MCAT AAMC Practice Test 2 Exam
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
One-Letter abbreviations of Amino Acids RNDQEW - CORRECT ANSWER R-
arginine, N-asparagine, D-aspartate, Q-Glutamine, E-glutamate, W-tryptophan
Side Chain pKas--DERHK - CORRECT ANSWER D(aspartate),E-glutamate--acidic
R(arginine)H-histidine-K-Leucine--Basic
Phosphoryl transfer from kinases comes from which phosphate? - CORRECT
ANSWER gamma phosphate
Venturi effect - CORRECT ANSWER The Venturi effect is the reduction in fluid
pressure that results when a fluid flows through a constricted section (or choke) of a pipe.
(oxygen pressure is the sum of the oxygen static pressure P and the oxygen flow pressure
(rho)v^2/2. In fluid dynamics, an incompressible fluid's velocity must increase as it passes
through a constriction in accord with the principle of mass continuity, while its static pressure
must decrease in accord with the principle of conservation of mechanical energy. Thus any
gain in kinetic energy a fluid may accrue due to its increased velocity through a constriction
is balanced by a drop in pressure.
Hendelson Hasselbach Equation - CORRECT ANSWER pH = pKa + ln(A-/HA)
solubility product constant expression - CORRECT ANSWER Ksp = ([A-])*([B+])
*note, these are the concentrations of ions that are present when the solution is completely
saturated
If one's min sound intensity is 20dB, and another's is 40dB, what is the ratio of the sound
intensities - CORRECT ANSWER 40db-20db=20db. 20db--> decimal log is 2. ratio of
hte sound intensities is 100
, I (in decibels) = 10log(I/Io) = 20log(P/Po) = 10log(P^2/Po^2)
pyrimidines are... - CORRECT ANSWER one ring. cytosine and thymine (and uracil)
purines - CORRECT ANSWER two rings. adenine and guanine.
ubiquitination leads to... - CORRECT ANSWER degradation by proteasome (not going
into lysosome)
surge in LH causes...(during menstruation) - CORRECT ANSWER increase in
progesterone
internalization of stuff by endocytosis is mediated by - CORRECT
ANSWER endosomes
gene expression conventions graphs - CORRECT ANSWER asdf
what is derived from mesoderm? - CORRECT ANSWER heart, kidney and skeletal
muscle
the brain is derived from which germ layer - CORRECT ANSWER ectoderm
the variable regions of an antibody are - CORRECT ANSWER the ends of the fork
(=the variable parts of the light chain and heavy chain)
where in the male reproductive system do gametes become motile and and capable of
fertilization - CORRECT ANSWER epididymis
sperm is produced in the - CORRECT ANSWER semineferous tubules of the testes
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
One-Letter abbreviations of Amino Acids RNDQEW - CORRECT ANSWER R-
arginine, N-asparagine, D-aspartate, Q-Glutamine, E-glutamate, W-tryptophan
Side Chain pKas--DERHK - CORRECT ANSWER D(aspartate),E-glutamate--acidic
R(arginine)H-histidine-K-Leucine--Basic
Phosphoryl transfer from kinases comes from which phosphate? - CORRECT
ANSWER gamma phosphate
Venturi effect - CORRECT ANSWER The Venturi effect is the reduction in fluid
pressure that results when a fluid flows through a constricted section (or choke) of a pipe.
(oxygen pressure is the sum of the oxygen static pressure P and the oxygen flow pressure
(rho)v^2/2. In fluid dynamics, an incompressible fluid's velocity must increase as it passes
through a constriction in accord with the principle of mass continuity, while its static pressure
must decrease in accord with the principle of conservation of mechanical energy. Thus any
gain in kinetic energy a fluid may accrue due to its increased velocity through a constriction
is balanced by a drop in pressure.
Hendelson Hasselbach Equation - CORRECT ANSWER pH = pKa + ln(A-/HA)
solubility product constant expression - CORRECT ANSWER Ksp = ([A-])*([B+])
*note, these are the concentrations of ions that are present when the solution is completely
saturated
If one's min sound intensity is 20dB, and another's is 40dB, what is the ratio of the sound
intensities - CORRECT ANSWER 40db-20db=20db. 20db--> decimal log is 2. ratio of
hte sound intensities is 100
, I (in decibels) = 10log(I/Io) = 20log(P/Po) = 10log(P^2/Po^2)
pyrimidines are... - CORRECT ANSWER one ring. cytosine and thymine (and uracil)
purines - CORRECT ANSWER two rings. adenine and guanine.
ubiquitination leads to... - CORRECT ANSWER degradation by proteasome (not going
into lysosome)
surge in LH causes...(during menstruation) - CORRECT ANSWER increase in
progesterone
internalization of stuff by endocytosis is mediated by - CORRECT
ANSWER endosomes
gene expression conventions graphs - CORRECT ANSWER asdf
what is derived from mesoderm? - CORRECT ANSWER heart, kidney and skeletal
muscle
the brain is derived from which germ layer - CORRECT ANSWER ectoderm
the variable regions of an antibody are - CORRECT ANSWER the ends of the fork
(=the variable parts of the light chain and heavy chain)
where in the male reproductive system do gametes become motile and and capable of
fertilization - CORRECT ANSWER epididymis
sperm is produced in the - CORRECT ANSWER semineferous tubules of the testes
