(Answered)AAMC MCAT OFFICIAL PREP SAMPLE(Questions and answers)
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Nursing
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Heritage School, Muldersdrift, Gauteng
(Answered)AAMC MCAT OFFICIAL PREP SAMPLE(Questions and answers)
(Answered)AAMC MCAT OFFICIAL PREP SAMPLE(Questions and answers)
(Answered)AAMC MCAT OFFICIAL PREP SAMPLE(Questions and answers)
(Answered)AAMC MCAT OFFICIAL PREP SAMPLE(Questions and answers)
(Answered)AAMC MCAT OFFICIAL PREP SAMPL...
answeredaamc mcat official prep samplequestions and answers
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AAMC MCAT OFFICIAL PREP
SAMPLE
Which image best illustrates electric field lines between the inside of an axon and its
surrounding extracellular fluid?
o -Electric field lines exit from (+) and enter (-). The axon is negatively charged;
extracellular solution has ZERO net potential
Which of these ions are the smallest in size?
o Sodium
o Potassium
o Chloride
- Sodium b/c it is a cation so Na+ loses an electron. Bigger than K+ due to periodic
trend, and Cl- since it's an anion (Na+ --> Neon, minus 1 proton)
What information about an axon is required to calculate the current associated with an NCV
pulse?
o Conductivity, resistivity, and length
o B.Potential, conductivity, and radius
o C.Potential, resistivity, and radius
o D.Potential, resistance per unit length, and length
- D- I= V/R, to calculate R (resistance), one needs to know the length and cross-
sectional area (resistance per unit length)
Squalene is produced in the human body as a precursor to which important class of
compounds?
o Triacyl glycerols
o Phospholipids
o Steroid hormones
o Prostaglandins
- Steroid hormones
- -fused ring system is similar in structure to cholesterol and all steroid hormones
What is the concentration of Cl- ions in a 0.1 M solution of calcium chloride?
o 0.02 M
o 0.05 M
o 0.10 M
o 0.20 M
, - 0.20M b/c the formula is CaCl2, so there are twice as many Cl- ions as Calcium->
(0.1M)*2= 0.20M
Hemiacetal Functional Group
o -Ring-opening can occur here
o -Reducing sugars
The y-intercept of a Lineweaver-Burk plot is equivalent to?
o 1/Vmax
What is a Reducing Agent?
- loses electrons and is oxidized in a chemical reaction
NADPH + H+ + O2 + RH -> NADP+ + H2O + ROH
In this reaction, NADPH functions as...
o oxidizing agent
o reducing agent
o catalyst
o electrophile
- B: reducing agent
- NADPH is acting as a hydride transfer agent which reduce oxygen
- NADPH loses electrons and is oxidized so it serves as a reducing agent
When is equilibrium reached for air pressure?
o When the sum of inside air pressure + liquid air pressure= outside air pressure
The average human body contains approximately 5 liters of blood. If the blood has a density of
1060 kg/m3, what is the total mass of blood in the average human? (Note: 1 L = 1000 cm3.)
o 0.212 kg
o 0.530 kg
o 5.30 kg
o 10.6 kg
- 5.30 kg
- m = ρV = 1060 kg/m3 × 5 L × 1000 cm3/L × 1 m3/106 cm3 = 5.30 kg.
- Recall that 1m= 100cm, so 1m^3= 1 x 10^6 cm^3), by taking 100 -> 1x 10^2
CUBED*
What is the Doppler effect?
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