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C/P AAMC FL 3 - Q15

May 14, 2018, 11:32 am
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Hello all -

Just a chemistry question I'd like some help with from the AAMC FL 3 test. I tried googling it, but it is such a specific scenario I can't seem to find the right explanation I'm looking for.

[​IMG]

For how I've always understood it, I thought Group 12 elements preferred half-filled d subshells so that they could pair up vs a full-filled d subshell with single...

C/P AAMC FL 3 - Q15
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NS FL 2 CP #51

May 14, 2018, 9:56 pm
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How on earth to calculate (0.95)^10?

I got this wrong because I had no idea what they were even asking, but I do know that since 0.95 < 1, that it will decrease each time so I can cross out D.
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Speed of sound question

May 15, 2018, 9:14 am
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What does this mean?

"sound travels faster in medium that is more resistant to compression."
"sound travels slower in medium with greater density."

Aren't those two contradicting each other because a medium that is more resistant to compression (like a solid) would also have greater density (solids have more density than liquids or gases)??
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BB passage comprehension help.

May 15, 2018, 6:35 pm
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Anyone have advice for the passages for BB? I find them very difficult to comprehend even. There's just so much messy information thrown at you, many acronyms and terms, and the graphs/charts have extremely odd variables for the axes.

These are just some examples of the passages - I just see an overwhelming mass of confusing information.

How do you guys approach these passages? Considering we are timed, it's really an issue for me having to take so long to barely understand it. How can I...

BB passage comprehension help.
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MCAT dates and application deadlines.

May 15, 2018, 9:41 pm
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Hi,
I have just talked to one of the Princeton advisors and she told me since you are writing you MCAT on August, the chances of getting into US schools are super low so its better for you not to apply this year and wait for the next cycle. Is that true? is it the same for all the US schools?
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Khan Academy videos over reading?

May 16, 2018, 10:29 am
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I'm struggling to get through the readings in the review books (ExamKrackers) since it's boring. Also I find I do not learn as well from just reading and do better if it is taught outloud in a lecture. I know Khan Academy offers MCAT review videos and was wondering if just watching those and supplementing with the books if I don't understand the material would be just as effective as the readings.
Does Khan academy cover enough important info that is on the exam?
My MCAT date is June 1st so...

Khan Academy videos over reading?
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EK 101 BIOMOLECULES Test 2A PASSAGE 1 #4 *SPOILER*

May 16, 2018, 11:26 am
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Hi.

The passage stated that Aurora A is important for formation of bipolar mitotic spindles. The question asked which phase of mitosis would be affected if there is a decrease of Aurora A expression. I choose prophase, however, their correct answer was anaphase? Can anyone explain? I'm thinking it is a typo, as the itotic spindles begin to form /appear in mitosis. Thanks!
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The best full length tests

May 16, 2018, 2:49 pm
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Hey everyone

I have not started doing full lengths but I will soon.

How many Full Lengths do you think I should squeeze in before my Exam (August hopefully)?

Also, I know AAMC has a couple of full length exams but where else would I be able to purchase more full lengths realistic to the MCAT exam (Heard KAPLAN isnt the best lol)

Thanks!
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[spoiler]Physics QBANK#74 (work, pulley)

May 16, 2018, 7:00 pm
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For this question....
So I get the solution (kind of). Yes, we're using pulleys so maybe we use less force, but that force is just applied over a larger distance so that in the end, total work done is the same.

BUT this is how I thought of it ... would really appreciate it if someone could tell me where exactly my flaw in thinking is:

I wanted to try to find the y component of the force because I knew that component would equal 40N if I assumed the the mass would be lifted at a constant...

Physics QBANK#74 (work, pulley)
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Does SDS PAGE break up protein polymers under nonreducing conditions?

May 16, 2018, 10:55 pm
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I thought it didnt but from the section bank, in one problem they seem to think that it does. Does anyone know for sure?
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FLUIDS: Understanding Buoyancy Question

May 17, 2018, 7:30 am
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Hi,

So, I know that if an object if floating, then
density object x Volume of the object x gravity = density of the fluid x volume submerged x gravity

g cancels out, we're left with:

density of the object x volume of the object = density of the fluid x volume submerged

by re-arranging, we get a ratio:
density of the object/density of the fluid = volume submerged/volume of the object

This makes sense to me. Now, if two balls of equal volume are completely submerged in water, BUT...

