1. CompoundsCARBON organic Compounds that contain CARBON are called organic. ...
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Transcript of 1. CompoundsCARBON organic Compounds that contain CARBON are called organic. ...
![Page 1: 1. CompoundsCARBON organic Compounds that contain CARBON are called organic. Macromoleculesorganic molecules Macromolecules are large organic.](https://reader031.fdocuments.net/reader031/viewer/2022020921/56649ea25503460f94ba549e/html5/thumbnails/1.jpg)
Macromolecules
1
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Compounds that contain CARBON are called organic.
Macromolecules are large organic molecules.
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Organic Compounds
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Carbon has 4 electrons in outer shell.
Carbon can form covalent bonds with as many as 4 other atoms (elements).
Usually with C, H, O or N.
Example: CH4(methane)
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Carbon (C)
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Large organic molecules. Also called POLYMERS. Made up of smaller “building blocks” called MONOMERS.
Examples:1. Carbohydrates2. Lipids3. Proteins4. Nucleic acids (DNA and RNA)
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Macromolecules
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Question:How Are Macromolecules Formed?
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Also called “condensation reaction”
Forms polymers by combining monomers by “removing water”.
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Answer: Dehydration Synthesis
HO H
HO HO HH
H2O
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Question: How are Macromolecules separated or digested?
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Separates monomers by “adding water”
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Answer: Hydrolysis
HO HO HH
HO H
H2O
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Carbohydrates
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Small sugar molecules to large sugar molecules.
Examples:A. monosaccharideB. disaccharideC. polysaccharide
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Carbohydrates
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Monosaccharide: one sugar unit
Examples: glucose (C6H12O6)
deoxyriboseriboseFructoseGalactose
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Carbohydrates
glucose
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Disaccharide: two sugar unit
Examples: ◦Sucrose (glucose+fructose)◦Lactose (glucose+galactose)
◦Maltose (glucose+glucose)
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Carbohydrates
glucoseglucose
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Polysaccharide: many sugar units
Examples: starch (bread, potatoes)
glycogen (beef muscle)
cellulose (lettuce, corn)
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Carbohydrates
glucoseglucose
glucoseglucose
glucoseglucose
glucoseglucose
cellulose
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Lipids
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General term for compounds which are not soluble in water.
Lipids are soluble in hydrophobic solvents. Remember: “stores the most energy” Examples: 1. Fats
2. Phospholipids3. Oils4. Waxes5. Steroid hormones6. Triglycerides
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Lipids
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Six functions of lipids:1. Long term energy storage2. Protection against heat loss (insulation)3. Protection against physical shock4. Protection against water loss5. Chemical messengers (hormones)6. Major component of membranes
(phospholipids)
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Lipids
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Triglycerides:composed of 1 glycerol and 3 fatty acids.
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Lipids
H
H-C----O
H-C----O
H-C----O
H
glycerol
O
C-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3
=
fatty acids
O
C-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3
=
O
C-CH2-CH2-CH2-CH =CH-CH2 -CH
2 -CH2 -CH
2 -CH3
=
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There are two kinds of fatty acids you may see these on food labels:
1. Saturated fatty acids: no double bonds (bad)
2. Unsaturated fatty acids: double bonds (good)
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Fatty Acids
O
C-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3
=
saturated
O
C-CH2-CH2-CH2-CH=CH-CH2 -CH
2-CH2 -CH
2 -CH3
=
unsaturated
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Proteins
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Amino acids (20 different kinds of aa) bonded together by peptide bonds (polypeptides).
Six functions of proteins:1. Storage: albumin (egg white)2. Transport: hemoglobin3. Regulatory: hormones4. Movement: muscles5. Structural: membranes, hair, nails6. Enzymes: cellular reactions
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Proteins (Polypeptides)
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Four levels of protein structure:A. Primary StructureB. Secondary Structure C. Tertiary Structure D. Quaternary Structure
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Proteins (Polypeptides)
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Amino acids bonded together by peptide bonds (straight chains)
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Primary Structure
aa1 aa2 aa3 aa4 aa5 aa6
Peptide Bonds
Amino Acids (aa)
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3-dimensional folding arrangement of a primary structure into coils and pleats held together by hydrogen bonds.
Two examples:
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Secondary Structure
Alpha Helix
Beta Pleated Sheet
Hydrogen Bonds
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Secondary structures bent and folded into a more complex 3-D arrangement of linked polypeptides
Bonds: H-bonds, ionic, disulfide bridges (S-S)
Call a “subunit”.
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Tertiary Structure
Alpha Helix
Beta Pleated Sheet
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Composed of 2 or more “subunits” Globular in shape Form in Aqueous environments Example: enzymes (hemoglobin)
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Quaternary Structure
subunits
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Nucleic Acids
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Two types:a. Deoxyribonucleic acid
(DNA- double helix) b. Ribonucleic acid (RNA-single strand)
Nucleic acids are composed of long chains of nucleotides linked by dehydration synthesis.
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Nucleic acids
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Nucleotides include:phosphate grouppentose sugar (5-carbon)nitrogenous bases:
adenine (A)thymine (T) DNA onlyuracil (U) RNA onlycytosine (C)guanine (G)
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Nucleic acids
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Nucleotide
OO=P-O O
Phosphate Group
NNitrogenous base (A, G, C, or T)
CH2
O
C1C4
C3 C2
5
Sugar(deoxyribose)
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DNA - double helix
P
P
P
O
O
O
1
23
4
5
5
3
3
5
P
P
PO
O
O
1
2 3
4
5
5
3
5
3
G C
T A
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