BIOL 4800

Background An enzyme is a protein molecule that acts as a catalyst to increase the rate of a reaction. A catalyst is a chemical that speeds up a chemical reaction but is not used up in the reaction. Enzymes work by fitting with a specific substrate ( reactant molecule ). When the substrate binds to the active site it’s bonds become less stable and therefore are more likely to be altered and form new bonds. Many factors can affect the rate of enzyme action such as the temperature, the pH ...

HIGH ACUITY – FINAL EXAM – HTD DYSRHYTHMIA INTERPRETATION / NURSING MANAGEMENT conduction system steps to follow when interpreting an ECG (8) • repolarization = relax • depolarization = squeeze • HR = 75 (300/4) = 300 for big, 1500 for small • R-R interval is 0.80 sec • P wave is a smooth rounded upward deflection • PR interval is 0.16 sec • each P wave is followed by a QRS complex • QRS complex is 0.06 sec • QT interval 0.36 sec • normal sinus rhythm normal values • SA...