BIOL 111 Study Guide - Midterm Guide: Electronegativity, Surface Tension
Document Summary
Proteins if they have many polar of charged sites on their surface. Does not dissolve non-polar solutes (they are hydrophobic) (same electronegativity. Which is more water soluble? (different electronegativity: c6h12o6 (glucose, c2h6 (ethane, o2 (oxygen) Acid- # of hydrogen ions go up. Base- reduce the number of hydrogen ions ph scale. Low ph, highly acidic, high ph highly basic. Every time we move up and down the scale by one represents a 10 fold increase or decrease. Which solution is most acidic: ph 3 ; lower on the scale, ph 5, ph 7, ph 12. The ph scale is logarithmic, so a difference of 3, ph units is a difference of 10^3=1,000 . The lower the ph the more acidic: has 1/1000 times the h+ concentration. Buffers: dissolved chemical species in water that help to resist changes to the ph , soak up extra h+ ions, cells use to keep ph values in certain range.
