How the fuke is this a diastereomer?
Kaplan Home Review Organic Chemistry Ch. 2 Discrete Practice Questions: 9. Consider (E)-2-butene and (Z)-2-butene. This is a pair of what type(s) of isomers? I. Cis-trans isomers II. Diastereomers III....
View ArticleBoiling point comparison between of H2S, H2Se, H2Te
So the actual trend here is H2S<H2Se<H2Te. What I dont understant is that H2S has the strongest dipole dipole interaction and since dipole-dipole interaction is stronger than dispersion force,...
View ArticleConfused about ultrasounds...
Hello all, I know that waves that leave an ultrasound probe come back after interacting with dense media like bone at a faster/higher velocity. However, I don't understand why this is. I thought...
View ArticleSimple Inclined Plane Question.
Sorry to bother with this stupid question, but I was hoping for some clarification. Problem: A box starts from rest and slides down 40m down a frictionless inclined plane. The total vertical...
View ArticleMCAT Studying along with Classes
Hello, I am in a combined BS/MD program and we are required to take the MCAT by april of the upcoming 2016 year. I need to get a minimum score of 504 with no less than 126 per section, and was...
View ArticleNucleoside Triphosphates
My biochemistry textbook states that CTP, GTP and UTP are equivalents of ATP. 1. I am wondering why TTP is not the case? I tried to look this up and it seems that TTP doesn't exist - Can someone...
View ArticleWork-Energy Theorem Concept Confusion
Hey, so I understand that Wapplied - W nonconservative = Energy final - Energy initial. However, shouldn't the final energy be less than the initial energy because energy is lost in the form of heat?...
View Articlediprotic titrations
Question out of TBR For which of these titrations is the pH at equivalence the same, regardless of concentration? A- the titration of a weak acid by a weak base B- The titration of a strong acid by a...
View ArticleCentripetal Force
A 20kg child sits on a swing with ropes 2 m long. The maximum speed during each swing is 4 m/s with an arc of 135°. What is the maximum tension in the swing? The answer states that Fc + Fg = T but...
View ArticleLight and Electromagnetic Wave Question
Hello all, First off, happy holidays! I'm having some trouble visualizing what electromagnetic radiation is. If all electrons are constantly vibrating around the nucleus and have rotational...
View ArticleUrea Treatment - A Kidney Question
Quick why question. From most sources, urea is reabsorbed from the tubule at around 40-60%. I am a little unclear on the biological significance of re-absorbing Urea since it is just a breakdown...
View ArticleWhy does light travel slower in glass vs. air?
According to Exam Krackers, the velocity of a wave in a solid > v in water > v in air. But then a few pages later it shows that the index of refraction of glass is higher than air, which means...
View Articlepolarity of ketone vs alcohol?
Why is cyclohex-2-enol more polar than cyclohex-2-enone? I thought the carbonyl C=O bond was pretty polar, resulting in a delta-+ charge on the C? So I don't understand why the alcohol cyclohex-2-enol...
View ArticleNeural Cell Development
So I was doing some practice questions and one of them asked whether Microglia, which I thought was a part of the nervous system, came from ecto, meso, or endoderm. I thought it would be ectoderm since...
View ArticleKinase work in multiple directions?
Here's my example, pertaining to Glycolysis: Phosphofructokinase adds a phosphate group to the intermediary sugar, but Pyruvate Kinase removes a phosphate group from the intermediary sugar. Thus, what...
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Am I eligible for MCAT?
Hello altruists, I am a new permanent resident of USA. I have a Bachelor of Pharmacy (4 years) degree (CGPA 3.45 by WES) from India. I also have a masters in pharmaceutical science from a USA...
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Apparent Weight EK Physics Q
a 2 kg object submerged in an unknown fluid (specific gravity 5) has an apparent loss of mass of .5 kg. what is the specific gravity of the object? 1 1.25 5 20 Answer: 20 Please explain simply. Thanks
View ArticleTrisomy 21 occurs via Nondisjunction in which stage?
Hey guys, I drew out the nondisjunction in both meiotic stages and it seems like nondisjunction in either of the meiotic stages (MI and MII) can yield a zygote with trisomy 21. Same for Klinefelter's...
View ArticleMuscle Anatomy and such
Dont know if this is the right place.. But i am studying to become a personal trainer... At High school etc i never focused on homework and stuff.. never completed school at all.. This dosent mean i am...
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TBR Physics: Fluid Pressure and Column Height
TBR Physics Book II page 88 #22 Correct Answer: C “ A lower fluid velocity at point B, but an unchanged fluid height in Column 1” The TBR answer explanation acknowledges that velocity in the lower tube...
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