LIFESCI 2 Chapter 8: Chapter8EnergyEnzymesandMetabolism
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G, e xe rgonic = forms /re le a s e s atp . = s ponta ne ou s the enzyme that catalyzes it (luciferase) occur in a wide variety of organisms. A catalyst does not cause a reaction to occur that would not proceed without it, but merely increases the rate of the reaction, allowing equilibrium to be approached more rapidly. e nde rgonic us e s e ne rgy from atp hydrolys is. A coenzyme is like a substrate in that it does not permanently bind to the enzyme: it binds to the active site, changes chemically during the reaction, and then separates from the enzyme to participate in other reactions. atp and adp have been described as coenzymes, even though they are really substrates that gain or lose phosphate groups during chemical reactions. will encounter coenzymes that function in energy harvesting reactions by accepting or donating electrons or hydrogens.
