AAMC FL2 Chem/Phys Missed Concepts

Question 1

Physics

Light Energy Equation

Answer 1

E = hf = hc/λ

h = 6.62 x 10^-34 Js
c = 3 x 10^8 m/s

Units: eV = J

Question 2

Biochemistry

kcat Equation

Answer 2

Kcat = Vmax/[E]

Units: M/s/M = s^-1

Question 3

Physics

Absorption of UV light by organic molecules always results in

Answer 3

electronic excitation (bond breaking, ionization/bond vibrations can result)

Question 4

Physics

Half-life of a radioactive material

Answer 4

the time it takes for half of all the radioactice nuclei to decay into their daughter nuclei

Question 5

Biochemistry

What kind of curve is cooperative?

Answer 5

sigmoidal

Question 6

Physics

Oxygen Pressure Equation

Answer 6

Pair = P + 1/2pv^2

P = oxygen static pressure

Question 7

Physics

Venturi Effect

Answer 7

Static pressure of the air is larger than the static pressure of the oxygen in flow

This causes air to enter a mask

Question 8

Biochemistry

Triacylglycerols

Answer 8

• neutral storage protein
• 3 fatty acids ester-linked to a single glycerol

Question 9

General Chemistry

Anode =
Cathode =

Answer 9

anode = oxidation = loss of e- = increased oxidation state

cathode = reduction = gain of e- = decreased oxidation state

Question 10

Physics

Boyle’s Law

Answer 10

pressure and volume of a gas have an inverse relationship when temperature is constant
P1V1 = P2V2

Question 11

Physics

Charle’s Law

Answer 11

Describes how gases tend to expand when heated

Volume is directly proportional to absolute temperature, if pressure remains constant

V1/T1 = V2/T2

Question 12

General Chemistry

Heisenberg Uncertainty Principle

Answer 12

there is inherent uncertainty in the act of measuring a variable of a particle

applied to the position and momentum of a partical

Question 13

General Chemistry

Lewis Base

Answer 13

donates non-bonding electron pair forming a covalent interaction

Question 14

General Chemistry

Lewis Acid

Answer 14

nonbonding electron pair acceptor

Question 15

General Chemstry

Function of a Catalyst

Answer 15

increase the rate of a chemical reaction

increase the amount of product per unit time

Question 16

General Chemistry

Coordinate Covalent Bond

Answer 16

interaction between a metal cation and electron pair donor

Question 17

General Chemistry

Coordinate ionic bond

Answer 17

one atom donates its electrons to form the bond

Question 18

General Chemistry

Covalent Bond

Answer 18

sharing of electrons to form electron pairs between atoms

Question 19

General Chemistry

Ionic Bond

Answer 19

electrostatic interaction between oppositely charged ions

Question 20

General Chemistry

coordination number (ligancy)

Answer 20

the number of atoms, ions, or molecules bonded to the atom in question

Question 21

General Chemistry

Oxidation number

Answer 21

when an atom, molecule, or ion loses one or more electrons in a chemical reaction

oxidation = increased oxidation number
reduction = decreased oxidation number

Question 22

Biochemistry

Henderson-Hasselbach Equation

Answer 22

pH = pka + log ([base]/[acid])

Question 23

Biology

systolic pressure

Answer 23

the first sound of blood flow that can be heard once the pressure exerted by the inflatable cuff falls below the pressure in the artery

higher number

Question 24

General Chemistry

Hess’s Law

Answer 24

the total enthalpy change for the reaction is the sum of all changes

Question 25

Physics

At STP what is the volume of any gas?

Answer 25

22.4 L/mol

Question 26

Physics

Average Power

Answer 26

P = PE/time = mgh/t

Question 27

Physics

work (elastics/springs)

Answer 27

W = 1/2kx^2

Question 28

Sound

Intensity Ratio

Answer 28

dBf = dBi +10log(If/Ii)

(dBf - dBi)/10 = log(If/Ii)

10^(dBf - dBi)/10 = If/Ii

Question 29

Physics

Negative Focal Length = [–] lens

Answer 29

diverging
* form virtual and reduced images of objects situated at distances larger than the focal length

Question 30

Physics

Energy Conversions through a battery powered resitive circuit

Answer 30

Chemical to electrical to thermal