AAMC FL2 C/P /Exam Questions with Correct Verified Answers/
Updated 2024 – Rated A+
What phenomenon causes static air to be drawn into the mask when oxygen flows?
A. Doppler effect
B. Venturi effect
C. Diffusion
D. Dispersion - ANSWER - The answer to this question is B because oxygen pressure is the sum of the
oxygen static pressure P and the oxygen flow pressure ρv2/2. In the area of the mask openings, Pair = P +
ρv2/2, thus Pair > P. Air enters the mask because the static pressure of the air is larger than the static
pressure of the oxygen in flow. This is the Venturi effect, and the mask is called the Venturi mask.
Doppler effect - ANSWER - An observed change in the frequency of a wave when the source or observer
is moving
Venturi effect - ANSWER - Reduction in pressure of a fluid resulting from the speed increase as fluids are
forced to flow faster through narrow spaces.
What causes duplex DNA with a certain (A + T):(G + C) ratio to melt at a higher temperature than
comparable length duplex DNA with a greater (A + T):(G + C) ratio?
A. Stronger van der Waals forces of pyrimidines
B. Stronger van der Waals forces of purines
C. Increased π- stacking strength
D. Reduced electrostatic repulsion of phosphates - ANSWER - The answer to this question is C. G-C base
pairs form stronger π-stacking interactions than A-T base pairs, thereby creating the most thermal
stability. This disparity has often been used to explain the increased melting temperature of DNA rich in
GC content.
What are the structural features possessed by storage lipids?
pg. 1
,A. Two fatty acids ester-linked to a single glycerol plus a charged head group
B. Three fatty acids ester-linked to a single glycerol
C. Two fatty acids ester-linked to a single sphingosine plus a charged head group
D. Three fatty acids ester-linked to a single sphingosine - ANSWER - The answer to this question is B
because triacylglycerols are neutral storage lipids. They consist of three fatty acids ester-linked to a single
glycerol.
In the overall electrochemical reaction: N2(g) + H2(g) NH3(g)
A. nitrogen is oxidized at the anode, and hydrogen is reduced at the cathode.
B. nitrogen is reduced at the cathode, and hydrogen is oxidized at the anode.
C. nitrogen is reduced at the anode, and hydrogen is oxidized at the cathode.
D. nitrogen is oxidized at the cathode, and hydrogen is reduced at the anode. - ANSWER - The answer to
this question is B because oxidation always occurs at the anode and reduction at the cathode of an
electrochemical cell. Since nitrogen decreases in oxidation state during the reaction, it is reduced.
Hydrogen, on the other hand, increases in oxidation state and is, therefore, oxidized.
RED CAT
AN OX
Looking at Reaction 1:N2 starts at 0 ox state and goes to -3 so it's reduced. H2 starts at 0 ox state and
goes to +1 so it's oxidized
In industrial use, ammonia is continuously removed from the reaction mixture. This serves to drive
Reaction 1 because of:
A. Boyle's law.
B. Charles's law.
C. Heisenberg's principle.
D. Le Châtelier's principle. - ANSWER - The answer to this question is D because removing a product as it
forms causes a displacement from the equilibrium condition. The system will respond by shifting more
reactants to the product side. This is an example of Le Châtelier's principle.
pg. 2
, Boyle's Law - ANSWER - A principle that describes the relationship between the pressure and volume of
a gas at constant temperature
P1V1=P2V2
Charles' Law - ANSWER - the law that states that for a fixed amount of gas at a constant pressure, the
volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases
as the temperature of the gas decreases
V1/T1 = V2/T2
Heisenberg uncertainty principle - ANSWER - states that it is impossible to determine simultaneously
both the position and velocity of an electron or any other particle
The lone pair of electrons in ammonia allows the molecule to:
A. assume a planar structure.
B. act as an oxidizing agent.
C. act as a Lewis acid in water.
D. act as a Lewis base in water. - ANSWER - The answer to this question is D because, by definition, a
Lewis base is a substance that donates an electron pair in forming a covalent interaction.
Lewis base - ANSWER - an atom, ion, or molecule that donates an electron pair to form a covalent bond
Lewis acid - ANSWER - an atom, ion, or molecule that accepts an electron pair to form a covalent bond
What is the role of the solid-state catalyst in the Haber process?
A. It increases the amount of ammonia produced per unit time.
B. It increases the total amount of ammonia produced.
C. It decreases the amount of ammonia that decomposes per unit time.
D. It decreases the total amount of ammonia produced. - ANSWER - The answer to this question is A
because catalysts increase the rate of chemical reaction, which is the amount of product formed per unit
time.
pg. 3
Updated 2024 – Rated A+
What phenomenon causes static air to be drawn into the mask when oxygen flows?
