SECTION 1: ACTIVATION ENERGY The picture to the right shows someone trying to push a boulder up a hill. In order for the boulder to reach its final destination at point B, it must be pushed to the top of the hill because once it reaches the top of the hill it will roll down the rest of the way. A similar scenario exists in chemistry, before a chemical reaction will take place, energy must be put into the system. The energy needed for a chemical reaction to move from point A to the top of the hill is known as activation energy, also written as Ea. Increasing Energy Activation Energy Activation Energy Energy Content of Reactants. Progress A + B Reactants. FIGURE 3 SV سعد Reaction Uncatalyzed Reaction (without enzyme) W FIGURE 2 Energy Content of Products Catalyzed Reaction (with enzyme) A C + D Products S X₁A ↓ (TIME) 3. Compare Figure 3 above to the Figure 1 (comparing the heights of 2 mountains), determine how using an enzyme in a chemical reaction impacts the reaction by answering these questions. As seen in the graph a. Does it speed up or slow down the reaction? b. What does the enzyme do to activation energy? c. Based on your answers to questions a and b, what do you think the term "catalyzed" means?
SECTION 1: ACTIVATION ENERGY The picture to the right shows someone trying to push a boulder up a hill. In order for the boulder to reach its final destination at point B, it must be pushed to the top of the hill because once it reaches the top of the hill it will roll down the rest of the way. A similar scenario exists in chemistry, before a chemical reaction will take place, energy must be put into the system. The energy needed for a chemical reaction to move from point A to the top of the hill is known as activation energy, also written as Ea. Increasing Energy Activation Energy Activation Energy Energy Content of Reactants. Progress A + B Reactants. FIGURE 3 SV سعد Reaction Uncatalyzed Reaction (without enzyme) W FIGURE 2 Energy Content of Products Catalyzed Reaction (with enzyme) A C + D Products S X₁A ↓ (TIME) 3. Compare Figure 3 above to the Figure 1 (comparing the heights of 2 mountains), determine how using an enzyme in a chemical reaction impacts the reaction by answering these questions. As seen in the graph a. Does it speed up or slow down the reaction? b. What does the enzyme do to activation energy? c. Based on your answers to questions a and b, what do you think the term "catalyzed" means?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:SECTION 1: ACTIVATION ENERGY
The picture to the right shows someone trying to push a
boulder up a hill. In order for the boulder to reach its final
destination at point B, it must be pushed to the top of the
hill because once it reaches the top of the hill it will roll
down the rest of the way. A similar scenario exists in
chemistry, before a chemical reaction will take place,
energy must be put into the system. The energy needed
for a chemical reaction to move from point A to the top of
the hill is known as activation energy, also written as Ea.
Increasing Energy.
Activation
Energy
Activation
Energy
Energy
Content of
Reactants
A + B
Reactants
FIGURE 3
J
Progress of Reaction.
t
$
Uncatalyzed
Reaction (without
enzyme)
Energy Content of
Products
V
FIGURE 2
Catalyzed Reaction
(with enzyme)
C + D
Products
A
م
اسکار
(TIME)
3. Compare Figure 3 above to the Figure 1 (comparing the heights of 2 mountains), determine
how using an enzyme in a chemical reaction impacts the reaction by answering these
questions.
As seen in
the graph
a. Does it speed up or slow down the reaction?
b. What does the enzyme do to activation energy?
c. Based on your answers to questions a and b, what do you think the term "catalyzed"
means?
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