Ukuran huruf
Lembar kerjaPractice: Enzyme affinity and immobilizing enzymes
Total soal: 13
Worksheet time: 26mins
Competitive enzyme inhibitors limit the formation of enzyme-substrate complexes. True or false?
True
False
Which line represents the enzyme with the COMPETITIVE inhibitor?
X
Y
Z
Which two curves have the same Km value? Tick two.
X
Y
Z
In the presence of a non-competitive inhibitor, Vmax is overcome by increasing the substrate concentration. True or false?
True
False
Which can be inferred from this graph?
Inhibitor A has the same affinity compared to without the inhibitor.
Inhibitor B has the same affinity compared to without the inhibitor.
Inhibitor A has a lower Vmax compared to without the inhibitor.
Inhibitor B has a higher Vmax compared to without the inhibitor.
When the substrate is not competing with the inhibitor for the active site...
...the affinity is the same
...the affinity increases
What can be used to find the rate of an enzyme-catalyzed reaction? Tick two.
increase in product concentration
decrease in substrate concentration
Michaelis-menten constant
What do you call the substrate concentration at which the reaction rate is half of Vmax?
Michaelis-menten constant
Enzyme affinity
Immoblization
Substrate concentration
Which is CORRECT about this graph?
The two lower curves are both with competitive inhibitors.
The dotted curve is with a non-competitive inhibitor.
The thinner curve is with a competitive inhibitor.
When the value of km increases...
...the enzyme affinity decreases.
...the Vmax increases.
...the enzyme affinity increases.
...the Vmax decreases.
The image shows alginate beads containing an enzyme. Which of the following is CORRECT?
the enzyme affinity is decreased
the enzyme is fixed in position
the enzyme is suspended in solution
the enzyme's Vmax is lower
The diagram shows how lactase can be immobilized to modify milk. What is the purpose of this set-up? Tick all that apply.
hydrolyse the lactose into glucose and galactose
produce lactose-free milk
help prevent the product from being contaminated
make lactase less stable
keep the enzyme for future use
Which statements states the significance of Vmax and km values? Tick all that apply.
Enables scientists to make computer models of cells.
Enzyme activity can be more accurately predicted.
Design better catalysts for genetic engineering.
Calculations can be applied to antibody-antigen binding.
Solution to poverty and overpopulation.
