MCAT EXAM REVIEW 2 QUESTIONS
AND ANSWERS (GRADED A)
what will increase electric field strength - ANSWER - formula= E=mg/q
therefore,
increasing the density of the oil and decreasing the charge magnitude of the drop
will increase the E
what will decrease electric field strength - ANSWER - formula= E=mg/q
decreasing the mass of the oil drop would decrease the E
voltage formula - ANSWER - V=I*R (voltage = current*resistance)
in an oil drop experience what explains the variation in the values of the floating
voltage for the different droplets - ANSWER - the charge of the droplets differ
because the amount of ionization due to the x-rays is random
there is no way to control the exact number of excess electrons in the ionized air
that will cling to a falling oil droplet, but the net charge must be a whole number
multiple of the elementary charge
there is no drag from something that isnt - ANSWER - moving
like a droplet in static equilibrium
N vs S vs W blots - ANSWER - N=RNA
S=DNA
W= protein
,leptin - ANSWER - A hormone produced by adipose (fat) cells that acts as a satiety
factor in regulating appetite.
ghrelin - ANSWER - A hunger-arousing hormone secreted by an empty stomach
what will cause oxidative phosphorylation to not proceed - ANSWER - in the absence
of the proton gradient across the inner mitochondria membrane no electrochemical
gradient has been built= not ox phos
if the proton gradient stops functioning, what will happen to the ETC - ANSWER -
ETC will continue to pass electrons along the transport chain, but the piped protons
will return to the matrix of the mito when protons gradient restored
ATP is a particularly good energy carrier because it has - ANSWER - an intermediate
transfer potential
this allows higher energy phosphate carrier to drive the synthesis of ATP by
transferring their phosphate groups to ADP
how to determine polarity - ANSWER - the polarity of a bond depend on the
difference in EN between the two bonding atoms
the larger the difference, the more unequal the sharing of electrons, and the more
polar the bond
, intensity of sound - ANSWER - for each increase by 10 in the decibel level, the
intensity of the sound increases by a factor of 10.
55-35= 20 (so 10+10)
so 10^2=100
how doe you change a reactions equilibrium constant - ANSWER - change in
temperature
volume flow rate - ANSWER - f=Av
A= cross-sectional area of the cylinder
v= average speed of the flow
cross-sectional area of a cylinder units= m^3/s
lewis acid - ANSWER - acts as an electron acceptor
lewis base - ANSWER - functions as an electron donor
Bronsted acid - ANSWER - proton donor
bronsted base - ANSWER - proton acceptor
a low Kd means - ANSWER - high binding affinity
question 24 - ANSWER -
glutamate - ANSWER - acidic amino acid
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