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AAMC Bio Flashcard
I was doing some of the MCAT Biology AAMC Flashcards and came across this one. This isn't so much of a question about the question, rather a question about their argument for why D is incorrect. My...
View ArticleMetabolism during prolonged fasting
Hi, during prolonged fasting gluconeogensis is upregulated whereas glycolysis is downregulated. Why would glycolysis be down regulated during a prolonged fasting state if the body is in need of energy...
View ArticleWhy doesn't atmospheric pressure affect vapor pressure?
Hey guys, so Berkeley Review book says that atmospheric pressure affects boiling point but not vapor pressure. From what I understand, vapor pressure (using water as the example) is the pressure...
View ArticleBerkeley Review Details
In Berkeley Review it uses the statement, "Consequently, if we utilize the malate-aspartate shuttle, the 2 NADHs from glycosis will give us 6 ATPs while the 8 NADHs from the Krebs Cycle will give us 24...
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Can someone please explain (with calculations) this guyton and hall...
For the life of me, I cannot figure out the calculation to solve these two problems. Would have been nice if they actually written them out in their answer key! Thank you!!
View ArticleWhat relation, if any, exists between height and erectile dysfunction?
I understand that height is associated with better cardiovascular health in some studies. Does this imply lower incidence of ED among taller men? Thanks!
View ArticleMetaphase in mitosis v meiosis I?
This question is taken from Kaplan 2015 Biology, Chapter 2, practice question 11. Which of the following statements correctly identifies a key difference between mitosis and meiosis? A. In metaphase of...
View ArticleAcid base reasoning
Part of a question I did involved comparing the acidity of NH4+ vs. HF. I reasoned that: NH4+ -----> yields a conjugate base: NH3 HF-------> yields a conjugate base: F- Based on the fact that F-...
View ArticleFluid Pressure increase or decrease with increasing cross-sectional Area?
https://www.reddit.com/r/Mcat/search?q=flair_name%3A%22Question%20%F0%9F%A4%94%F0%9F%A4%94%22&restrict_sr=1 Hi everyone. Blood pressure increases by vasoconstriction(narrowing blood vessels). But...
View ArticleAAMC MCAT Official Prep Section Bank
Does anyone know how to get this working again after resetting it? I reset the section bank and can't seem to get it to work. I have called the store (no answer) and even sent them screen shots, and...
View ArticleAAMC Official guide BB Q clarification
In contrast to the conventional thought that prokaryotic transcription and translation are coupled, scientists have observed the intracellular localization of mRNA in Escherichia coli. The locations of...
View ArticleATP and myosin binding site and myosin head
Which steps involved in the contraction of a skeletal muscle require binding and/or hydrolysis of ATP? Dissociation of myosin head from actin filament Attachment of myosin head to actin filament...
View ArticleConfusion on electron withdrawing and donating effects of alkoxy, amide,...
According to this picture from uworld, the OR portion of an ester is considered electron withdrawing, and the nitrogen portion of an amide is considered electron donating. I suppose I can see how, in...
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Difference between arteries and veins
What are the structural and functional differences between arteries and veins? Do veins have smooth muscle? If so, is it less than the smooth muscle that arteries have? I know that arterie smooth...
View ArticleConfusion about titration of polyprotic acids
There was a question in uworld that presented a picture of a polyprotic acid titration curve. It showed the titration of H3PO4 by NaOH. According to this curve: At the first equivalence point: [H2PO4...
View ArticleHow is this reaction spontaneous?
Here is a problem from Kaplan: At 25 degrees C, the delta G naught for a certain reaction A < - -> B + 2C is 0. If the concentration of A, B, and C in the cell at 25 degrees C are all 10 mM, how...
View ArticleMCAT-Hydropathy index
Hello everyone, I came across an AAMC question pertaining to the concept of the hydropathy index, yet it is nowhere specifically stated in the AAMC content guide. Without coming across it in a...
View ArticleMCAT-What is the effect of an uncompetitive inhibitor on Kcat?
I know that an uncompetitive inhibitor (UCI) decreases both Km and Vmax, as it binds allosterically and to either E or ES Kcat is defined as the catalytic turnover rate of the enzyme = # products...
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