BIOL3030 Lecture Notes - Lecture 25: Deep Sea, Nitrogen Narcosis, Osmolyte
4 Apr 2017
School
Department
Course
Professor
Document Summary
Filters out bubbles that emerge out of solution. Stored in different places in different mammals. Most oxygen of human is stored in blood. Not in lungs because they are being depressed. Total amount of o2 stored on per kg basis. Can store a lot: very efficient storage. Greater capacity to store on per kg basis. Heart rate decreases with deeper depth/dive duration. Remaining at depth leads to biomass/energy/light issues. Get rid of gas bladder: no air filled spaces. Physiological stress due to high hydrostatic pressures. Pressure stresses weaken bonds and 3d structure. Compression of cell membrane reduced molecular mobility. Buttresses shape of important proteins and membranes. Hypothesis that fishes can only exist so deep. Need to produce so much tmao that osmotic balance would be too disrupted. Most biomass is where there is light. If light penetrates water quickly, everything is absorbed except blue and green. Bioluminescence: produces light at certain quantity and quality.
