MCAT questions with complete solutions

MCAT supercritical fluid - correct answer any substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist the lowest frequency corresponds to the highest/lowest period? - correct answer highest (pay attention to the question, dumb mistake) constructive interference vs destructive interference - correct answer constructive makes it bigger, amplifies. Destructive goes against, flattens the wave. Review R/S Stereochemistry - correct answer ok Order the following from highest to lowest electron affinity NAD+, FAD, O2,CoQ - correct answer O2, CoQ, FAD, NAD+ nonpolar/hydrophobic amino acids are: - correct answer L, A, V, I, W, F, M, P, G (The LAW is that the MVP must eat dry (no water/hydrophobic/nonpolar) FIG(s)) Uncharged/Polar amino acids what are the pKa's of the side groups? - correct answer N, Q, T, S, C, Y (Uhhhhhhh (uncharged), Y(why) is SCN (skinny) QT (cute)? C=8.4 (more acid form) Y=10.5