FLUIDS: Understanding Buoyancy Question
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AAMC FL1 P/S #21 Help please

December 29, 2018, 8:35 am
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This is my reasoning, please help me find where I went wrong:

A seemed likely using common sense, I know there are ethics committees for research and I didn't feel they would agree doing studies on people with psychological issues.

B did not make sense at all: how would assigning anxious participants to stress condition pose a confounding variable?

my understanding of confounding variable: something that influences the relationship between independent and dependent variable, when its...

AAMC FL1 P/S #21 Help please
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psy cognitive behavioral therapy

December 30, 2018, 4:43 pm
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I have seen this come up on several question stems, can someone tell me the objectives of this type of therapy?
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AAMC 9CBT #47 (Physics)

January 1, 2019, 8:51 pm
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Visible light travels more slowly through an optically dense medium than through a vacuum. A possible explanation for this could be that the light:

A. is absorbed and re-emitted by the atomic structure of the optically dense medium.
B. loses amplitude as it passes through the optically dense medium.

Answer is: A


The explanation is that both answers are "true" but only one (in white) directly answers the question. I don't understand how the wrong answer...

AAMC 9CBT #47 (Physics)
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MCAT Snell Law

January 1, 2019, 9:00 pm
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I got the question right but I am not sure the specifics of why I would choose this answer. It was more of a gut response.


At what incident angle (θi) does a ray have to first hit the collection face to end up traveling directly up the fiber (up the page in Figure 1)?


A. 0° Correct Answer

B. 45°

C. 60°

D. 90°

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Physics Q pack #82

January 2, 2019, 4:17 pm
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I was reviewing this problem, and I'm getting confused about what theta is in the equation for W=Fxcostheta

I know it says that theta in this case for the Force of friction and displacement is 180 degrees, but I thought that the angle of the incline corresponded to the angle used in the equation.

If it had asked for the work done by gravity with an increase in the angle of the incline, would it increase? Because the force due to gravity on an incline is

F = mgsin theta, where theta is in...

Physics Q pack #82
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Question on AAMC Practice full length 1 B/B #32

January 2, 2019, 6:42 pm
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Can someone explain why B can't be the answer. My reasoning was that in the passage, above equation 1, it states that ornithine is an AMINO ACID that is found in cells but NOT INCORPORTATED INTO PROTEINS. I've studied translation a lot and know that for amino acids to be brought in for the corresponding mRNA, codons have to be available. since ornithine is an AMINO ACID, there must be a codon available corresponding to it. So I ruled out A. = how can ornithine be an AA if theres no codon for...

Question on AAMC Practice full length 1 B/B #32
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Section Bank C/P #73. Possible mistake?

January 6, 2019, 12:44 pm
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So I got the question right, but I think I have been messed up with the concept of millimoles since like AP Chem from years ago. The solution states that

'10 mM of MgCl2' indicates that there are 10^-2 moles per liter. Is this is a mistake on AAMC's part because shouldn't it be 10^-3? Or am I missing something.

For some reason, something from AP Chem is kicking in that's saying that milli means 10^-3 with the exception of millimoles that are 10^-2
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Poiseuille's principle vs flow rate continuity equation

January 8, 2019, 4:29 pm
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I'm confused with how according to the poiseuille's equation as you increase the radius the flow rate also increases, but according to Q = A1v1 = A2v2 the avg speed and area on each side should be inverse


Maybe I'm misunderstanding the difference between Q and v? Or does poiseuille's not apply when the area of the pipe changes?
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Different Versions of Poiseuille's Law?

January 13, 2019, 10:41 pm
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In my studying I came across a different version of Poiseuille's Law than I'm used to seeing.

While I am used to seeing it in this form:



I just saw a problem easily solved by using the form below, which is showing a "resistance to flow" value 'R' rather than a flow rate 'Q':


How can one of them...

Different Versions of Poiseuille's Law?
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