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MCAT - AAMC - PRACTICE EXAM 1
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MCAT - AAMC - PRACTICE EXAM 1
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MCAT - AAMC - PRACTICE EXAM 1(speed of light in vacuum) ÷ (speed of light in medium) - How do you calculate the index
of refraction?
Refraction
n1(sinΘ1)=n2(sinΘ2) - What does Snell's Law define?
Electromagnetic radiation's photon energy is E=hf.
Intensity=power/area
Power= Work(energy)/time
Intensity= (energy)/(area)(time) - How is intensity related to electromagnetic radiation?
9L can be ignored in this scenario (was relevant in the passage).
200W = 200J/s
200J/s = (work)/(10*60s)
work = 120000J = 120kJ - What is the work generated by healthy adult who circulates
9L of blood through the brachial artery in 10 minutes, if the power is 200W?
hydrolysis: uses water to make two compounds.
AB --> A-H and B-OH
dehydration: synthesizes two molecules to one.
A-H + B-OH --> AB +H2O - What is the difference between hydrolysis and dehydration?
It is the paper. The movement of molecules is determined by polarity. If a molecule is
non-polar, then it moves more. Cellulose will bind more polar compounds.
For example, if hydrogen bonding is present, cellulose is more likely to bind that
compound - In paper chromatography, what is the stationary phase? (regarding
cellulose)
C. the total cross sectional area of capillaries exceeds that of arteries - Why is the
velocity of blood flow slower in capillaries than in arteries?
A. capillary walls are more elastic than arterial walls
B. Capillaries have less resistance to blow flow
C. the total cross sectional area of capillaries exceeds that of arteries
D. blood pressure is higher in the capillaries than in arteries
, - have six SIGMA bonds
- no lone pairs
- hybridization: sp3d2
- metals! like copper or iron - Describe an octahedral compound and it's characteristics.
C. Individual molecular volume and intermolecular forces are negligible
Notably, D refers to standard conditions; THERE'S A DIFFERENCE. - Which of the
following assumptions refers to an ideal gas?
A. the law PV=nR(T^2) is strictly obeyed
B. Intermolecular molecular forces are infinitely large
C. Individual molecular volume and intermolecular forces are negligible
D. One gram-mole occupies a volume of 22.4L at 25*C and one ATM pressure.
First - what does glycogen even look like? It's many glucose molecules that are
connected by BOTH a-1,4 and a-1,6 glycosidic bonds.
Second - a-1,4 bonds are adjacent to eachother
Third - a-1,6 bonds are parallel to eachother
If LB's are SPARSELY branched, there's less of them, so there are less a-1,6 bonds (D).
- Lafora disease is a fatal progressive epilepsy that is characterized by the formation of
deposits of sparsely branched, insoluble glycogen-like polymers called Lafora bodies
(LB)
Compared to normal glycogen, the amount of what type of bond is decreased in LB?
A. Phosphomonoester
B. Phosphodiester
C. a-1,4-Glycosidic bond
D. a-1,6-Glucosidic bond
B. 1/2
First, solve for i
--don't stop there!--
Second, solve for ratio of i/o - An object O is at a distance of three focal lengths from the
center of a convex lens. What is the ratio of the height of the image to the height of the
object?
A. 1/3
B. 1/2
C. 2/3
D. 3/2
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