BIO 1140 Lecture Notes - Lecture 1: Alexander Oparin, Murchison Meteorite, Archaea
25 Feb 2016
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Lec 1 : intro to cell biology (jan 12) Cork: contains lots of little compartments, called them cellulae = cells. Cell : basic structural and functional unit of life (schwann) Contain highly organized systems of molecules (nucleic acids, dna, rna -carry hereditary information and direct the manufacture of cellular molecules) Use chemical molecules or light as energy source. Respond to changes in their external environment by altering their internal reactions. If cells are broken open : unable to grow, reproduce, or respond to stimuli. Have genetic material (dna - same dna, made up of same four nucleotides, organisation) Basic chem (sugar, lipids), they all use nutrients, need to produce and use energy. Microscopy : technique for producing visible images of objects that are too small to be seen with human eye. Cell is stained with dye to enhance contrast, may kill cell.
