energetics and enzymes Flashcards
coenzymes: define the term “coenzyme”, and explain the role of the coenzyme NAD in reactions catalysed by dehydrogenases
1
Q
define coenzyme
A
a non-protein compound that is necessary for the functioning of an enzyme; only function after binding to protein
2
Q
what reaction does lactate dehydrogenase catalyse
A
pyruvate ⇌ lactate; oxidation of lactate to pyruvate by reducing NAD+
3
Q
what is the coenzyme used in lactate dehdyrogenase; give the reaction
A
NAD+: NADH ⇌ NAD+ + H+ + 2e-
4
Q
where does lactate go
A
liver, where high levels of NAD+ convert it back to pyruvate
