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Unhybridized P Orbitals
How many unhybridized P orbitals are on the central N of azide (N3- ion)? The answer is 2 unhybridized orbitals to participate in 2 π bonds, but I can't seem to wrap my head around this. I understand...
View ArticleMemorizing Michaelis-Menten Help
So I've learned this a million times and understand it all perfectly each time I review it. Yet I still have trouble remembering the differences in all the competitive, noncompetitive, uncompetitive,...
View ArticleConfused about acetylcholine
Question was, "Which of the following is the primary neurotransmitter used by the parasympathetic nervous system" Answers: -acetylcholine -epinephrine -norepinephrine -dopamine I chose norepinephrine...
View ArticleNEXTSTEP DIAGNOSTIC QUESTION
Can someone explain the answer to this question please? Thanks Question 28) Which of the following properties explains why sound wave velocity increases as it travels from air to a liquid medium at the...
View ArticleEnzyme amino acid composition
I have a question for you biochem guys out there. I'm pretty good with AA's as of now, but I have one problem. I know that the interior of a protein in a water environment is hydrophobic, and the...
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Quick Question about viruses!
Do all viruses undergo replication through either the lytic or lysogenic cycle? Or is this specific to bacteriophages? I'm confused by this because HIV virus also enters the lysogenic cycle, but this...
View ArticleGen Chem Question
H2CO3 (aq) + H20 (l) --> H30+(aq) + HCO3- (aq) ; Ka 1 = 4.3 x 10^-7 HCO3- (aq) + H20 (l) --> H30+ (aq) + CO3 (aq) ; Ka2 = 4.8 x 10^-11 The question stem asks which of the following are equal, and...
View Articleloading dose and steady state question
Hi, if a drug with a 35 hour half life is taken on day 1 at .5 mg and then .375 on the days after when will a steady state occur, how do you get a ballpark figure, thanks.....
View ArticleAcetylcholine: Can it be used as a NT for the SNS to increase cardiac output?
EK 1001 has the following question following a passage about Starling's Laws (about Cardiac Output): While deriving his 3rd law, Starling needed to increase the cardiac heart rate and may have used...
View ArticleMenstrual Cycle/Ovarian Cycle question
So I have my A&P book which states that when the menstrual cycle begins and GnRH is release, both FSH and LH are made, THOUGH only FSH is secreted yet I read the total opposite in my review book...
View ArticleKaplan MCAT Behavioral Sciences Practice Question - Negative vs. Positive...
Hey guys, I'm reapplying this year and am retaking the MCAT! I bought the new 2015 Kaplan materials and am working my way through the Behavioral Sciences book now. From the Practice Questions section...
View ArticleIntuitive Sense in Understanding Electric Potential?
I am kind of having a little difficult time in understanding Electric Potential. I understand that (+) and (-) charges attract and thus want to decrease their potential energy as shown with a (-) sign...
View ArticleEquivalent Wt units used
If equivalent weight is given by taking the molar mass divided by n (# of particles produced), then why is the equivalent weight given in grams? Molar mass over n, which is unitless, gives you g/mol,...
View ArticleClausius Clapeyron on MCAT
Does anyone know if we need to have this equation memorized or if it is even something that the MCAT will cover? I looked through the AAMC's outline and didn't see it, but I wanted to make sure. Thanks!
View ArticleNeed Help Timing Passages
Hello my compassionate SDN peers, I am here to seek suggestions and tips on timing sections during the test. Do you time each passage or go by number of questions done in a given amount of time....
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Chirality question
Is it true that molecule B is achiral and molecule A is chiral? I thought both of the molecules are symmetrical and thus achiral, regardless of molecule B being cis while A is trans. also, for the...
View ArticleVery confused about blood pressure, resistance and Velocity
So This is what I understand. When radius decreases, pressure increases. Due to P = F/A and area decreases. When pressure increases, velocity decreases? I am confused as to why. Is it due to the fact...
View ArticlePhysics concept I am having trouble grasping (Fluids in motion).
It is stated that decreased pressure creates increased velocity. However, lets say we are increasing the area: Per Constant=(A)(V), an increase in area would decrease the velocity. then, per P=F/A, an...
View ArticlePCR quick question
Okay. This may be a really stupid question and I may be thinking to hard but for PCR, if you have a broken or impure sample of a DNA, doesn't that mean that it is not the whole DNA? As in, it is only a...
View ArticleKA: Social conflict theory in an historical context
I have a question on this KA passage: https://www.khanacademy.org/test-pr...cial-conflict-theory-in-an-historical-context It mentioned this before: Table 111 outlines the correlation between social...
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