Energetics (1)
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Caleb I.
BIOL 212
Dr. Kukday
2/06/2017
1.) Vocabulary Review- Match the Terms & Definitions:
a. Energy associated with motion
i.
Lactase ______
b. Work done by creating ion
ii.
Synthetic Work ______
gradients across a membrane
iii. Mechanical Work ______
c. Energy(heat) cannot be created
iv.
Concentration Work ______
or destroyed
v.
Electrical Work ______
d. Adding a phosphate group to a
vi.
Potential Energy ______
molecule
vii.
Kinetic Energy ______
e. Work done by movement down
viii. First law of Thermodynamics
a concentration gradient
______
f. A reaction that stores energy
ix. Second law of
from the atmosphere
Thermodynamics ______
g. Energy that is stored
x. Phosphorylation ______
h. Work done by molecules
xi. Endergonic ______
moving past each other
xii. Exergonic ______
i. A reaction that releases energy
to the atmosphere
j. Work used to create a
macromolecule
k. Enzyme that processes lactose
l. Transformation of energy from
one form to another increases
entropy
2.) Can you apply the concepts of chemical energy and energy states in explaining the
functions of ATP and of enzymes in cellular chemistry? ----- Draw a reaction depicting
the hydrolysis of ATP. Be sure to show the change in energy:
1060 Hixson-Lied Student Success Center  515-294-6624  [email protected]  http://www.si.iastate.edu
3.) Can you describe the role of enzymes in chemical reactions? ----- Fill in the blanks
below:
i.
Enzymes, when “on”, ____________(increase/decrease) the reaction speed.
ii.
A _________ lowers the activation energy of a reaction
iii.
Enzymes change reactants into products through ______________ ____________
_____________
iv.
A _________ is the substance that binds to the active site
v.
The __________ __________ is the location where the reaction takes place
4.) Can you determine whether a chemical reaction is spontaneous or not based on free
energy change values? ----- Is this reaction spontaneous? How do you know?
1060 Hixson-Lied Student Success Center  515-294-6624  [email protected]  http://www.si.iastate.edu
5.) Can you distinguish between endergonic and exergonic reactions? ----- Draw the energy
graph for both an endergonic and exergonic reaction. Label the axes accordingly:
6.) Can you illustrate the vital role that ATP plays in cellular metabolism ----- Discuss how
ATP is used after it is generated. Where does it go in the cell? What is its role?
1060 Hixson-Lied Student Success Center  515-294-6624  [email protected]  http://www.si.iastate.edu
7.) Can you predict the effects of a block in one step of a metabolic pathway on the series of
reactions after that step (given the series of steps)? -----
Dr. Kukday’s “Can You?” Questions (Highlighted ones are addressed in this worksheet, you will
need to address the ones that aren’t highlighted on your own time):
1.) Can you apply the concepts of chemical energy and energy states in explaining the
functions of ATP and of enzymes in cellular chemistry?
2.) Can you describe the role of enzymes in chemical reactions?
3.) Can you determine whether a chemical reaction is spontaneous or not based on free
energy change values?
4.) Can you distinguish between endergonic and exergonic reactions?
5.) Can you illustrate the vital role that ATP plays in cellular metabolism?
6.) Can you predict the effects of a block in one step of a metabolic pathway on the series of
reactions after that step (given the series of steps)?
1060 Hixson-Lied Student Success Center  515-294-6624  [email protected]  http://www.si.iastate.edu