1|Page
Bio 168 EXAM 2 ||Verified Exam!!|| Most Recent Exam
Actual Complete Real Verified Exam Questions And
Correct Answers (Verified Answers) Already Graded
A+ | Newest Exam!!!
Which of the following correctly describes all chemical
equilibrium? - Answer-Forward and reverse reactions
continue with no net effect on the concentrations of the
reactants and products.
The breakdown of large macromolecules as a source for
energy and carbon is a(n) _______. - Answer-a catabolic
pathway
Which of the following is the most correct interpretation of
the accompanying figure? - Answer-ATP is a molecule that
acts as an intermediary to store energy for cellular work
According to the induced fit hypothesis of enzyme
catalysis, _____. - Answer-the binding of the substrate
changes the shape of the enzyme's active site
Which of the following statements is most likely to be true
in the case of the feedback-regulated enzymatic pathway
shown? - Answer-P4 binds E1 and deactivates it.
,2|Page
Why do chemical reactions tend to speed up when the
concentration of the reactants is increased? - Answer-The
reactants collide more often.
The Haber process is typically carried out at a temperature
of approximately 500∘C. What would happen to the rate of
the forward reaction if the temperature were lowered to
100∘C? - Answer-the reaction rate would decrease
What would happen to the rate of the forward reaction if
the concentration of nitrogen were decreased? - Answer-
the reaction rate would increase
Which of the following would increase the rate of the
reverse reaction? - Answer-increasing the amount of
ammonia
What will happen to the rates of the forward and reverse
reactions when a catalyst is added? - Answer-both forward
and reverse reactions would increase
,3|Page
Which of these is an example of negative feedback? -
Answer-After you eat, insulin stimulates the lowering of
blood sugar levels.
You have isolated a previously unstudied protein, identified
its complete structure in detail, and determined that it
catalyzes the breakdown of a large substrate. You notice it
has two binding sites. One of these is large, apparently the
bonding site for the large substrate; the other is small,
possibly a binding site for a regulatory molecule. What do
these findings tell you about the mechanism of this
protein? - Answer-It is probably an enzyme that works
through allosteric regulation.
During a laboratory experiment, you discover that an
enzyme-catalyzed reaction has a G of -20 kcal/mol. If you
double the amount of enzyme in the reaction, what will be
the G for the new reaction? - Answer--20 kcal/mol
Which term describes the degree to which an element
attracts electrons? - Answer-electronegativity
, 4|Page
Which terms describe two atoms when they form a bond in
which electrons are completely transferred from one atom
to the other? - Answer-anion and cation
Which of the following statements is true of the bonds in a
water molecule - Answer-oxygen holds electrons more
tightly than hydrogen does, and the net charge is zero.
Which of the following statements is not true of most
cellular redox reactions? - Answer-a hydrogen atom is
transferred to the atom that loses an electron.
What kind of bond is formed when lithium and fluorine
combine to form lithium fluoride? - Answer-ionic
Enzymes.... - Answer-increase the rate of a reaction by
lowering the activation energy barrier
Some bacteria are metabolically active in hot springs
because _____. - Answer-their enzymes have high optimal
temperatures
You have discovered an enzyme that can catalyze two
different chemical reactions. Which of the following is most
Bio 168 EXAM 2 ||Verified Exam!!|| Most Recent Exam
Actual Complete Real Verified Exam Questions And
Correct Answers (Verified Answers) Already Graded
A+ | Newest Exam!!!
Which of the following correctly describes all chemical
equilibrium? - Answer-Forward and reverse reactions
continue with no net effect on the concentrations of the
reactants and products.
The breakdown of large macromolecules as a source for
energy and carbon is a(n) _______. - Answer-a catabolic
pathway
Which of the following is the most correct interpretation of
the accompanying figure? - Answer-ATP is a molecule that
acts as an intermediary to store energy for cellular work
According to the induced fit hypothesis of enzyme
catalysis, _____. - Answer-the binding of the substrate
changes the shape of the enzyme's active site
Which of the following statements is most likely to be true
in the case of the feedback-regulated enzymatic pathway
shown? - Answer-P4 binds E1 and deactivates it.
,2|Page
Why do chemical reactions tend to speed up when the
concentration of the reactants is increased? - Answer-The
reactants collide more often.
The Haber process is typically carried out at a temperature
of approximately 500∘C. What would happen to the rate of
the forward reaction if the temperature were lowered to
100∘C? - Answer-the reaction rate would decrease
What would happen to the rate of the forward reaction if
the concentration of nitrogen were decreased? - Answer-
the reaction rate would increase
Which of the following would increase the rate of the
reverse reaction? - Answer-increasing the amount of
ammonia
What will happen to the rates of the forward and reverse
reactions when a catalyst is added? - Answer-both forward
and reverse reactions would increase
,3|Page
Which of these is an example of negative feedback? -
Answer-After you eat, insulin stimulates the lowering of
blood sugar levels.
You have isolated a previously unstudied protein, identified
its complete structure in detail, and determined that it
catalyzes the breakdown of a large substrate. You notice it
has two binding sites. One of these is large, apparently the
bonding site for the large substrate; the other is small,
possibly a binding site for a regulatory molecule. What do
these findings tell you about the mechanism of this
protein? - Answer-It is probably an enzyme that works
through allosteric regulation.
During a laboratory experiment, you discover that an
enzyme-catalyzed reaction has a G of -20 kcal/mol. If you
double the amount of enzyme in the reaction, what will be
the G for the new reaction? - Answer--20 kcal/mol
Which term describes the degree to which an element
attracts electrons? - Answer-electronegativity
, 4|Page
Which terms describe two atoms when they form a bond in
which electrons are completely transferred from one atom
to the other? - Answer-anion and cation
Which of the following statements is true of the bonds in a
water molecule - Answer-oxygen holds electrons more
tightly than hydrogen does, and the net charge is zero.
Which of the following statements is not true of most
cellular redox reactions? - Answer-a hydrogen atom is
transferred to the atom that loses an electron.
What kind of bond is formed when lithium and fluorine
combine to form lithium fluoride? - Answer-ionic
Enzymes.... - Answer-increase the rate of a reaction by
lowering the activation energy barrier
Some bacteria are metabolically active in hot springs
because _____. - Answer-their enzymes have high optimal
temperatures
You have discovered an enzyme that can catalyze two
different chemical reactions. Which of the following is most
