which of the following best describes a typical metabolic pathway? i. a series of enzyme-catalyzed steps, most of which are operating near equilibrium, but one or more is highly favorable and irreversible ii. a series of enzyme-catalyzed steps, all of which are highly favorable, and irreversible. iii. all of the other options. iv. a series of enzyme-catalyzed steps, most of which are highly favorable, but one or more is near equilibrium. v. a series of enzyme-catalyzed steps, all of which are operating near equilibrium.
