AAMC Material: MCAT Chemical And Physical Foundati
AAMC Material: MCAT Chemical and Physical Foundati
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AAMC Material: MCAT Chemical and Physical Foundations of Biological Systems || Questions and 100% Accurate Answers.
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AAMC Material: MCAT Chemical and Physical Foundati
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AAMC Material: MCAT Chemical And Physical Foundati
How do you find wavelength from velocity and frequency? correct answers Velocity/frequency
What can be inferred from the products of a reaction and their relative thermodynamic stabilities? correct answers A thermodynamic mixture of isomeric products will have a relative mole ratio of products w...
how do you find wavelength from velocity and frequ
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AAMC Material: MCAT Chemical and Physical
Foundations of Biological Systems || Questions and 100%
Accurate Answers.
How do you find wavelength from velocity and frequency? correct answers Velocity/frequency
What can be inferred from the products of a reaction and their relative thermodynamic
stabilities? correct answers A thermodynamic mixture of isomeric products will have a relative
mole ratio of products which is directly related to the relative stability of the products. Therefore,
the product with a higher mole ratio will have a higher thermodynamic stability.
What is the equation for the total amount of charge stored by a capacitor? correct answers
capacitance x voltage
What is the equation for energy stored by a capacitor? correct answers Ecap = QV/2 = CV^2/2 =
Q^2/2C
What is the Doppler effect? correct answers A change in sound frequency caused by motion of
the sound source, motion of the listener, or both.
The frequency that a person on a railcar hears before passing the horn is larger than the actual
frequency of the sound emitted. The person hears a frequency lower than the actual frequency
after passing the horn.
How much power would be required to keep a railcar moving at 40 m/s? correct answers Power
is equal to the decelerating force multiplied by the constant speed, so 1000 N x 40 m/s = 40 kW.
The relative thermodynamic stability of isomeric organic compounds can be inferred from which
type of experimental data? correct answers Heats of combustion. The relative thermodynamic
stability of isomers can be determined based on the amount of heat produced when the
compounds are combusted; less heat, greater stability.
What can you derive from Ka, Kb, and Kw? correct answers Ka * Kb = Kw
Thus Ka = Kw/Kb and Kb = Kw/Ka.
If Ka is bigger than Kw/Kb, then the molecule is an acid. If Kb is bigger than Kw/Ka, then the
molecule is a base.
How do you find the period of a time-varying signal? correct answers It is the shortest repetition
time. If each pulse is on for 500 ns, then off for 500 ns, then the period is 500 ns + 500 ns = 1000
ns.
What is the energy of a photon? correct answers E = hf
, E = hc/wavelength
How do you find the mass of solute given grams and volume? correct answers If you have 72
grams of a solute in a given volume, then you can determine the number of grams in a smaller
volume.
What is FAD? correct answers flavin adenine dinucleotide. It is an oxidizing agent, and it is
specifically a cofactor oxidant.
How many rings are in a steroid structure? correct answers 4
How do you lower the pH of a buffer? correct answers In order to lower the pH of a buffer, the
proportion of acidic buffer component must be increased.
Adding strong base, diluting with water, or adding a different basic salt will not lower the pH.
What is the byproduct of peptide formation? correct answers Water (18 amu) is formed from the
OH of the carboxyl group and the NH of the amino group.
Which experimental condition is NOT necessary to achieve reliable data for Michaelis-Menten
enzyme kinetics? correct answers The reaction does not need to reach equilibrium before
measurements are taken. This is because, once the reaction reaches equilibrium, measurement of
V0 will be impossible and the kinetic data will look the same regardless of substrate
concentration.
Which experimental conditions are necessary to achieve reliable data for Michaelis-Menten
enzyme kinetics? correct answers The initial velocity is measured under steady state conditions.
The solution pH remains constant at all substrate concentrations.
The concentration of enzyme is lower than that of substrate.
Which equation do you use to find relative concentrations of hydroxide and acid in a solution?
correct answers [H3O+] * [OH-] = 10^-14 for aqueous solutions at 25 degrees Celsius.
Which atom is most likely involved in the coordination of calcium ions? correct answers Oxygen
because it is a lewis basic atom and it is present in the side chains or back bones of amino acids.
What is pyrrole? correct answers Pyrrole is a heterocyclic aromatic organic compound, a five-
membered ring with the formula C₄H₄NH. It is a colorless volatile liquid that darkens readily
upon exposure to air. nitrogen-based. Heme is a cofactor and it is a porphyrin, which has a basic
unit of pyrrole.
Given conductivity, how do you find resistivity? correct answers Resistivity is the inverse of the
conductivity. 1/conductivity.
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