Problem Set 3 S10 KEY

Inhibitors and activators may compete with one

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Unformatted text preview: hibitors and activators may compete with one another. The enzyme usually has a quaternary structure. 4) In this branched metabolic pathway, a red arrow with a minus sign symbolizes inhibition of a metabolic step by an end product: Which reaction would prevail if both Q and S were present in the cell in high concentrations? A) B) C) D) E) LM MO L N OP RS 1 Problem Set 3 Chapters 8-10 BILD1 / Spring 2010 D r. Kiger 5) What is the correct label for "A"? A) B) C) D) E) ATP energy of activation substrate energy enzyme energy uphill Is this reaction Spontaneous? YES NO What general role do enzymes play, and how? Speed reactions ; 6) Which of the following reactions would be endergonic? A) B) C) D) E) 7) HCl H+ + ClC6H12O6 + 6 O2 6 CO2 + 6 H2O ATP ADP + Pi glucose + fructose sucrose all of the above by lowering the EA The binding of an allosteric inhibitor to an enzyme causes the rate of product formation by the enzyme to decrease. Which of the following best explains why this decrease occurs? A) The al...
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