BIOL 116 Chapter Notes - Chapter 3.1-3.4, 6.3-6.4: Membrane Transport, Protein Structure, Lightning
4 Dec 2016
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Chapter 3. 1-3. 4 & 6. 3-6. 4 (learning outcomes) (1) describe stanley miller"s landmark experiments and why his results were so important at the time. He created a microcosm of ancient earth: had a large flask containing gases with high free energy (h2 hydrogen, ch4. Amino acids: what makes up proteins (building blocks), 20 overall. Can be nonionized (r group varies b/w a. a = differing properties) or ionizes (a. a ionize in h2o with ph 7 = more reactive) Amino group (nh2): attracted to h+ (proton) and acts as a base. Carboxyl group (cooh): has increasing electronegativity -> takes electrons from h atom -> loses h+, acts as an acid. Figure 3. 2 all amino acids have the same general structure (3) list the three kinds of amino acids, based on r groups, and how they behave differently in biological systems. Non-polar: no charged atoms, or electrons, to form h2 bonds, not soluble in h2o. Polar: partial charges to form h2 bonds, soluble in h2o.
