BIOL 102 Lecture Notes - Lecture 12: Anaerobic Respiration, Bohr Effect, Myoglobin
Document Summary
Plasma carries small percentage of o2 mostly water. Fetal hb takes o2 from mother greater affinity for o2. O2 saturation curve of hb shifts to right as ph decreases. Release of metabolic acids (lactic acid) in tissue decrease in ph o2 unloaded from hb. More acidic reduces hemoglobin affinity of o2. Anaerobic respiration lactic acid o2 moves from blood to tissues. Higher affinity for o2 than hemoglobin downloads and retains o2. Reserve of o2 for muscles when little o2 is available from blood. Left of curve (not s-shaped) single polypeptide chain no + cooperativity: describe. Fick"s law of diffusion: shows how various physical factors influence the diffusion rate of gases. Adaptations maximize respiratory gas exchange influence one or more variables of fick"s law. O2 content of air is much higher than water. O2 diffuses ~ 8000 times more rapidly in air than in water.
