AAMC The Official MCAT Practice Question #2 biochem section
Which steps involved in the contraction of a skeletal muscle require binding and/or hydrolysis of ATP? I. Dissociation of myosin head from actin filament II. Attachment of myosin head to actin filament...
View ArticleWhats the difference between a retrospective cohort and case control ???
Whats the difference between a retrospective cohort and case control ??? Can anyone help? Thank you very much
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Oxidation States
What are the oxidation states of Atom A and Atom B in the molecule below? A 0, -1 B -1, 0 C -1, -1 D 0, 0 This question is taken from mcatquestion.com. I just don't understand why the answer is C. The...
View ArticleRate-limiting step of TCA
I am confused because my biochemistry notes say that citrate synthase is the rate limiting step and the kaplan book says that isocitrate dehydrogenase is the rate limiting step of the TCA. Which one is...
View ArticleTBR Question about the effect of temp on O2 binding to hemoglobin
Quick question about the effect of temperature on oxygen hemoglobin affinity. The question asks, if the temperature is increased, which of the following are true: 1. A rise in temperature requires a...
View ArticleOxidative phosphorylation and electrochemical gradient
Complex I results in oxidation of NADH to NAD+ and two electrons flow from the mitochondria matrix to the complex that is embedded in the inner membrane of the mitochondria. I am trying to find an...
View ArticleTBR General Chemistry Section III Equilibrium, Example 3.14
If the following reaction represents a system at equilibrium, indicate which statement is NOT true. PCl3(g) + Cl2(g) <------> PCl5(g) A) Increasing the pressure would cause a decrease in PCl3 B)...
View ArticleElectric Potential (V)
Why does the Electric potential (V) decrease as one moves in the direction go the electric field? I know that V=Ed
View ArticleMath
A friend of mine just told me that there are no calculators allowed on the MCAT. So my question is how much math is on the MCAT that would require complex calculations done by hand? I just bought my...
View ArticleDiscriminating optical rotations?
From TBR Orgo Ch.2 phase 1 question 8: How can a compound with an optical rotation of +233.0 be discerned from a compound with an optical rotation of -127.0? A. The intensity of light is greater with...
View ArticleKaplan strategy
I just bought the Kaplan 7 book series. A professor of mine told me there is a certain "recipe" for using Kaplan. I've searched for this strategy but I can't find it. Am I missing something? Also, I...
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Cell Cycle, What does the inverted T means here.
So, i am being lost as to what the inverted T means here? Does it mean that the gene is already knocked out? or that by increase HPS40 you will get less Purivate Kinase activity or less Transcription...
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cAMP and ATP
So, EK actually says cAMP is made when ATP levels are low. Which is not ringing home!! Don't you need ATP to make CAMP? or doesnt Adenyl Cyclase convert ATP to CAMP? if so wouldnt a decrease in ATP...
View ArticleAAMC 5 #14...helpppp
According to Equation 1, the concentration of the polymer with respect to [HPO42–] is: A) n[HPO42–]. B) n2[HPO42–]. C) (1/n)[HPO42–]. D)...
View ArticleDifficult CARS Passage
When I read this passage, I literally could not understand anything that it said or any of the questions. If anyone has any tips on how to read this passage effectively or do any of the questions (I...
View ArticleSection Bank C/P Question 11
The question asks for the focal length of the lens. All parallel lines going through converging lens should pass through focal point, and light from a single source going through converging lens...
View ArticleTBR Biology Section VII confusion: Oxalosuccinate (TCA metabolite) - alpha or...
The TL;DR version is in bold. Thanks! ISSUE 1: According to the TBR Biology part 2 book (section 7 - Metabolic Pathways; p. 195 in the newest edition - copyrighted 2016), oxalosuccinate is a beta-keto...
View ArticleGen Chem TBR solubility
Please see the image attached. I understand why A and B can't be the answer. But I'm having a hard time convincing why D can't be the answer. Why are they in a linear relationship? Any help would be...
View ArticleFatty acid oxidation of an odd number
If we had a 17 carbon fatty acid we would get 8 acetyl coa that would follow 7 rounds of beta oxidation + 1 propionyl coa Each round of oxidation yields 1 NADH and 1FADH2 (4ATP/round) => 4*7 rounds...
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