BIOL 1202 Lecture 4: Biology Exam 4 – Notes
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Individuals: deep-sea organisms generally have much lower metabolic rates, populations, have narrow depth range and broad depth range, diurnal vertical migration or orthogenetic vertical migration, pressure, acts on volume changes (of the entire solute-solvent system). In the fall 1969 alvin sank in 1540 m (water temperature 3 c) and was recovered. 11 months later: on board were lunches for pilot and 2 scientists, ex. ) Cell signaling/communication and coordination: cell communication, coordinate metabolic processes, receive messengers from both local and distant sources, the messenger is a chemical signal which diffuse short distances from the source to the cell. Inhibits adenylyl cyclase: golf olfactory g protein, gt transducin, the g protein involved in vision found in retina. Switch proteins : either on or off, activated by occupied (activated) receptor. Integral membrane proteins with 7 alpha helical regions spanning the membrane (heptahelical) Ion channels that control movement of ions across plasma membrane proteins.