Chemistry
In the following reaction, which occurs spontaneously, this compound has the highest electron affinity.
Cd(s) + 2 H+(aq) → Cd2+(aq) + H2(g)
What is H+ (aq)
The reaction equation shows the reduction of H+ by Cd. Because the H+ accepts the electron readily from Cd, it can be determined that H+ has the highest electron affinity.
The speed of sound is greatest in this phase of matter.
What is the solid phase?
The speed of sound is greatest by far in a solid because of the strong intermolecular bonds and close proximity of the molecules.
This number of molecules of NADH are produced from six molecules of glucose that undergo glycolysis.
What is 12?
Each cycle of glycolysis produces two NADH molecules and requires an input of one glucose molecule.
This is the full name of the exam is required to gain entry to US MD and DO schools.
What is the Medical College Admission Test?
This is the number of bones in the human body.
What is 206?
The values of m and n when the following equation describes a 2nd order reaction.
Rate = k [A]m [B]n
(k is constant, m and n are whole numbers)
What is m = 1 and n = 1?
The reaction is second order if the sum of the exponents m and n equals 2. In rate laws, k is the rate constant. The sum of the exponents equals 2 when m equals 1 and n equals 1.
This amount of work is done by a constant horizontal 20-N force pushing a 50-kg block a distance of 10 m on a horizontal surface.
What is 200 J?
Work is the product of the force on an object and the distance the object moves in the direction of the applied force. In this case, work = 20 N x 10 m = 200 J.
This is the dependent variable in an experiment that determines the Michaelis-Menten kinetic parameters of an enzyme.
What is the initial velocity?
Enzymatic assays should be conducted in this way to generate a curve of velocity versus substrate concentration, which can then be used to determine the Vmax and KM of the reaction.
The number of total questions on the full length MCAT exam.
What is 230?
3 Sections contains 59 questions, while a fourth contains 53.
This is the largest bone in the human body.
What is the femur?
A student plans to add HCl to a solution containing Pb(NO3)2(aq).
To determine how much Pb2+ will precipitate from solution when the HCl is added, the student will need to know this constant.
What is the Ksp for PbCl2?
To determine how much Pb2+ will precipitate, the student must know the solubility of PbCl2, which is related to the solubility product constant Ksp of PbCl2.
In a myopic individual, the image of a distant object is focused in front of the retina, and requires this type of lens for correction.
What is a diverging lens?
A nearsighted (myopic) person can focus on nearby objects but cannot clearly see objects far away. The nearsighted eye has a focal length that is shorter than it should be, so the rays from a distant object form a sharp image in front of the retina. This condition is corrected by glasses with a diverging lens.
This amino acid has the highest isoelectric focusing point.
What is arginine?
The isoelectric point of an amino acid is the highest for basic amino acids, and arginine and lysine are both basic amino acids. However, arginine has a higher isoelectric point because it is more basic.
These are the four sections of the MCAT sections.
What are Chemical and Physical Foundations of Biological Systems, Critical Analysis and Reasoning Skills, Biological and Biochemical Foundations of Living Systems, and Psychological, Social, and Biological Foundations of Behavior?
AKA: C/P, CARS, B/B, Psych/Soc
This is the average amount of blood in a human body.
What is 5 liters?
This VSEPR geometry describes sp3d hybridized orbitals. Assume there are no lone pairs.
What is trigonal bipyramidal?
A 15.0-eV photon collides with and ionizes a hydrogen atom. If the atom was originally in the ground state (ionization potential =13.6 eV).
This represents the kinetic energy of the ejected electron in eV.
What is 1.4 eV?
Conservation of energy requires that the 15.0 eV photon energy first provides the ionization energy to unbind the electron, and then allows any excess energy to become the electron's kinetic energy. The kinetic energy in this case is 15.0 eV - 13.6 eV = 1.4 eV.
This enzymatic kinetic parameter is NOT affected by the presence of an uncompetitive inhibitor.
What is KM/VMAX?
Uncompetitive inhibitors affect both the kcat and KM of an enzymatically catalyzed reaction in a way that does not change the slope of the Lineweaver-Burk plot, which means the KM/Vmax is not changed
This is the full range of scores one can obtain on the MCAT.
(List minimum and maximum values).
What are 472 to 528?
This gland produces Human Growth Hormone (HGH).
What is the anterior pituitary gland?
A gas that occupies 10 L at 1 atm and 25C will occupy a volume that is _____ 0.2 L at 500 atm and 25C.
(greater than, equal to, or less than)
What is greater than?
The ideal gas law makes the assumption that molecules have no volume. This assumption is adequate when the gas is at 1 atm, but when the pressure is increased to 500 atm the volume of the gas molecules is no longer negligible.
We expect this to happen to the atomic number and atomic mass of an element undergoing beta decay.
What is an increase in atomic number and (basically) no change in atomic mass?
An electron has a negative charge and very little mass compared with the charge and mass of nucleons. If an electron is emitted by a nucleus to balance the charge, the nucleus must gain one positive charge (a proton); thus, the atomic number (number of protons in nucleus) increases by one. However, the atomic mass is nearly unchanged because an electron has only 0.05% of a proton’s mass.
Specific activity is a measure of this.
What is enzyme units per milligram of total protein in solution?
This is the number of students who take the MCAT on an average year.
Give answer rounded to the nearest ten-thousand.
(Data taken from 2017 to 2019)
These unstable molecules can attack the body's cells.
What are free radicals?