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Phospholipid
Glycerol TWO fatty acid and phosphate
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Amphipathic Region of Phospholipid
- Phosphate region- polar, hydrophillic, head
- Fatty acid chains- nonpolar, hydrophobic, tail
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Steroids
- 4 interconnected rings of C atoms
- not water soluble
- cholesterol
- small change big difference
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Proteins
- structural
- protective
- regulatory
- contractile
- transport
- work like enzymes
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enzymes bind with protein at
active site
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Protein
- CHON and some S
- amino acids
*remember it has NITROGEN!
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amino acids
- 20 of them
- common structure with R group
- side chain determine function
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bond between amino acids
peptide bond!
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Protein shape determined by
intramolecular bonding
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primary structure
amino acids sequence in line
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secondary structure
- B pleated sheets (archordian)
- alpha helices (coils)
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tertiary structure
3D shape
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quaternary structure
TWO or more peptides to make larger protein
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5 factors promoting protein folding and stability
- 1.Hydrogen bonds
- 2.Ionic bonds and other polar interactions
- 3.Hydrophobic effects
- 4.Van der Waals forces
- 5.Disulfide bridges
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shape of protein determines function
can be denatured and changed by PH and temperature
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domain of proteins
each domain has a function
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Nucleic acid
- info storage and passed down from generation to generation
- DNA
- RNA
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Nucleotide
- Monomer
- phosphate, 5 carbon sugar (ribose or deoxyribose), phosphate group
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central dogma
- DNA to RNA (transcription)
- RNA to protein (translation)
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Monomer linked to polymer by
sugar phosphate backbone
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