Lecture Quesitons Unit 1

Question 1

Cellular macromolecules are polymerized and depolymerized by a general mechanism involving water. Which of the following statements is true regarding these macromolecules?

A. Each polymerization step requires free-energy input and proceeds by the consumption of one water molecule.
B. Each depolymerization step requires free-energy input and proceeds by the consumption of one water molecule.
C. Each polymerization step requires free-energy input and proceeds by the release of one water molecule.
D. Each depolymerization step requires free-energy input and proceeds by the release of one water molecule.

Answer 1

C. Each polymerization step requires free-energy input and proceeds by the release of one water molecule.