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Unformatted text preview: 1. Pyrimidines are inhibitors of a separate carbamoyltransferase, the enzyme for the synthesis of pyrimidines. It is an example of: a. negative feedback inhibition b. competitive inhibition c. irreversible inhibition d. activation energy e. catalysis 2. Catabolic reactions involve: a. breakdown of large organic molecules to simple building blocks b. breakdown of life sustaining processes within cells c. building up complex molecules d. anabolic production of complex molecules e. expenditure of energy 3. A reaction with a negative G is referred to as an: a. endergonic reaction b. entropy reaction c. exergonic reaction d. enthalpic reaction e. activation reaction 4. The reaction A+B E requires +8.2 kcal of energy. Which of the following could be coupled to the above reaction: a. D+C F = -7.2 kcal b. X+Y Z = +10 kcal c. M+N O = -15 kcal 5. The reaction ATP + H2O ADP + Pi is classified as an: a. endergonic reaction b. exergonic reaction c. catabolic reaction d. anabolic reaction e. more than one answer is correct f. none of the above is correct 6. Although glucose molecules constantly diffuse into a cell along their concentration gradient, equilibrium is never attained and glucose continues to enter the cell. This is a direct result of: a. very fast glucose turn over...
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- Spring '07