Healthy Ecosystems I believe
If the heat is applied by open flame, the slow boil-off of alcohol vapor can burn off without exploding or igniting the leaf bath.
Answer: pathway intermediates are prevented from entering alternative metabolic pathways
Explanation: the clustering of enzymes in a metabolic pathway ensures that the product of one enzyme is efficiently transferred to the next enzyme in the pathway. So, the clustering prevents pathway intermediates from being diverted into alternative metabolic pathways.
In biology the three domains are Archaea, the Bacteria, and the Eukarya.