C/P trouble

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sdrmi11

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I just took my first FL AAMC test (have done 2 kaplan) and I was very overwhelmed by how hard the c/p section is. I have always struggled with physics and chemistry in undergrad and am afraid that I wont be able to improve before my exam on 5/24. How can i get at least a 3 point improvement in a week? What resources should i use? Any advice on high yield topics to learn? PLEASE HELP

Kaplan FL1 (2 months ago), 493 (121, 127, 122, 123)
Kaplan FL2 (1 month ago), 495 (122, 126, 121, 126)
AAMC FL3 (today), 505 (122, 128, 126, 129)
 
I just went through the AAMC's "What's on the MCAT?" web pages and wrote down any formulas that were mentioned.

Maybe someone has made a cheat sheet?
 
I just went through the AAMC's "What's on the MCAT?" web pages and wrote down any formulas that were mentioned.

Maybe someone has made a cheat sheet?

I'd be interested in seeing that as well b/c at this point I feel I am memorizing too many formulas and they are starting to run together
 
Never just memorize formulas for C/P. It's a waste of time. Understand what they're asking and the units. If you know the units you can solve almost any question. The mcat will trick you. They'll put extra variables in their question stem or passage. If you know the units on joules, watts, newtons, etc you'll be golden. You see straight through the extra variables. Believe me, there will be answers that include all variables and it will be tempting. If you know the units, the correct answer will be blatantly obvious. The mcat isn't too physics heavy anymore. Relate it to the body. Your principles are important. I think I had a couple questions on different principles of general chemistry and physics. I had 2 physics passages and a few discretes. Overall, I had maybe ~13 physics questions. Some I would argue are actually chemistry, but not according to the AAMC. Also, convert to scientific notation every time. Know logs and natural logs. If you divide by natural log and you get e^3 the answer is going be be somewhere between 8 and 27. Rarely will the mcat trick you here. They don't expect you to do that in your head, but they do expect you the be able to reason. Eh and free body diagrams are pretty important too. Just understanding newton's laws.

For chemistry, you have to understand your amino acids backwards and forwards. Not just the structure. What is the pKa of the side chain? What will happen at physiological pH? Which are charged? Which are polar? Which are non polar? The acronym I use is GALVIM (non-polar aliphatic), PFW (non-polar... some aromatic), NSTYQC (polar uncharged), DERKH (polar charged). Of the charged, at physiological pH RKH will be positively charged. DE will be negatively charged. Think about active site interactions. At physiological pH, which amino acid in the ligand would likely interact with an active site that is rich in Lysines? Well, it's probably gonna be aspartic or glutamate. I'd say it's worth knowing basic principles of gen chem like periodic table trends, what each quantum number means, nuclear chemistry, where each type of radiation falls on the UV VIS spectrum and their relative wavelengths/frequencies. Know your carbohydrates and the bond interactions, understand naming of compounds and counting of carbons. I feel like there's so much to understand that I can't write everything. Those are just some of the things I can recall right away off the top of my head. Not a ton of orgo. I had one question that had two compounds, and then the our answer choices were all 6 step mechanisms. I laughed and just picked an answer. I don't have time for a 6 step mechanism on test day. Neither do you or anyone else. It's just there to throw you off and mess up your timing.

Best of luck in studying! If you wanna chat about more stuff you can PM me.
 
I don't think it is safe to assume H is positively charged at physiological pH. Though there are sources that site both (and technically some percentage would remain protonated), most of the AAMC questions I have encountered consider it to be neutral at physiologic pH.
 
I agree with this. I even originally had written "sometimes Histidine, but that's arguable based on your source." I decided to just include it in positive because that's how I learned it in my biochem class. Well, we learned it would be positive sometimes. Over 11 practice exams and 6 months of studying I never saw anyone use histidine when they wanted you to know an active site was positive. They always used K or R. So, you can forget about H under definitely positive.
 
I know the amino acids. I definitely need to memorize physics formulas, is there anywhere that has them all in one spot?
on google search mcat physics cheat sheet. there you will find all the equations. but i have the same issue. i will know some of the formulas really well but then not others and then its about being able to manipulate between them that i suck at.
 
Sorry to bump this old thread, I'm a non trad and getting back into taking some pre reqs. Someone mentioned memorizing amino acid structures is this a must? or should we know more the names of all the amino acids?
 
Sorry to bump this old thread, I'm a non trad and getting back into taking some pre reqs. Someone mentioned memorizing amino acid structures is this a must? or should we know more the names of all the amino acids?

You should know the names and structures of amino acids. Often times you will get a passage that has a protein sequence given by only its 3 letter code. It will follow up by saying if “xyz” amino acid is replaced with “abc” amino what will be the consequence. Or it will ask which amino acid will likely cause no change in the function of the protein. Knowing the pKa of the side chains and their structures will help you determine this since many interactions take place at the side chain. Hope this helps clear it up!
 
You should know the names and structures of amino acids. Often times you will get a passage that has a protein sequence given by only its 3 letter code. It will follow up by saying if “xyz” amino acid is replaced with “abc” amino what will be the consequence. Or it will ask which amino acid will likely cause no change in the function of the protein. Knowing the pKa of the side chains and their structures will help you determine this since many interactions take place at the side chain. Hope this helps clear it up!
Thanks!
 
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