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Amino Acids MCAT Cheat Sheet Study Guide

May 7, 2015 By Leah4sci

mcat-amino-acids-Cheat-Sheet-preview

When it comes to amino acids on the MCAT you have to know… everything. But everything quickly gets overwhelming. And after a quick search, I didn’t find any good amino acid charts so I’ve decided to create one for you. Download a copy to your computer and another to your phone. When you find yourself […]

Filed Under: Amino Acids, MCAT Cheat Sheet, MCAT Guides Tagged With: amino acids, cheat sheet, mcat cheat sheet

Converting Fischer to Haworth Pyranose and Furanose

July 17, 2015 By Leah4sci

Converting Fischer to Haworth and Chair for glucose and fructose tutorial video

Video 5 in the Fischer Projection series shows you how to convert a linear sugar in the Fischer Projection to a 6-member Haworth Projection Pyranose or 5-member Furanose. You’ll learn my shortcut to help you instantly recognize the correct version of any cyclic sugar. (click to watch on YouTube or catch the Video transcript here) […]

Filed Under: Fischer Projections Tagged With: fischer projection, fischer projections, fructose, furanose, glucose, hayworth projection, pyranose

Converting Newman to Fischer Projections Tutorial Video

July 17, 2015 By Leah4sci

Converting Newman to Fischer Projections Video

Fischer Projection Series: Video 4 (Newman Projection Series: Video 6) This video shows you how to convert from a Newman Projection to a Fischer projection using the long and tedious method, followed by my shortcut. You’ll also see my trick for converting from Fischer back to Newman. (Watch on YouTube: Newman to Fischer. Click CC […]

Filed Under: Fischer Projections Tagged With: fischer projection, fischer projections, newman projection

Stereochemistry of Amino Acids RS to DL

March 13, 2016 By Leah4sci

Amino Acid Stereochemistry RS DL

Amino acids are biologically active molecules. 19 of the 20 common amino acids have a chiral alpha carbon. 2 amino acids (Leucine and Threonine) have a second chiral center in their side chain. This video shows you how to: Find R/S for 3-D amino acids Find R/S and D/L for amino acid Fischer projections Trick […]

Filed Under: Amino Acids Tagged With: amino acids, chirality, fischer projection, stereochemistry

Fischer Projection Practice Problem Set

July 11, 2015 By Leah4sci

Fischer Projections Practice Problem Set

Fischer projections crop in both organic chemistry and biochemistry. After studying my Fischer Projection tutorial series try your hand at this short quiz and see how you do. The questions range from simple to intermediate and are designed to help you figure out where you stand. If you find yourself stuck on any given problem […]

Filed Under: Fischer Projections, MCAT Practice Problems Tagged With: Fischer quiz, MCAT quiz, orgo quiz, quiz

Amino Acids Practice Quiz

March 21, 2016 By Leah4sci

pka amino acids table

Amino acids are a big deal on the MCAT. You can’t simply ‘get’ the concept. You must be able to quickly recall information and apply them to questions. The quiz below will help you figure out if you’ve mastered this topic. The questions are simple but thorough. You either know it, or you don’t! Be sure […]

Filed Under: Amino Acids Tagged With: amino acid, amino acids, biochemistry, mcat, MCAT quiz, practice quiz, quiz

Amino Acid Charge in Zwitterions and Isoelectric Point MCAT Tutorial

June 11, 2015 By Leah4sci

glycine protonated and deprotonated

Knowing how to find both charge and isoelectric point for amino acids is a critical MCAT skill. Understanding why an amino acid will gain or lose a proton at a given pH is even more critical. The MCAT is a test of logic and understanding, which is why this article will break down amino acid […]

Filed Under: Amino Acids Tagged With: amino acid charge, isoelectric point, pi, zwitterion

Converting Sawhorse to Fischer Projections Tutorial Video

May 28, 2015 By Leah4sci

Sawhorse to Fischer Projections orgo tutorial video

Converting between sawhorse and Fischer projections is a critical skill in understanding your chiral molecules. Even if you’re not required to DRAW conversions on your exam, knowing HOW is a critical skill to truly understanding the nature of chirality in Fischer Projections. This video shows you my step by step + shortcut approach. (click to […]

Filed Under: Fischer Projections Tagged With: fischer projection, fischer projections, sawhorse

Amino Acids 3 Polar Acidic and Basic Side Chains

March 7, 2016 By Leah4sci

Polar Acidic and Basic Amino Acids tutorial video by Leah Fisch

Hydrophilic amino acids are much more reactive and interactive compared to hydrophobic side chains. This video breaks down the hydrophilic amino acids including polar neutral, acidic and basic side chains. (Watch on YouTube: Polar/Acidic/Basic Amino Acids. Click cc on the bottom right for video transcript) Referenced in this video: Acid Base Tutorial Series Zwitterion Tutorial […]

Filed Under: Amino Acids

Amino Acids 2 Hydrophobic Non-Polar Side Chains

March 3, 2016 By Leah4sci

Hydrophobic Amino Acids Polar Neutral Side Chains Tutorial Video Leah Fisch

Hydrophobic amino acids have neutral non-polar side chains. Given the lack of polarity these groups have no means to interact with an aqueous biological environment. This video breaks down each of the hydrophobic amino acids to help you understand the name, 1 and 3 letter abbreviations, and side chain functional groups. (Watch on YouTube: Hydrophobic […]

Filed Under: Amino Acids Tagged With: amino acids

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Alkene Reactions Overview Cheat Sheet – Organic Chemistry

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Introduction To MCAT Math Without A Calculator

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KET Keto enol tautomerization reaction and mechanism leah4sci

Keto Enol Tautomerization Reaction and Mechanism

Keto Enol Tautomerization or KET, is an organic chemistry reaction in which ketone and enol … [Read More...]

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