BIO SCI 97- Midterm Exam Guide - Comprehensive Notes for the exam ( 52 pages long!)

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You can tell the directionality by looking at the free phosphorus of hydroxyl group. The difference between dna and rna is that. B/c of hydrogen bonds that bond between the base pairs. A = t (2 h-bonds) and g c (3 h-bonds) A = t base pairs are less stable than g c (cid:915)(cid:914)(cid:932)e p(cid:914)i(cid:931)(cid:932) (cid:915)/(cid:916) a = t have less h-bonds. Not a self-assembly process since the base pairs require enzymes. Crick found that dna was a double helix. Watson was the one that found the h-bonds between nucleotide base-pairs. The 2 strands split open, then is copied. The first cycle: each new dna is made up of 1 parent strand, 1 daughter strand. Nucleotides being added into a chain is called polymerization. Phosphodiester bond is between the sugar phosphate backbone of each nucleotide. Triphosphate (atp) attacks the oh and the o- bonds to the oh forms. Hydrolysis (formation of h2o) is a spontaneous reaction.

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