A. Doppler effect
B. Venturi effect
C. Diffusion
D. Dispersion - ANSWER - The answer to this question is B because oxygen pressure is the sum of the
oxygen static pressure P and the oxygen flow pressure ρv2/2. In the area of the mask openings, Pair = P +
ρv2/2, thus Pair > P. Air enters the mask because the static pressure of the air is larger than the static
pressure of the oxygen in flow. This is the Venturi effect, and the mask is called the Venturi mask.
Doppler effect - ANSWER - An observed change in the frequency of a wave when the source or observer
is moving
Venturi effect - ANSWER - Reduction in pressure of a fluid resulting from the speed increase as fluids are
forced to flow faster through narrow spaces.
What causes duplex DNA with a certain (A + T):(G + C) ratio to melt at a higher temperature than
comparable length duplex DNA with a greater (A + T):(G + C) ratio?
A. Stronger van der Waals forces of pyrimidines
B. Stronger van der Waals forces of purines
C. Increased π- stacking strength
D. Reduced electrostatic repulsion of phosphates - ANSWER - The answer to this question is C. G-C base
pairs form stronger π-stacking interactions than A-T base pairs, thereby creating the most thermal
stability. This disparity has often been used to explain the increased melting temperature of DNA rich in
GC content.
What are the structural features possessed by storage lipids?
pg. 1
,A. Two fatty acids ester-linked to a single glycerol plus a charged head group
B. Three fatty acids ester-linked to a single glycerol
C. Two fatty acids ester-linked to a single sphingosine plus a charged head group
D. Three fatty acids ester-linked to a single sphingosine - ANSWER - The answer to this question is B
because triacylglycerols are neutral storage lipids. They consist of three fatty acids ester-linked to a single
glycerol.
In the overall electrochemical reaction: N2(g) + H2(g) NH3(g)
A. nitrogen is oxidized at the anode, and hydrogen is reduced at the cathode.
B. nitrogen is reduced at the cathode, and hydrogen is oxidized at the anode.
C. nitrogen is reduced at the anode, and hydrogen is oxidized at the cathode.
D. nitrogen is oxidized at the cathode, and hydrogen is reduced at the anode. - ANSWER - The answer to
this question is B because oxidation always occurs at the anode and reduction at the cathode of an
electrochemical cell. Since nitrogen decreases in oxidation state during the reaction, it is reduced.
Hydrogen, on the other hand, increases in oxidation state and is, therefore, oxidized.
RED CAT
AN OX
Looking at Reaction 1:N2 starts at 0 ox state and goes to -3 so it's reduced. H2 starts at 0 ox state and
goes to +1 so it's oxidized
In industrial use, ammonia is continuously removed from the reaction mixture. This serves to drive
Reaction 1 because of:
A. Boyle's law.
B. Charles's law.
C. Heisenberg's principle.
D. Le Châtelier's principle. - ANSWER - The answer to this question is D because removing a product as it
forms causes a displacement from the equilibrium condition. The system will respond by shifting more
reactants to the product side. This is an example of Le Châtelier's principle.
pg. 2
, Boyle's Law - ANSWER - A principle that describes the relationship between the pressure and volume of
a gas at constant temperature
P1V1=P2V2
Charles' Law - ANSWER - the law that states that for a fixed amount of gas at a constant pressure, the
volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases
as the temperature of the gas decreases
V1/T1 = V2/T2
Heisenberg uncertainty principle - ANSWER - states that it is impossible to determine simultaneously
both the position and velocity of an electron or any other particle
The lone pair of electrons in ammonia allows the molecule to:
A. assume a planar structure.
B. act as an oxidizing agent.
C. act as a Lewis acid in water.
D. act as a Lewis base in water. - ANSWER - The answer to this question is D because, by definition, a
Lewis base is a substance that donates an electron pair in forming a covalent interaction.
Lewis base - ANSWER - an atom, ion, or molecule that donates an electron pair to form a covalent bond
Lewis acid - ANSWER - an atom, ion, or molecule that accepts an electron pair to form a covalent bond
What is the role of the solid-state catalyst in the Haber process?
A. It increases the amount of ammonia produced per unit time.
B. It increases the total amount of ammonia produced.
C. It decreases the amount of ammonia that decomposes per unit time.
D. It decreases the total amount of ammonia produced. - ANSWER - The answer to this question is A
because catalysts increase the rate of chemical reaction, which is the amount of product formed per unit
time.
pg. 3
