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practice exam 1-2007-key

practice exam 1-2007-key - Practice Exam...

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Practice Exam Questions-BISC320-Fall 2004 1) When two atoms differing in electronegativity are joined in a covalent bond, then: a) the electrons are shared equally between the atoms b) the bond is nonpolar c) the atom with the greater electronegativity attracts the bonded electrons more d) a double bond is formed 2) At chemical equilibrium: 3) Why is the melting temperature (Tm, or denaturation temperature) for a double stranded DNA sequence of 40 base-pairs with 60% G:C content greater than for a double stranded DNA sequence of 40 base-pairs with 50% G:C content? 4) Restriction enzymes:
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