Entering a Car Radio Code. The exact process for entering a car radio code varies from one situation to another. In most cases, youâll use the volume or tuner knobs or buttons to select numbers, and then click the knob or push another button to advance.
DNA Polymerase. The enzyme that catalyzes DNA replication is DNA Polymerase. Don't confuse this with any other enzyme (meaning RNA polymerase-DNA polymerase is used to replicate DNA when the cell is undergoing mitosis or meiosis, RNA polymerase catalyzes transcription).
Key Concepts. Enzymes catalyze reactions by lowering the activation energy necessary for a reaction to occur. The molecule that an enzyme acts on is called the substrate. In an enzyme-mediated reaction, substrate molecules are changed, and product is formed.The enzyme molecule is unchanged after the reaction, and it can continue to catalyze the same type of reaction over and over.nzymes catalyze reactions by lowering the activation energy necessary for a reaction to occur. The molecule that an enzyme acts on is called the substrate.