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Enzymes

Total questions: 18

Worksheet time: 17mins

Name
Class
Date
1.
What is structure E, F, G?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
2.
The molecule an enzyme is working on is called the:
a)
Substrate
b)
Solvent
c)
Allosteric Inhibitor
d)
CoEnzyme
3.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
4.

Catalysts

a)

the substances changed during a chemical reaction (goes into the process)

b)

the substances made by a chemical reaction (comes out of the process)

c)

substance that speeds up the rate of a chemical reaction

d)

reactant of an enzyme-catalyzed reaction

5.

Products

a)

the substances changed during a chemical reaction (goes into the process)

b)

the substances made by a chemical reaction (comes out of the process)

c)

substance that speeds up the rate of a chemical reaction

d)

reactant of an enzyme-catalyzed reaction

6.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
7.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
8.
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.
9.

Energy

a)

proteins that speed up chemical reactions

b)

Changing substances by breaking and forming bonds (includes hydrolysis and dehydration reactions)

c)

the capacity for doing work

d)

the energy needed to start a chemical reaction

10.
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 .
11.

Letter D...

a)

enzyme

b)

active site

c)

substrate

d)

products

12.

In the diagram, what is letter A?

a)

product

b)

enzyme-substrate complex

c)

substrate

d)

active site

13.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
14.

Enzymes are an example of

a)

lipids

b)

carbohydrates

c)

protein

d)

nucleic acid

15.

Reactants

a)

the substances changed during a chemical reaction (goes into the process)

b)

the substances made by a chemical reaction (comes out of the process)

c)

substance that speeds up the rate of a chemical reaction

d)

reactant of an enzyme-catalyzed reaction

16.
Which substrate would this enzyme catalyze?
a)
Δ
b)
σ
c)
d)
μ
17.

Absorbs energy

a)

endothermic reaction

b)

exothermic reaction

18.

What is energy.

a)

Power that is created, transferred or transformed Usable power Forms: light, heat, electrical Can be transformed from one form to another.

b)

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c)

food that makes up energy

d)

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