AAMC Sample Test question with complete solution 2023

AAMC Sample Test question with complete solution 2023How many stereoisomers of Compound 1 exist? - correct answer Missed this question because I did not accurately count the stereo centers. There are 5. Using the 2^n rule, 32 stereoisomers can be calculated. What happens when concentrations are greater than the ksp? - correct answer Precipitate forms The peptide bond between which two amino acid residues is cleaved by HIV protease? - correct answer Missed this question because I did not recognize the structure of proline in the diagram. Proline has a closed 5 ring structure including the Nitrogen. Which image best illustrates the electric field lines between the inside of an axon and the surrounding extracellular solution? - correct answer Axons at rest have negative membrane voltage, meaning that the intracellular side is negatively charged and the extracellular side is positively charged. Electric field lines go positive to negative, so the arrows need to point into the axon. Channel X transmits only the smallest substances dissolved in the extracellular fluid through the axon membrane. Which substance does Channel X transmit? A.Proteins B.Sodium ions C.Potassium ions D.Chloride ions - correct answer Correct! Sodium ions. You got this right because you used the periodic table which according the explanation is a good way of figuring it out. Nice. What information about an axon is required to calculate the current associated with an NCV pulse? A.Conductivity, resistivity, and length B.Potential, conductivity, and radius C.Potential, resistivity, and radius D.Potential, resistance per unit length, and length - correct answer Had literally no idea. Answer is D. This is a question about Ohm's Law I=V/R I = current. V = voltage POTENtIAL R = Resistance per unit LENGTH What is a weak acid? - correct answer This means that the compound only partially ionized to form hydrogen ions. What is a weak base? - correct answer a base that ionizes only partially in dilute aqueous solution to form the conjugate acid of the base and hydroxide ion What is a strong base? - correct answer something that completely associates in a solution