BSC1010L: HOW ENZYMES WORK EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ LATEST
UPDATE
Important to know about enzymes:
- 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 _____.
increase
What is true of an enzyme-catalyzed reaction?
- 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?
- 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.
True
What can affect the rate of a chemical reaction?
, 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?
The enzyme
Why is enzyme concentration not used to measure the rate of the enzyme-
catalyzed reaction?
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.
True
Enzymatic activity can be measured in 2 ways:
1- how much substrate is consumed
2- how much of the product is produced
Catalase activity can be detected by:
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?
ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ LATEST
UPDATE
Important to know about enzymes:
- 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 _____.
increase
What is true of an enzyme-catalyzed reaction?
- 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?
- 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.
True
What can affect the rate of a chemical reaction?
, 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?
The enzyme
Why is enzyme concentration not used to measure the rate of the enzyme-
catalyzed reaction?
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.
True
Enzymatic activity can be measured in 2 ways:
1- how much substrate is consumed
2- how much of the product is produced
Catalase activity can be detected by:
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?
