Font size
S
M
L
XL
Worksheetsproperties of enzymes
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
2.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered denature
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
3.
Enzymes
a)
Slow down a chemical reaction
b)
Speed up a chemical reaction
4.
What happens when an enzyme goes above its optimum temperature?
a)
It speeds up the reaction
b)
The enzyme binds to its substrate
c)
The enzyme becomes denatured
d)
The enzyme becomes natured
5.
What happens when an enzyme becomes denatured?
a)
The reaction slows down
b)
The reaction speeds up
6.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
7.
What makes an enzyme substrate specific?
a)
Size
b)
Shape
c)
Name
d)
Location it is found in
8.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered denature
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
9.
Cells can produce over one thousand different enzymes at a time. Enzymes are critical to the metabolism of these cells, but why are so many different enzymes needed?
a)
Cells are completely unable to control what enzymes
they produce
they produce
b)
The variety of enzymes prevents their actions from being inhibited.
c)
The active site of an enzyme can only bind to a specific substrate.
d)
The products of a reaction are always converted into new enzymes.
10.
Which best describe an enzyme?
a)
it is globular protein
b)
act as biological catalyst
c)
its monomer is amino acid
d)
speed up a chemical reaction
Reset
