BIOL 23000 Lecture Notes - Lecture 3: Polio Vaccine, Biorefinery, Hela
27 Nov 2017
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Key steps in transforming lignocellulosic materials to ethanol reach cellulose quicker) Pretreatment: effects prior to enzyme hydrolysis (breaks structure down for enzyme to. (1) biomass harvested and delivered to biorefinery. (2) biomass cut into shreds and pretreated to make cellulose accessible to enzymes. (3) enzymes break down cellulose chains into sugar. (5) ethanol purified through distillation and prepared for distribution. George and margaret gay (1951) received tissue sample from cervical tumor. Cells cultured and distributed to other scientists. Her cells: abnormal expression in gene code for telomerase (enzyme all telomeres to be synthesized anew with each round of cell division) Played key role in development of polio vaccine. Dna sequence of hela cells developed in 2013. Electrons are not equally shared between 2 atoms. If more than 1 electron pair is shared, double or triple bonds form. Formed between h and n, o, p. Van der waals asymmetries around atoms from electron movement.
