Biology

2. The sum of all chemical reactions happening in a cell
3. Anabolic reactions build larger molecules from smaller ones, using a net input of energy (endergonic)
6. A reaction that absorbs free energy from the surroundings
9. A reaction that has a net release of free energy
11. Catabolic reactions break down larger molecules into smaller ones with a net release of energy (exergonic)
12. New substances formed from a result of that reaction

1. energy Minimum energy required to bring reactants together and start chemical reactions
4. fit A flexible active site that changes shape to the substrate as they bond together
5. Reduce or stops the enzymes from functioning
7. Organic cofactors
8. Starting substances in a chemical reaction that undergo change
10. and key The active sites as having a set shape. The substrate molecules fit perfectly into active site, like a key in a lock. Once in the active site, the chemical reactions can take place.