BIOL 1105 Lecture Notes - Lecture 4: Elastin, Proteoglycan, Fibronectin
3 Oct 2016
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Organelles: discrete internal macromolecular structures specialized for a particular function. Human eye can image an object about as small as 200 micrometers o o. Small viruses, macromolecules, generally can"t view living cells. Smaller than eukaryotes: unicellular lack internal compartments, have cell wall, may have capsule, pili, flagella-transportation, archaea in extreme environments. Common features of prokaryotes and eukaryotes: dna is genetic material o o. Plasma membrane separates the cell interior (cytoplasm) from the extracellular environment: metabolic pathways (glycolysis, respiration, photosynthesis) o. Large rna protein complexes that act as protein synthesis machines by converting nucleotide sequence info into amino acid sequence info. Lysosomes-don"t know if they exist in plant cells. Cytoplasm is all of the cell material enclosed by plasma membrane. Cytosol is specific part of cytoplasm (the fluid) Includes all the cell materials enclosed by the plasma membrane but outside organelle membrane. Organelle membranes separates the inside of the organelle (lumen) from the cytosol.
