BIOL BC 1502y Lecture Notes - Lecture 2: Cell Membrane, Endosymbiont, Cell Wall
25 Aug 2016
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Biol bc1502 intro to molecular and cell biology. Chromoplasts pigment storage organelle (found in fruits: central vacuole. Used to support the cell: cell wall. Highly tough, extracellular structure made of cellulose (macromolecule) Plasmodesmata channels that cross cell walls to allow communication. Base cell of eukaryotes was derived from an archaean cell: this is known because of the similarities between eukaryotic and archaean genomes. As the size of the archaean species increase, plasma membrane invaginations help overcome the surface area to volume ratio. Acquisition of bacteria by feeding or invasion to become the metabolic organelles. Antagonistic relationship between the cell and bacteria: inside-out theory. Symbiotic relationship between the archaean species and the bacteria. Basic chemistry (understand how a cell"s constituents work) Mostly made of small molecules (e. g. sucrose) or large molecules (e. g. Mostly made of small molecules (e. g. sucrose) or large molecules (e. g. dna: elements pure substances that cannot be broken down into singular substances by normal physical and chemical techniques.
