BIOL 1070 Study Guide - Final Guide: German Shepherd, Circadian Rhythm, Haliotis
5 Dec 2011
School
Department
Course
Professor
Document Summary
Thermoregulation in the arctic fox involves: thermoreceptors sending information to the hypothalamus if body temperature is above or below the set point. Plant leaves move in a rhythmic pattern on a 24 hour or circadian rhythm even when placed in darkness. In humans, hormones such as cortisol and melatonin fluctuate over a 24 hour period. Circadian rhythms (circa = around; diem = day) oscillate with a period of approximately 24 hours: acclimitization, adaptation. Abalone (haliotis kamtschatkana) tolerate water temperatures of 4 - 100 c in the winter months, but 8- The enzyme, lactate dehydrogenase is expressed in different forms (isoforms) in the summer relative to the winter. Isoform switching helps to maintain enzyme function regardless of body termperature. Killer whale (orcinus orca) herds form with a distinct age and sex structure. They primarily prey upon endotherms (eg. seals, porpoises, sea lions).
