Enzymes — Flashcards

_____ activates factor XII, which initiates the intrinsic pathway of the coagulation cascade

Dopamine in the CNS may be degraded to _____ via the enzyme catechol-O-methyltransferase (COMT)

Pepsinogen (inactive) is converted into _____ (active) in the presence of H+

Activation energy of an enzyme is free energy difference between the _____ & transition State.

In the _____ cells of the ovary, testosterone is converted to 17-estradiol via the enzyme aromatase

Acetaldehyde may be converted to _____ via the enzyme acetaldehyde dehydrogenase

In cells containing mineralocorticoid receptors, _____ may be converted to cortisone by the enzyme 11-hydroxysteroid dehydrogenase

Leydig cells do not contain the steroid hormone enzymes _____ or 11-hydroxylase and, therefore, cannot synthesize glucocorticoids or mineralocorticoids

_____ is an obligate activator of pyruvate carboxylase

The rate of a reaction depends on the concentration of both the _____ and the substrate