1
Created by Boundless
Which of the following illustrates the difference between anabolic and catabolic
pathways?
A
Anabolic reactions degrade complex molecules, and
catabolic reactions build up simple molecules.
B
Anabolic reactions synthesize molecules while catabolic
reactions degrade molecules.
C
Anabolic reactions release energy, and catabolic
reactions require energy.
D
An anabolic reaction must be facilitated by an enzyme,
whereas a catabolic reaction does not.
2
Created by Boundless
Energy harvested from carbohydrates are used to make which of the following?
A
starch
B
ATP
C
glycogen
D
glucose
3
Created by Boundless
Which of the following cell processes requires the use of energy?
A
transport of hormones and neurotransmitters between
cells
B
all of these answers
C
degradation of complex carbohydrates into simple sugars
D
movement of surrounding materials via the cilia and
flagella
4
Created by Boundless
Consider a pendulum swinging. Which type(s) of energy is/are associated with the
pendulum in the following instances: i. the moment at which it completes one cycle,
just before it begins to fall back towards the other end. ii. the moment that it is in
the middle between the two ends. iii. just before it reaches the end of one cycle
(just before instance i.).
A
i. potential, ii. potential and kinetic, iii. potential and
kinetic
B
i. potential and kinetic, ii. potential and kinetic, iii. kinetic
C
i. potential, ii. kinetic, iii. potential and kinetic
D
i. potential and kinetic, ii. kinetic iii. kinetic
5
Created by Boundless
A slinky at the top of a staircase has:
6
A
thermal energy.
B
potential energy.
C
kinetic energy.
D
chemical energy.
Created by Boundless
The catabolic process of breaking starch down into simpler molecules is
considered to be an:
A
exergonic reaction that releases energy.
B
endergonic reaction that release energy.
C
exergonic reaction that requires energy to proceed.
D
endergonic reaction that requires energy to proceed.
7
Created by Boundless
Which of the following statements about activation energy is true?
A
Activation energy is needed for a reaction to reach its
transition state.
B
Endergonic reaction don't require activation energy
because they consume energy.
C
Exergonic reactions don't require activation energy
because they release energy.
D
The source of heat energy is the activation energy from
its surroundings.
8
Created by Boundless
The first law of thermodynamic states that:
A
energy can be created, destroyed, transferred, and
transformed.
B
energy can be transferred and destroyed, but may not be
transformed.
C
energy cannot be created or destroyed, but can be
transferred or transformed.
D
9
energy in the universe is constant; therefore, destroying
it would lead to its re­creation.
Created by Boundless
How can a liquid increase its order and decrease randomness?
A
It can be mixed with other liquids.
B
all of these answers
C
It can freeze into a solid.
D
It can evaporate into a gas.
10
Created by Boundless
The energy released by the hydrolysis of ATP:
A
provides energy in coupled reactions
B
is equal to −57 kcal/mol
C
is primarily stored between the alpha and beta
phosphates
D
is harnessed as heat energy by the cell to perform work
11
Created by Boundless
An allosteric inhibitor does which of the following?
A
binds away from the active site and increases its affinity
for the substrate
B
binds away from the active site and decreases its affinity
for the substrate
C
binds directly to the active site and blocks it from binding
the substrate
D
binds directly to the active site and mimics the substrate
12
Created by Boundless
Which of the following analogies best describe the induced fit model of enzyme­
substrate binding?
A
a square peg fitting through a square hole
B
a key fitting into a lock
C
two jigsaw pieces fitting together
D
a handshake between two people