BSC1010L: How Enzymes Work Review Study Test
Important to know about enzymes: - CORRECT 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 ...
BSC1010L: How Enzymes Work Review
Study Test
Important to know about enzymes: - CORRECT 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 _____. - CORRECT ANSWER increase
What is true of an enzyme-catalyzed reaction? - CORRECT 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? - CORRECT 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. - CORRECT ANSWER True
What can affect the rate of a chemical reaction? - CORRECT 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? -
CORRECT ANSWER The enzyme
, Why is enzyme concentration not used to measure the rate of the enzyme-catalyzed reaction? -
CORRECT 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. - CORRECT ANSWER True
Enzymatic activity can be measured in 2 ways: - CORRECT ANSWER 1- how much substrate is consumed
2- how much of the product is produced
Catalase activity can be detected by: - CORRECT 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? - CORRECT ANSWER How
much oxygen is produced
How much water is produced
How much hydrogen peroxide is used
A chemical reaction is: - CORRECT ANSWER process in which reactants, substrates, undergo a physica;
change that converts them to product.
Metabolism is: - CORRECT ANSWER the sum of all chemical reactions within cells
Enzymes increase the rate of chemical reactions by: - CORRECT ANSWER lowering activation energy
Enzyme characteristics: - CORRECT ANSWER highly specific for the reaction they catalyze; are not used
up in process
The rate of an enzyme-catalyzed reaction is measured by: - CORRECT ANSWER how fast product forms
or how fast substrate is broken down
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