Ile exam stuvia - Study guides, Class notes & Summaries

ILE Exam Hearing Aids Hand Cupped Behind Ear - ANSWER -first Hearing Aid -increased sound by 5-8db -included horns,trumpets, speaking tubes 1892 - ANSWER -carbon amplifiers patent by Alexander Bell -marketed 1902-1903 until 1930;first patent for a telephone type hearing instrument 1920 - ANSWER large vacuum tubes; not portable 1938 - ANSWER miniature vacuum tube ;crystal receivers 1930 - ANSWER diameter reduced

Bioc 2580 Midterm Exam Study Guide Solutions very non-polar side chains - ANSWER-ala, val, leu, ile, met, phe - side chains are dominated by non-polar and hydrophobic hydrocarbons moderately non-polar - ANSWER-gly, cys, pro, tyr, trp -gly: single H, not enough to be very non-polar -cys: slightly polar SH -pro: side chain links to N and alpha C, polar non moderates non-polar hydrocarbon -tyr & trp: single polar group that partly offsets very non-polar benzene polar uncharged - ANSWER-ser...