nucleotides that have ends, defined by the 3 (three prime) hydroxyl and 5 (five prime) phosphates of the sugar in the nucleotide. during nucleic acid synthesis, nucleotides are added to the 3 end of the growing strand, resulting in the formation of covalent bonds between nucleotides.
exclusion statement:
the molecular structure of specific nucleotides is beyond the scope of the ap exam.

1. describe the structure of the nucleic acid polymer.
2. what are the ends called and what functional group is found at each en
3. describe the directionality of a nucleic acid.

a. which end is the location of the growing nucleic acid strand?
information storage and transmission:
living systems store, retrieve, transmit, and respond to information essentia
1.6.a: describe the structure and function of dna and rn
1.6.a.3:dna is structured as an antiparallel double helix, with two strands of nucleotides running in opposite 5 to 3 orientation. in dna, adenine nucleotides pair with thymine nucleotides via hydrogen bonds (a - t), and cytosine nucleotides pair with guanine nucleotides via

Explanation:

1. The monomer of a nucleic acid is a nucleotide, which consists of a sugar (deoxyribose in DNA or ribose in RNA), a phosphate group, and a nitrogen - containing base.
2. The five nitrogenous bases are adenine, thymine, guanine, cytosine, and uracil (uracil is in RNA instead of thymine).
3. Purines have a double - ring structure, and the purine nitrogenous bases are adenine and guanine. Pyrimidines have a single - ring structure, and the pyrimidine nitrogenous bases are thymine, cytosine, and uracil.
4. Nucleic acid polymers are chains of nucleotides linked by phosphodiester bonds.
5. The ends of a nucleic acid are called the 5' (five - prime) end and the 3' (three - prime) end. The 5' end has a phosphate group, and the 3' end has a hydroxyl group.
6. Nucleic acids have a directionality from the 5' end to the 3' end. The growing nucleic acid strand is added to the 3' end. In DNA, it is an antiparallel double - helix with two strands running in opposite 5' to 3' orientations, and base - pairing occurs (A - T and C - G via hydrogen bonds).

Answer:

1. Nucleotide
2. Adenine, Thymine, Guanine, Cytosine, Uracil
3. a. Adenine, Guanine

b. Thymine, Cytosine, Uracil

1. Chains of nucleotides linked by phosphodiester bonds
2. Called 5' and 3' ends. 5' end has phosphate group, 3' end has hydroxyl group
3. Directionality is 5' to 3'. The 3' end is the location of the growing strand.