WorksheetsAP Bio Unit 6 Enzymes & Energy
Total questions: 20
Worksheet time: 13mins
Name
Class
Date
1.
A catalyst works by
a)
changing the order of the reaction
b)
increasing the temperature
c)
lowering the activation energy
d)
making the activated complex
2.
Endergonic reactions require:
a)
an input of energy
b)
a release of energy
c)
do not change energy
3.
Which of the following is true for anabolic reactions?
a)
They are spontaneous and breakdown molecules.
b)
They are nonspontaneous and breakdown molecules.
c)
They are spontaneous and build molecules.
d)
They are nonspontaneous and build molecules.
4.
Which type of reaction increases entropy?
a)
Endergonic
b)
Nonspontaneous
c)
Synthesis
d)
Exergonic
5.
The active site of an enzyme can:
a)
bind allosteric regulators.
b)
bind competitive inhibitors.
c)
bind non-competitive inhibitors.
d)
change the Gibbs Free Energy of the reaction.
6.
Which of the following do not affect enzymes ability to function?
a)
pH
b)
substrate concentration
c)
temperature
d)
water
7.
In general, enzymes do NOT:
a)
bind permanently to their substrates
b)
have names ending in -ase
c)
have their function changed with extremely high temperatures
d)
react with a specific substrate
8.
The equation that relates enthalpy, temperature and entropy is
a)
Hess's Law
b)
Second Law of Thermodynamics
c)
Gibbs Free Energy
d)
Calorimetry
9.
The break down of larger molecules into small one.
a)
metabolism
b)
catabolism
c)
anabolism
d)
oxidation
10.
sum of all chemical reactions
a)
chemosynthesis
b)
cellular respiration
c)
metabolism
d)
photosynthesis
11.
What is being represented by the letter B in the image?
a)
Substrate
b)
Enzyme
c)
reactants
d)
Product
12.
What type of reaction is occurring in this graph?
a)
endergonic
b)
exergonic
c)
unable to determine
13.
Enzymes are usually....
a)
Proteins
b)
Lipids
c)
Carbohydrates
d)
None of the Above
14.
Use the diagram to answer the question. Between which parts of the molecule must the bonds be broken to form an ADP molecule?
a)
A and B
b)
A and C
c)
B and C
d)
C and D
15.
Energy is released from ATP when
a)
a phosphate group is added
b)
adenine bonds to ribose
c)
ATP is exposed to sunlight
d)
a phosphate group is removed
16.
Which of the following is an example of potential rather than kinetic energy?
a)
the flight of an insect foraging for food
b)
the muscle contractions of a person mowing grass
c)
water rushing over Niagara Falls
d)
a molecule of glucose
17.
Succinate dehydrogenase catalyzes the conversion of succinate to fumarate. The reaction is inhibited by malonic acid, which resembles succinate but cannot be acted upon by succinate dehydrogenase. Increasing the ratio of succinate to malonic acid reduces the inhibitory effect of malonic acid. What is malonic acid's role with respect to succinate dehydrogenase?
a)
It is a competitive inhibitor.
b)
It is an allosteric regulator.
c)
It is able to bind to succinate.
d)
It blocks the binding of fumarate.
18.
The place, other than the active site, where activators and inhibitors bind to an enzyme is called the ________ site.
a)
competitive
b)
allosteric
c)
alterior
d)
rate
19.
If a process is spontaneous, what can be said about the Gibbs Free Energy of the process?
a)
ΔG is negative
b)
ΔG is positive
c)
ΔG is zero
20.
Where is the most easily accessible energy stored in an ATP molecule?
a)
between the 1st and 2nd phosphate groups
b)
between the adenine and ribose groups
c)
between the 2nd and 3rd phosphate groups
d)
between the ribose and the 1st phosphate groups
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