AAMC 10, help with six of the questions?

[dancerdoc89]

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I have a lengthy list of questions from AAMC 10 that I would like to have clarified...I would really appreciate it. Some of my questions require the passage, so if you have your exam handy that would be awesome...if not, don't sweat it...this is one of my last-minute reviews...plus I didn't provide the questions, just my flustered explanations that apparently weren't enough to get these questions right.

Ok...

PS #20
The actual projectile flight described in the passage encompasses from when the projectile was propelled straight upward until it reached height h. It talked nothing about the projectile coming back down. This is why I chose that the frequency shift falls only (D). Of course, if the projectile came down from height h, the frequency shift would increase again (A).


PS #41
I said, “Yes, because the volume of the monolayer can be determined” (B). Since when is the structure of water not cylindrical in shape? Oriented vertically, I think H2O appears cylindrical…how were we supposed to know this?


BS #97
If DDT accumulates in the liver, all liver processes will be affected. Why is regulation of blood pressure not affected (D)? The liver makes many globular proteins (i.e. albumin) that majorly contribute to the osmotic pressure in the blood...?? 😕



BS #137
First, when we see “membrane potential,” do we think, “resting membrane potential” or just a potential at a given instance? Second, how do we know which channel (sodium or potassium) is linked to the adrenergic drug? To go from -60mV to -70mV, either the cell loses potassium in order to further repolarize (or hyperpolarize) right after an AP is generated. Or, to make the same potential change, the cell loses sodium via Na/K-ATPase to restore the ion gradients. So, how did you pick which channel it would be?


BS #142
Doesn’t the skeletal system protect against internal injury, not the skin (D)? Also, I believe the skin respires to a degree…it definitely needs oxygen. Your skin can “suffocate” if you cover it with something impermeable to gases...apparently (B) is incorrect...?


VR #86
Wallis’s group studied astronomy. Astrology requires the understanding of celestial bodies and their movements and whatnot, so why couldn’t the study of astronomy contribute to astrology, and therefore be presented at Wallis's group (B)? As a side note, both realms were actually one and the same during that time period…am I looking too deep?


...sorry for the intense, critical analysis, but I would appreciate another perspective on these questions. Thanks for all your help 👍

 

[raffster2]

I have a lengthy list of questions from AAMC 10 that I would like to have clarified...I would really appreciate it. Some of my questions require the passage, so if you have your exam handy that would be awesome...if not, don't sweat it...this is one of my last-minute reviews...plus I didn't provide the questions, just my flustered explanations that apparently weren't enough to get these questions right.

Ok...

PS #20
The actual projectile flight described in the passage encompasses from when the projectile was propelled straight upward until it reached height h. It talked nothing about the projectile coming back down. This is why I chose that the frequency shift falls only (D). Of course, if the projectile came down from height h, the frequency shift would increase again (A).


PS #41
I said, “Yes, because the volume of the monolayer can be determined” (B). Since when is the structure of water not cylindrical in shape? Oriented vertically, I think H2O appears cylindrical…how were we supposed to know this?


BS #97
If DDT accumulates in the liver, all liver processes will be affected. Why is regulation of blood pressure not affected (D)? The liver makes many globular proteins (i.e. albumin) that majorly contribute to the osmotic pressure in the blood...?? 😕



BS #137
First, when we see “membrane potential,” do we think, “resting membrane potential” or just a potential at a given instance? Second, how do we know which channel (sodium or potassium) is linked to the adrenergic drug? To go from -60mV to -70mV, either the cell loses potassium in order to further repolarize (or hyperpolarize) right after an AP is generated. Or, to make the same potential change, the cell loses sodium via Na/K-ATPase to restore the ion gradients. So, how did you pick which channel it would be?


BS #142
Doesn’t the skeletal system protect against internal injury, not the skin (D)? Also, I believe the skin respires to a degree…it definitely needs oxygen. Your skin can “suffocate” if you cover it with something impermeable to gases...apparently (B) is incorrect...?


VR #86
Wallis’s group studied astronomy. Astrology requires the understanding of celestial bodies and their movements and whatnot, so why couldn’t the study of astronomy contribute to astrology, and therefore be presented at Wallis's group (B)? As a side note, both realms were actually one and the same during that time period…am I looking too deep?


...sorry for the intense, critical analysis, but I would appreciate another perspective on these questions. Thanks for all your help 👍

For number 20, I did the same thing as you did, and I just hope that the real test will be more clear.

For 41, the actual structure of an H2O molecule is not cylindrical, it is bent. The structure of a fatty acid is cylindrical. The question didn't mean the shape that it takes in a container.

For 97, three of the four choices are affected DIRECTLY by the liver and nothing else. There are other mechanisms for blood pressure regulation, so that was the best answer. Liver makes bile, which allows digestion of fats, and it it detoxifies chemicals.

For 137, it assumes that the resting potential is -60, and it was changed to -70. This makes the inside more negative, which is either caused by efflux of Na or K. Since the concentration gradient at any given point during resting potential would make Na go inside the cell and K go out of the cell, it must have been a malfunction with K channel, because a malfunction with an Na channel would probably cause Na to go into the cell, and depolarize it.

For 142, I think you over-thought it. If you didn't have any skin, your entire body would be much more susceptible to internal injury, so respiration would again be the best answer.

For 86, I think you are bringing too much outside information in that you can't deduce from the passage.

I hope this helps.