WorksheetsUnit 1 Review Quiz Enzymes
Total questions: 13
Worksheet time: 10mins
What is the primary function of an enzyme in a biological reaction?
To provide energy for the reaction
To speed up the reaction by lowering activation energy
To act as a reactant in the reaction
To change the products of the reaction
Which part of the enzyme binds to the substrate?
Active site
Allosteric site
Inhibitor site
Product site
What is the term for the temporary structure formed when an enzyme binds to its substrate?
Enzyme-product complex
Enzyme-substrate complex
Substrate-inhibitor complex
Product-inhibitor complex
A graph shows enzyme activity on the y-axis and temperature on the x-axis. The activity increases with temperature up to a point, then sharply decreases. What does the sharp decrease in activity most likely indicate?
The enzyme is working at its optimal temperature
The enzyme has become denatured
The substrate concentration is too high
The reaction has reached equilibrium
Which of the following best describes the specificity of an enzyme for its substrate?
Enzymes are not involved in substrate binding
Enzymes can bind to any molecule
Enzymes bind only to specific substrates due to the shape of their active site
Enzymes change their shape to fit any substrate
What effect does increasing substrate concentration have on the rate of an enzyme-catalyzed reaction when the enzyme is not saturated?
The reaction rate decreases
The reaction rate remains unchanged
The enzyme is denatured
The reaction rate increases
Which statement is true about enzymes after they catalyze a reaction?
They are consumed and cannot be reused
They return to their original state and can catalyze more reactions
They are permanently altered
They become part of the product
Label the picture correctly.
Products
Substrate
Active Site
Enzyme
Enzyme-Substrate Complex
All of the following affect the functioning of an enzyme EXCEPT:
pH
temperature
metabolism
enzyme concentration, substrate concentration, inhibitor molecules
Which color line represent a reaction with an enzyme present?
Blue
Red
Both
Neither
