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Biochemistry Test 11/5
IB BOOK Chapter 3 sections 1 & 2 (p. 52 61) SL
(4654) HL
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Topic Breakdown:Water (Properties, structure, importance): 30%
Organic Molecule Structure: 25%
Basic Chemistry (Atomic structure, Bonds, Polar vs nonpolar): 10%
Organic molecule Roles: 25%
Elements in living things 10%
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Water
Temperature added to water 1st breaks the hydrogen bonds. Water absorbs large amounts of heat while not changing its temperature very much. How does this affect living things?
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Ionic vs covalent
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Condensation combines
Hydrolysis separates
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3.2.5
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Importance of Carbon
Carbon skeleton
Carbon bonding
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Additional Water Properties:
Cohesion
Adhesion Solvency
Density
Polarity
Thermal
3.1.5
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GlucoseRibose
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Organic Molecule RolesCarbohydrates: Sugars
energy, storage, structure
Lipids: FatsStorage, signaling
(hormones), insulation
Protein: antibodies, movement, enzymes, storage
Nucleic Acids: stores information (DNA or RNA)
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Sugars
Amino Acids
Lipids Nucleic Acids3.2.2
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Functional Groups
Hydroxyl Group: Alcohols
Carbonyl group: found in Sugars
Carboxyl Group: Acids
Amino Group: Amino acids, proteins
Phosphate Group: ATP
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