Glycolysis and Pentose Pathway
Hey! I just want to verify a concept regarding metabolism. Does glycolysis and pentose phosphate pathway occur at the same time when there is surplus of glucose? Thank you.
View ArticleAAMC Bio Pack 1 Q#1
Hello, already starting to question my understanding of Biology with this question. The question states that "The sodium pump would be most active in cells with which of the following structures?" A)...
View ArticleNextStep FL NS 3 C/P #20
A student theorizes that the differences in ATP-to-ADP ratios between cells detected in the experiment could be due to variations in Y32 expression rather than differences in the cells’ metabolic...
View ArticleNextStep FL NS 3 C/P #36
The answer description states: "C is correct. The passage states that the cell is meant to act like a galvanic cell, meaning that it proceeds in a spontaneous fashion." Can someone possibly explain how...
View ArticleRate Constant and Polar solvents
Hello! In Kaplan Ch. 5, it says that polar solvents are favored because it increases the reaction rate. However, I am struggling to grasp the concept behind it. Is it because in polarized bonds the...
View ArticleWhy are cysteine, glycine and serine not ketogenic amino acids?
Cysteine, glycine and serine could be transaminated to become pyruvate which could then become acety-CoA. So, as acetyl-CoA could form ketone bodies, why are these amino acids not ketogenic amino acids...
View ArticleNextStep FL NS 3 B/BC #3
@NextStepTutor_2 @NextStepTutor_3 Hi, I just wanted to clarify that in the diagram in question three that: 1) Is it correct to deduce that the fetus has 3 bands which would indicate Trisomy X? 2) Would...
View ArticleNextStep FL NS 3 B/BC #13
Hi, C. the reduced ATP production of mdx mitochondria is caused by calcium dysregulation. D. the reduced ATP production of mdx mitochondria is not caused by the cellular conditions. The Table 1 shows...
View Article2017 MCAT
Is it really necessary to buy new study materials? I have the Princeton Review for the 2015 MCAT along with Exam Krackers books. I really would rather not buy new books as they are quite expensive.
View ArticleSection Bank: C/P Q51 (SPOILER ALERT!)
Ello, question 51 in the chemical/physics section bank kind of tripped me up. Hoping one of you kind souls could clarify why the correct answer is, well, correct! Below is the question (AND THE...
View ArticleSection Bank C/P 96 - Ternary Complex
The answer choice states that a ternary complex forms which is a protein complex with 3 different molecules bound together. Are the three molecules: ATP, Glycerol, and Glycerol Kinase? View attachment...
View ArticleAcidity of Haloacids
Why do haloacids acidity depend more on atomic radius than electronegativity? I know that the larger the atomic radius the more dispersed the negative charge is around the central atom. Is it because...
View ArticleSound Attenuation
From mcat-review: Sound attenuation is the gradual loss of intensity as sound travels through a medium. Sound attenuation is the greatest for soft, elastic, viscous, less dense material. Click to...
View ArticleRelationship between buoyancy force and specific gravity
Will someone please help me understand the relationship between buoyancy and specific gravity? I'm having a hard time with this for some reason. Thanks!
View ArticleTBR Fluids passage 1 #3
Good morning! I was wondering if someone could help me out with this problem. I understand why A2=25 A1 but I am still puzzled as to how they got x2=x1/25. Any help is appreciated. Thanks.
View ArticleEK Bio in class exam chapter 1 Q4
How do you interpret this chart? View attachment 212247 I'm not sure what the plus and minus signs mean. Also, question 4 states that each protein fragment was incubated antiflag antibodies only...
View Article*SPOILER* AAMC Chemistry Q Pack #12
The question asks for the max # of moles of NiCO3 in a precipitation reaction. There is 6.57 g pf NiSO4*6 H2O (MM=262.84) and 7.15g Na2CO3*10 H2O(MM=286.16) dissolved in water. The answer is 0.025 mol...
View ArticleQuestion about enthalpy of hydrogenation
"The greatest amount of energy is released by the oxidative cleavage of an alkene that is: A. unsubstituted B. Monosubstituted C. Disubstituted D. Trisubstitutted" Answer was A. I'm not sure why this...
View ArticleNMR in aldehyde
I was wondering if hydrogen b in this example would show up in the NMR as a quartet since it's experiencing a magnetic field from the spin of the aldehyde H and the neighboring c hydrogen View...
View ArticleEffects of pH on substitution reactions?
Hey, SDNers! I needed help with some Sn1 and Sn2 concepts. How would the changes in pH influence the rate of Sn2 and Sn1 reactions? Thanks in advance for the help!
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