PRIN OF BIOLOGY I
PRIN OF BIOLOGY I BIO 150
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This 4 page Class Notes was uploaded by Retta Mayert on Friday October 23, 2015. The Class Notes belongs to BIO 150 at University of Kentucky taught by Ruth Beattie in Fall. Since its upload, it has received 15 views. For similar materials see /class/228195/bio-150-university-of-kentucky in Biology at University of Kentucky.
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Date Created: 10/23/15
BIO 150 Lecture 4 1272010 92200 PM Chemistry Structurefunction how is the structure of a molecule related to its function True statement about atomic structure Protons and neutrons have the same mass Functional groups course packet pg 10 A chemical group with known predictable properties Methyl electrons are being shared equally nonpolar water insoluble a carbon with 3 hydrogens surrounding it Hydroxyl OH unequal sharing of electrons polar water soluble Carboxyl unequal sharing of electrons polar acidic a carbon with a 0 and a 0H attached Carbonyl a carbon with a 0 and a H attached or some other R group Phosphate very polar acidic a OP bond with a 0 and 2 OH attached to the P o Phosphate groups energize and make something acidic and reactive Amino polar basic properties a N with 2 H s attached Sulfhydryl a 5H bond 2 of these can form a disulfide bridge this gives proteins structure Bond types Ionic Covalent Hydrogen Hydrophobic The single most outstanding property of water is its ability to form hydrogen bonds Properties Highly poplar High specific heat High heat of vaporization Lower density of ice Cohesion and adhesion The difference in the hydrogen ion concentration between two pH values is a factor of ten pH 70 10397 pH 80 10398 pH 60 10396 The functioning of molecules within living cells is affected by even slight changes in the molecular concentrations of hydrogen ion and hydroxide ions Carbon dioxide dissolves in H20 to form carbonate and bicarbonate ions H2CO3 9H HCO3 pH 74 at equilibrium If the pH is reduced to 65 the H concentration must be reduced to go back to 74 If the pH is raised to 84 the H concentration must be increase to go back to 74 Types of biomolecules o Carbohydrates o Proteins Lipids o Nucleic acids 1272010 92200 PM 1272010 92200 PM
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