Lipids and Nucleic Acids
Honors Biology
Monkemeier
2015
Lipids
• Nonpolar, do not dissolve in water,
hydrophobic, insoluble
• Diverse Group of Molecules
• Act as energy storage, structure, signals,
waterproofing.
Fatty Acids
Saturated vs. Unsaturated
Triglyceride
Phospholipids
Phospholipids
Steroids
Waxes and Oils
• Waxes are solids at room temperature
• Oils are liquids at room temperature. Oils
are described as polyunsaturated – they
have double bonds between the carbons.
Nucleic Acids
• Central Dogma: Information flows from DNA to
RNA to proteins.
• DNA encodes the information to make proteins
within the sequence of its nucleotides.
• GENES are areas on the DNA molecule that code
for specific proteins (polypeptide chains)
DNA and RNA
• Composed of Nucleotides
Nitrogenous bases
Deoxyribose vs. Ribose
DNA and Proteins - Evolution
• Comparison of sequences
• Nearest common ancestor