AAMC #7 BS Final passage

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EnginrTheFuture

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Can anyone care to explain to me what the hell is going on in experiment 3. Both on the exam and during this review sesh, I have read, re-read, and triple read this data and still cannot decipher WTF is going on.

I definitely cannot answer this question without having a clue as to what experiment three is doing.
 
The figure key tells you that the colored in circles = gut differentiation and the white circles = no gut differentiation.

Only the P2+EMS shows 100% gut differentiation so you expect that P2+EMS is necessary for gut differentiation.
 
Ahoy there, I put the same answer as you (though I didn't strike out the first one).

MedPR: AB2+EMS resulted in cells, so P2 isn't absolutely necessary which is why I put B. Then again, it didn't for the last choice either...so I really dunno.
 
Ahoy there, I put the same answer as you (though I didn't strike out the first one).

MedPR: AB2+EMS resulted in cells, so P2 isn't absolutely necessary which is why I put B. Then again, it didn't for the last choice either...so I really dunno.

AB1 + EMS has the exact same result as EMS cells on their own, which means that AB1+EMS is not the answer. The combination of cells in the other two answers are not mentioned at all, so they also cannot be correct.

I agree that it looks as if P2 isn't absolutely necessary since EMS will differentiate on its own, but P2 + EMS is still the only justifiable answer.
 
Well the thing is, I don't expect that "P2 and EMS are necessary for communication" based off of this plot. I don't see how it is justifiable that one can tell that these are the cells that communicate. What is this experiment doing to accomplish this conclusion? How is seeing that P2 and EMS differentiate no matter what related to communication at all?

Sure I incubate these cells for 0 minutes and the P2/EMS cells differentiate, the others don't. That's fantastic but what does that tell me... It tells me that they differentiate fastest in my opinion. I feel like I am missing something?
 
Well the thing is, I don't expect that "P2 and EMS are necessary for communication" based off of this plot. I don't see how it is justifiable that one can tell that these are the cells that communicate. What is this experiment doing to accomplish this conclusion? How is seeing that P2 and EMS differentiate no matter what related to communication at all?

Sure I incubate these cells for 0 minutes and the P2/EMS cells differentiate, the others don't. That's fantastic but what does that tell me... It tells me that they differentiate fastest in my opinion. I feel like I am missing something?

Yes, you can make the argument that the given information allows you to choose the P2/EMS answer with 100% certainty, but how can you justify answers B, C, or D any better than A?

P2/EMS is the only combination shown that produces different results from the others. Even if you don't understand why or how, you can pick it because it is different than the other answers.
 
Yes, you can make the argument that the given information allows you to choose the P2/EMS answer with 100% certainty, but how can you justify answers B, C, or D any better than A?

P2/EMS is the only combination shown that produces different results from the others. Even if you don't understand why or how, you can pick it because it is different than the other answers.

Oh how I love this test 😀
 
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