IMED1001 Lecture Notes - Lecture 1: Organism, Extracellular Fluid, Schwann Cell

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Power generation (if oxygen is available, then can use oxidative metabolism to burn fuels) Information sources (manufacturing of proteins & nucleic acids, anaerobic/aerobic metabolism) Transport and traffic (moving things within cells, between cells, and moving things out of cells) Safety, security and defence (safety measures against invaders) Recycling (removal of waste internal structure of cells that carry out specialised metabolic tasks. Non-membranous: ribosomes, centrioles (transport of chromosomes in cytokinesis, flagella (movement- to propel the cell forward) Made up of a phospholipid bilayer (has a water soluble component and a lipid soluble component)- both are amphipathic. When added to water, the hydrophobic tails attach to the other tails, hence form a bilayer in which the heads surround the tails due to the fact that h-bonds are formed between the tails and water molecules. If we want something active in blood/cells, then the object must be hydrophilic. Most have one nucleus: some are anucleur (rbc) and some are multinucleate (skeletal muscle)

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