Oils, fats and waxes. Waxes: Composed by long Carbon and Hydrogen chains that are highly hidrophobic. They are saturated. Are found in: hair, insect skeletons, leaves, stems and beehives. FIGURE 3-12b Lipids. Bees build their homes with wax hexagons. . Phospholipids.
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FIGURE 3-12bLipids. Bees build their homes with wax hexagons.
- Are found in cell membranes.
2 fatty acids + glycerol + phosphate group + 1 functional polar group
Columna vertebral de glicerol
Colas de ácido graso
FIGURE 3-15 Phospholipids.
FIGURE 3-17aStructural proteins. Exaples: queratin, found in:
a) hair b) horns c) spider silk.
FIGURE 3-18 Amino acids structure.
FIGURE 3-19aAmino acid diversity.
FIGURE 3-20 Protein synthesis.
The primary structure is the amino acid sequence that forms the protein.
The secondary structure is composed of helix and chains that fold.
The tertiary structure consists in one complex peptidic chain that holds the structure with different links.
The quaternary structure is found where several proteic chains link.
Structure example: hemoglobin.
This folded plate is an example of the secondary proteic structure.
FIGURE 3-23Queratin structure.
FIGURE 3-24 Desoxyrribose nucleotide.
FIGURE 3-25 Nucleotide chain.