1. Figure: UN
Title:
Purine, pyrimidine, adenine, guanine, cytosine, uracil, and thymine.
Caption:
The bases in RNA are adenine, guanine, cytosine, and uracil. The bases in DNA are adenine, guanine, cytosine, and thymine.

2. Figure: UN
Title:
Adenosine 5'-monophosphate (a ribonucleotide) and 2'-deoxycytidine 3'-monophosphate (a deoxyribonucleotide).
Caption:
A ribonucleotide contains b-D-ribofuranose, a nitrogen-containing base (adenine, guanine, cytosine, or uracil), and phosphate. A deoxyribonucleoside contains b-2-deoxyribofuranose, a nitrogen-containing base (adenine, guanine, cytosine, or thymine), and phosphate.

3. Figure: UN
Title:
Adenosine 5'-monophosphate (AMP), adenosine 5'-diphosphate (ADP), adenosine 5'-triphosphate (ATP), 2'-deoxyadenosine 5'-monophosphate (dAMP), 2'-deoxyadenosine 5'-diphosphate (dADP), and 2'-deoxyadenosine 5'-triphosphate (dATP).
Caption:
Nucleotides can exist as monophosphates, diphosphates, and triphosphates.

4. Figure: 27.3
Title:
Figure Complementary base pairing in DNA.
Caption:
Adenine (a purine) always pairs with thymine (a pyrimidine); guanine (a purine) always pairs with cytosine (a pyrimidine). Therefore,[A] = [T] and [G] = [C].

5. Figure: 27.4
Title:
Figure The sugar-phosphate backbone of DNA is on the outside, and the bases are on the inside.
Caption:
Adenine is pairing with a thymine. Guanine is pairing with a cytosine.

6. Figure: 27.5
Title:
Figure Base pairing in DNA.
Caption:
Adenine and thymine link together forming two hydrogen bonds. Cytosine and guanine link together forming three hydrogen bonds.

7. Figure: 27.6
Title:
Figure (a) The DNA double helix. (b) View looking down the long axis of the helix. (c) The bases are planar and parallel on the inside of the helix.
Caption:
(a) The DNA strands are not linear but are twisted into a helix around a common axis. (b) and (c) The base pairs are planar and parallel to each other on the inside of the helix.

8. Figure: 27.8
Title:
Figure Replication of DNA.
Caption:
The daughter strand on the left is synthesized continuously in the 5' —> 3' direction; the daughter strand on the right is synthesized discontinuously in the 5' —> 3' direction.

9. Figure: 27.9
Title:
Figure Transcription.
Caption:
DNA is used as a blueprint for the synthesis of RNA.

10. Figure: 27.10
Title:
Figure (a) Structure of the transfer RNA molecule that carries alanine. (b) Structure of the transfer RNA molecule that carries phenylalanine.
Caption:
(a) tRNA contains a high percentage of unusual bases, shown as empty circles. (b) The anticodon is green and the CCA at the 3'-end is red.

11. Figure: 27.2
Title:
Table The genetic code.
Caption:
Each amino acid that is to be incorporated into a protein is specified by one or more three-base sequences called codons. The bases are read consecutively. The three-base sequences and the amino acid each sequence codes known as the genetic code.

12. Figure: 27.13
Title:
Figure Translation.
Caption:
The sequence of bases in mRNA determines the sequence of amino acids in a protein.

13. Figure: 27.14
Title:
Figure Transcription and translation.
Caption:
Protein synthesis occurs on the ribosomes. The smaller of the two subunits in the ribosome has three binding sites for RNA molecules. It binds the mRNA whose base sequence is to be read, the tRNA carrying the growing peptide chain, and the tRNA carrying the next amino acid to be incorporated into the protein.

14. Figure: UN
Title:
Using H-phosphonate monomers in synthesizing oligonucleotides, II.
Caption:
Oxidation with iodine converts the H-phosphonate groups to phosphate groups.