What joins together nucleotides in a polynucleotide molecule?
phosphodiester linkage between a 3'OH group and a 5' phosphate group
The 5' cap on mRNA is a:
modified guanine residue
Bacteria that have flagella are classified as:
bacilli or spirilla
enzyme that acts specifically to relieve the strain caused by unwinding a DNA double helix
topoisomerase
A higher concentration of Na+ ions is found [inside OR outside] a cell.
outside
condyloid joint
angular motion in 2 planes and circumduction
the first protein of the transcription initiation complex
TFIID
sliding filament model
sarcomere contracts, thick & thin filaments slide across each other
photoautotrophs
bacteria that depend on light and CO2
coenzyme that links together 2 different redoc reactions
hydrogen carriers
plasmogamy
the fusion of 2 parent cytoplasm during fungi sexual reproduction
The start codon codes for what amino acid?
AUG; methionine
The 2 main components of bacterial cytoplasm:
1) DNA
2) ribosomes
organelle responsible for the capture/storage of calcium ions
smooth ER
urine is concentrated in the
juxtamedullary nephron capillary beds
an increase in estrogen inhibits what hormones?
FSH and LH (preventing development of more follicles)
The Chain Rule
If f(x) and g(x) are differentiable functions, and , then F'(x) = f'(g(x)) g'(x).
Alternatively, if y=f(u) and u=g(x), then
the vertical line inside the rectangle in a box plot indicates:
the median
?
-1
incumbent
person who currently holds the position
diaphanous
light and delicate
cursory
hasty and superficial
fray
struggle; fight
Boyle's law
P1V1=P2V2
the P of a fixed amount of gas at a constant T is inversely proportional to the V of gas
Charles' law
V1/T1=V2/T2
V at a constant P is directly proportional to T
Avogadro's law
V1/n1=V2/n2
V is directly proportional to n
Ideal gas law
PV=nRT
Boyle's + Charles' laws
Dalton's law
law of partial pressures - the total P of a mixture of gases is equal to the sum of the P that would be exerted by each gas if it occupied the space on its own
P1 = X1Ptotal
Kinetic Molecular Theory of Gases
The average KE of gas molecules is proportional to the gas's TEMPERATURE
KE = 1/2 mv2
gases are:
composed of separate molecules
in constant motion
do not exert attractive/repulsive forces on one another
Graham's law
Graham's law of diffusion/effusion
r1/r2 =
r= rate of diffusion
M= molar mass
colligative properties
properties of solutions;
depend on the conectrations of different parts of the solution
Raoult's law
the vapor pressure of a solvent (P1) over a solution is given by the vapor pressure of the pure solvent (P1o) times the mole fraction (X1) the solvent in the solution
P1 = X1P1o
pH equation
pH = -log10[H3O+]
Equilibrium constant equation (Ka)
Ka =
strong acid + strong base = ?
salt + water
strong acid + weak base = ?
salt;
weakly acidic solution
weak acid + strong base = ?
hydroxide ions;
basic solution
weak acid + weak base = ?
pH dependent on relative strength of each reactant
strong acids
HCl
HClO4
H2SO4
strong bases
NaOH
KOH
oxidizing agent
oxidizes
is reduced
gains electrons
total electrolytic cell potential (Eocell) equation
Eocell = Eocathode - Eoanode
cathode
electrode where reduction occurs
anode
electrode where oxidation occurs
reaction quotient (Q) equation
when
aA + bB -> cC + dD
electromotive force, emf
work per unit charge that is required to produce an electrical current
emf = Eored + Eoox
redox reaction in a galvanic cell
spontaneous
(+) standard emf
redox reaction in an electrolytic cell
nonspontaneous
(-) standard emf
amount of heat exchanged when a substance undergoes a change in T
q = msT
work equation
w = fD
enthalpy
heat content of a substance at constant pressure
enthalpy change;
change in heat content from the initial to the final state of a substance
entropy
measure of randomness and disorder of a system; S
entropy of the surroundings of a system
Gibbs free energy
amount of available energy in a system
reaction rate equations
rate
rate law, k
rate =
Le Chatelier's principle
if an external stress is applied to a system, the system responds by adjusting the reaction in a way that offsets the stress as the system achieves a new equilibrium