If an enzymatic reaction was controlled by feedback inhibition, we would expect it to stop

A) only if the substrate was exhausted.
B) when the cofactors are exhausted.
C) when the product changed the pH.
D) as soon as a critical level of end product builds up.
E) only if a metabolic poison is added.

Feedback Inhibition

A regulatory mechanism where the output of a process inhibits its own production by suppressing the process's initial steps.

End Product

The final product resulting from a process, especially in biochemical pathways, where it often regulates the pathway through feedback inhibition.

Metabolic Poison

A substance that disrupts or inhibits metabolic processes, leading to cell damage or death.