BSC1010L: How Enzymes Work

BSC1010L: How Enzymes Work Important to know about enzymes: - Answer- - essential for chemical reactions - never used up - activity is influences by a number of factors An enzyme reduces the energy necessary to start a chemical reaction. This means that the rate of the reaction will _____. - Answer- increase What is true of an enzyme-catalyzed reaction? - Answer- - an enzyme reduces the activation energy - an enzyme speeds up the conversion of substrate to product - enzymes are not used up in the chemical reaction Which are method(s) to measure the activity of an enzyme? - Answer- - measuring how much product is made - measuring how much substrate is used The amount of enzyme does not change. Therefore enzymes can be re-used and convert more substrate to product. - Answer- True What can affect the rate of a chemical reaction? - Answer- How much enzyme is available The pH in which the enzyme is active The temperature of the reaction How much substrate is available Which substance in a chemical reaction will not change in concentration as the reaction proceeds? - Answer- The enzyme Why is enzyme concentration not used to measure the rate of the enzyme-catalyzed reaction? - Answer- The concentration of an enzyme does not change An enzyme is not used in a chemical reaction True or False. Different types of enzyme may differ in optimal tempt and pH requirements, depending on where and how they function. - Answer- True Enzymatic activity can be measured in 2 ways: - Answer- 1- how much substrate is consumed 2- how much of the product is produced Catalase activity can be detected by: - Answer- observing formation of oxygen bubbles Hydrogen peroxide is broken down to produce water and oxygen with the help of an enzyme catalase. Which of the following can be measured to determine the enzymatic activity? - Answer- How much oxygen is produced How much water is produced