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    Biochemistry multiple choice, enzymes

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    9. Which of the following is true?
    a. Enzymes force reactions to proceed in only one direction
    b. Enzymes alter the equilibrium of the reaction
    c. Enzymes alter the standard free energy of the reaction.
    d. All of the above.
    e. None of the above

    10. Which of the following is NOT a way in which enzymes stabilize a transition state?
    a. causing the temperature of the environment to increase
    b. covalent catalysis
    c. using binding energy
    d. general acid-base catalysis
    e. catalysis by approximation

    11. How is trypsin activity turned off?
    a. by dephosphorylation
    b. by binding an inhibitor protein
    c. by a second cleavage
    d. All of the above.
    e. None of the above.

    12. To which amino acid residues in glycoproteins are the sugars commonly linked?
    a. tyrosine and asparagine
    b. serine, threonine, and asparagine
    c. serine, tyrosine, and asparagine
    d. serine and threonine
    e. a and d.

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    Solution Preview

    9) E, though since enzyme lower the activation energy, in a practical sense they CAN force the reaction ...

    Solution Summary

    In this solution set several multiple choice questions on enzymes are considered. The correct answer is given, and an explanation is included with each.