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Enzymes
Test Description: Enzyme questions
Instructions: Answer all questions to get your test result.
1) Enzymes are made of which macromolecule?
A
Proteins
B
Lipids
C
Nucleic Acids
D
Carbohydrates
2) What is a substrate?
A
The energy source for a reaction
B
The molecule that an enzyme works on
C
A molecule that inhibits a reaction
D
The molecule that is created from an enzyme reaction
3) Enzymes work by...
A
Lowering the activation energy needed to start a reaction
B
Increasing the activation energy
C
Increasing the amount of reactants to a chemical reaction
D
Increasing the energy of a reaction
4) The lock and key model of an enzyme explains that....
A
Shape matters, and only one substrate fits one enzyme
B
Enzymes have to have the shape shape as their substrate
C
Many enzymes fit into one enzyme
D
A substrate is required to open an enzyme
5) Why are enzymes important to living organisms?
A
Without them reactions would be too slow
B
Enzymes are not needed.
C
Without them we couldn't get the water we need
D
Without them reactions would be too fast
6) Enzymes typically end with what suffix?
A
-ide
B
-ise
C
-ose
D
-ase
7) What factors can affect an enzyme catalyzed reaction?
A
Temperature and light
B
pH and Temp
C
Temperature and lipids
D
pH and lipids
8) What is the function of enzymes in biological systems
A
Enzymes act as substrates when the necessary proteins are unavailable
B
Enzymes act as catalysts to drive chemical reactions forward.
C
Enzymes bond with substrates to create the new reaction products
D
Enzymes act as products to create new chemical reactions
9) Why is the shape of an enzyme important?
A
It is not important
B
The smaller the shapes the quicker the reaction takes place
C
Certain shapes do not work
D
The enzyme and substrate have to fit together like a puzzle piece
10) What is activation energy?
A
The energy needed to activate an enzyme
B
The total energy stored in a chemical reaction
C
The total energy released from a chemical reaction
D
The amount of energy required to start a reaction
*select an answer for all questions
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