Review For Biochemistry Final

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Calculate the pH at the end of an enzyme-catalyzed reaction if it were carried out in a 0.1 M phosphate buffer, pH 6.86 and 0.005 M of acid was produced during the reaction? Relevant pKa= 6.86 and log 11 =1.04

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Which atoms, or groups attached to them, face into the minor groove of B-form DNA?

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The reduction of pyruvate to lactate has an E°ʹ′of -0.185 V while the reduction of acetaldehyde to ethanol has an E°ʹ′ of - 0.195 V. If these two reactions are coupled to produce a spontaneous reaction involving 2 e- transfer, which of the following would be the reducing agent and calculate ΔG°ʹ′ for the coupled reaction (F is 96.5 kJ/V.mol)?

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Which of the following properly ranks the non-covalent interactions in the increasing order of their dependence of energy on distance ?

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Which of the following statements is not true about hydrophobic interactions?

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All are distinctive properties of living systems EXCEPT:

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Which the following sequences of DNA is most likely to form Z-DNA, at least in vitro?

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1. What is the pH of a threonine solution in which the α-NH3+ group (pKa is precisely 10.4) is one-third dissociated?

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Please study the peptide below carefully and answer the subsequent questions:

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pKa value of N terminal is (use 2 sig figs)

pKa value of C terminal is (use 2 sig figs)

The first amino acid from left is (3 letter abbrev.)

and pKa value of its R group is

The second amino acid from left is

and pKa value of its R group is

The third amino acid from left is

and pKa value of its R group is

At pH 5.2, the charge on carboxy terminal, R group of third from left amino acid and N terminal is +/- #, +/#, +/- #

At pH 5.2, the charge on first from left amino acid R group is ( +/- 0.__)

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Which of the following statements are/is False:

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