Nucleic Acids

• Phosphodiester bond - covalent bond holding nucleotides together, linking the sugar group of one nucleotide to the phosphate group of another nucleotide 

E. Coli - a type of bacteria found in parts of healthy digestive tracts 

• Have a gene called eae that makes them pathogenic 

• Have different nitrogenous bases 

• Complimentary base pairing - 

• Antiparallel- 

• Nirogenous bases - held by hydrogen bonds 

• some viruses use RNA while most use DNA to store gene material

DNA

• Deoxyribose- 5-carbon sugar used in DNA 

• DNA - double-stranded

• DNA - uses T (thymine) 

• Secondary structure - double helix

 RNA 

• Ribose - 5-carbon sugar used in DNA 

• RNA- Single-stranded 

• Rna- uses U (uracil) 

• Same percentage of 

• A always bonds to t 

• G always bonds to C