Thhs Bio- Enzyme Quiz
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- 1.Since light can speed up the rate at which hydrogen peroxide is broken down into water and oxygen, peroxide is kept in an opaque bottle. Light is therefore a catalyst. However, light is not an enzyme.
- A.
True
- B.
False
- 2.
![The enzyme and substrate in the Lock and Key Model depicted below
- ProProfs]( "The enzyme and substrate in the Lock and Key Model depicted below")
The enzyme and substrate in the Lock and Key Model depicted below- A.
Have a specific shape related to their interaction with each other
- B.
Have a shape that can change slightly
- C.
Meet up at the enzyme substrate corner
- D.
Are not affected by denaturation of the enzyme
- 3.Check all of the choices below that are enzymes:
- A.
Lipase
- B.
Salivary amylase
- C.
Pepsin
- D.
Trypsin
- E.
Lactase
- F.
Luciferose
- G.
Ribosome
- 4.Adding an acidic solution like orange juice to a bowl of cut-up apples will slow down the browning of the apples because
- A.
The acidic solution contains hydrochloric acid which kills bacteria
- B.
The acidic solution protects the apple
- C.
The acidic solution denatures the enzyme which causes the apple to brown
- D.
Choices A. and B.
- 5.A basic solution has a pH between 8-14. Since the pH of bleach is 13, it is considered a basic solution.
- A.
True
- B.
False
- 6.
![An appropriate caption for this figure would be
- ProProfs]( "An appropriate caption for this figure would be")
An appropriate caption for this figure would be- A.
How Enzymes Work: The Lock and Key Model
- B.
The Role of Temperature on Enzyme Action
- C.
The Role of pH on Enzyme Action
- D.
How Enzymes Function: The Induced Fit Model
- 7.
![The product shown below is a lactase substitute. Someone may take pills or a formula containing lactase if they
- ProProfs]( "The product shown below is a lactase substitute. Someone may take pills or a formula containing lactase if they")
The product shown below is a lactase substitute. Someone may take pills or a formula containing lactase if they- A.
Do not have the lactase gene
- B.
Have a mutated lactase gene
- C.
Produce lactase that has a distorted shape
- D.
All of the above
- 8.
![In the graph shown below, increasing the substrate concentration does not increase the rate of reaction at a certain point because
- ProProfs]( "In the graph shown below, increasing the substrate concentration does not increase the rate of reaction at a certain point because")
In the graph shown below, increasing the substrate concentration does not increase the rate of reaction at a certain point because- A.
All of the enzymes are occupied with substrates
- B.
All of the enzymes have been denatured
- C.
A and B
- D.
None of the above
- 9.
![An enzyme uses hydrolysis to break down a complex carbohydrate. The products of the reaction will be
- ProProfs]( "An enzyme uses hydrolysis to break down a complex carbohydrate. The products of the reaction will be")
An enzyme uses hydrolysis to break down a complex carbohydrate. The products of the reaction will be- A.
Lipids
- B.
Simple sugars
- C.
Amino acids
- D.
Nucleic acids
- 10.Why would trypsin, an enzyme that hydrolyzes proteins, denature if placed in the stomach? Check all that apply.
- A.
Trypsin functions best in a basic environment.
- B.
The stomach has a higher temperature than the rest of the body.
- C.
The stomach has an acidic environment.
- D.
Pepsin competes with trypsin for substrates.
- 11.According to the induced-fit hypothesis, the active site of an enzyme
- 12.The molecules that enzymes combine with and convert into other molecules are called substrates.
- A.
True
- B.
False
- 13.Which of the following enzymes would digest a fat?
- A.
Protease
- B.
Fatase
- C.
Lactase
- D.
Lipase
- 14.Enzymes influence chemical reactions in living systems by
- A.
Providing the substrate required for the reaction to occur
- B.
Affecting the rate at which reactions occur
- C.
Absorbing water released when polymers are formed
- D.
Combining with excess hydrogen to form gaseous wastes
- 15.Which group of organic compounds includes the enzymes?
- A.
Proteins
- B.
Starches
- C.
Carbs
- D.
Lipids
- E.
Nucleic acids
- 16.
![The optimum temperature for the action of this enzyme is approximately - ProProfs]( "The optimum temperature for the action of this enzyme is approximately")
The optimum temperature for the action of this enzyme is approximately- A.
15 C
- B.
22 C
- C.
37 C
- D.
50 C
- 17.
![- ProProfs]()
- A.
A molecule of oxygen
- B.
An end product
- C.
An organic catalyst
- D.
The substrate
- 18.
![How will the rate of the reaction change if the temperature is raised to 50 degrees Cesius? - ProProfs]( "How will the rate of the reaction change if the temperature is raised to 50 degrees Cesius?")
How will the rate of the reaction change if the temperature is raised to 50 degrees Cesius?- A.
The reaction rate will increase.
- B.
The reaction rate will decrease.
- 19.
![In order for this firefly to produce light without heat, the following must be present: - ProProfs]( "In order for this firefly to produce light without heat, the following must be present:")
In order for this firefly to produce light without heat, the following must be present:- A.
Oxygen, luciferase, and luciferose
- B.
ATP and luciferase
- C.
ATP, luciferase, oxygen
- D.
Luciferase, oxygen, luciferin, ATP
- 20.Why do fireflies bioluminesce?
- A.
To attract mates
- B.
Because owl city says so
- C.
Because of nothing
- D.
To attract predators
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