Leah4sci MCAT
Leah4sci MCAT
  • 179
  • 5 690 968
How to Draw Fischer Projections
Leah4sci.com/Fischer presents: Introduction to Fischer projections including how to quickly draw and interpret them for molecules with single and multiple chiral centers
📺Watch Next: Fischer Projection Stereochemistry RS Chirality czcams.com/video/S7uWtkcaCQc/video.htmlsi=fJDXV-nIl2581lGM
Tired of conflicting and confusing MCAT advice? Access My FREE guide for everything MCAT prep: leah4sci.com/MCATguideYT
In this video you’ll learn all about Fischer projections including what they are, how to read them, how to quickly draw and convert 3D molecules into Fischer projection and back without ever having to build a model kit.
You’ll learn a number of different methods for converting 3D to Fischer from small molecules containing a single chiral center, to complex molecules like D-Glucose containing multiple chiral centers.
You’ll also learn what happens when you rotate a Fischer Projection 90 and 180 degrees.
↪ Additional Links & Resources ↩
▸Fischer Projections Series + Cheat Sheet Leah4sci.com/Fischer
▸Chirality and Stereochemistry Series + Cheat Sheet Leah4sci.com/Chirality
▸How to Use Your Organic Chemistry Model Kit Leah4sci.com/ModelKit
- - - - - - - - - - - - - - - - - - - - - - - -
⏱ In this video:
[0:18] Interpreting Fischer Projections - Mr. Organic Chemistry
[0:56] Drawing Fischer Projections from 3D Structures
[3:09] Rotating Fischer Projections
[4:06] More than One Chiral Center - Example #1
[7:01] More than One Chiral Center - Example #2
[7:58] Turning Fischer Projections into 3D Structures
[9:01] Multiple Chiral Centers - Glucose Example
- - - - - - - - - - - - - - - - - - - - - - - -
Looking for guidance on how to tailor your MCAT Self-Study journey to fit your unique background, experience, and personal goals without feeling alone in the process?
That’s what my new MCAT program is all about, join me here:
leah4sci.com/selfstudyYT
🔔 Subscribe to my channel so you don’t miss out on any new videos 🔔
🩺💉 My MCAT CZcams Channel: leah4sci.com/MCATyoutube 💉🩺
🧪 My Organic Chemistry CZcams Channel: leah4sci.com/youtube 🧪
❓Questions? Ask me here: Leah4sci.com/contact
👩‍🏫 For private online tutoring visit my website: Leah4sci.com/mcat-tutoring/
Let’s connect:▸Instagram: leah4sci
▸Facebook: Leah4Sci
▸X / Twitter: Leah4Sci
▸Pinterest: www.pinterest.com/leah4sci/
zhlédnutí: 1 192

Video

Memorize and Draw the 20 Amino Acids
zhlédnutí 2KPřed měsícem
Leah4sci.com/AminoAcids presents: Memorize all 20 amino acids in JUST 10 MINUTES including their full name 3 & 1 letter abbreviation, side chains and characteristics 📺Watch Next: czcams.com/video/-j0796RPGtI/video.html Tired of conflicting and confusing MCAT advice? Access My FREE guide for everything MCAT prep: leah4sci.com/MCATguideYT Knowing the amino acids is CRITICAL for the MCAT. This vid...
MCAT Math Without a Calculator Simplified with Shortcuts
zhlédnutí 4,8KPřed 2 měsíci
Leah4sci.com/MCATMath presents: Introduction to MCAT Math without a calculator including what you need to know, and shortcuts to quickly solve everything from multiplication with decimals and scientific notation, negative logs and trigonometry 📺Watch Next: Multiplication and Division Decimal Trick for MCAT Math czcams.com/video/8DKz7Vnq7N8/video.htmlsi=-YFe2WJaJzxSegPT Tired of conflicting and ...
Fischer to Haworth shortcut for Glucose and Fructose
zhlédnutí 2,8KPřed 2 měsíci
Leah4sci.com/Fischer presents: Fischer to Haworth shortcut for Glucose and Fructose 📺Watch Next: How to Draw Fischer Projections czcams.com/video/OCfTyNkIt40/video.html Tired of conflicting and confusing MCAT advice? Access My FREE guide for everything MCAT prep: leah4sci.com/MCATguideYT This video will walk you through the mechanism for interconverting between the linear and ring forms of both...
Peptide Isoelectric Point with pI Shortcut
zhlédnutí 2KPřed 2 měsíci
Leah4sci.com/aminoacids presents: Peptide Isoelectric point without a calculator. Quickly find the isoelectric point for amino acid chains without a calculator using my shortcut for drawing the peptide quickly, simplifying the memorized pKa values, and a fun MCAT trick for figuring out which specific pKa values to average 📺Watch Next: Memorize and Draw the 20 Amino Acids czcams.com/video/Ae6hf-...
Amino Acid Stereochemistry - R & S vs D & L
zhlédnutí 3,5KPřed 4 měsíci
Leah4sci.com/aminoacids presents: Amino Acid Stereochemistry from R and S to D and L with a review of ranking priority (Cahn-Ingold-Prelog), Fischer Projections, along with a time-saving MCAT amino acid shortcut 📺Watch Next: How to Draw Fischer Projections czcams.com/video/OCfTyNkIt40/video.html Tired of conflicting and confusing MCAT advice? Access My FREE guide for everything MCAT prep: leah4...
Multiplication & Division (No Calculator) Decimal Trick for MCAT Math
zhlédnutí 6KPřed 5 měsíci
Leah4sci.com/MCATmath presents: Easy MCAT Multiplication and Division of large numbers and decimals without a calculator using the decimal trick 📺Watch Next: MCAT Math Without a Calculator Simplified with Shortcuts czcams.com/video/b_1LwWcBb-Q/video.html Tired of conflicting and confusing MCAT advice? Access My FREE guide for everything MCAT prep: leah4sci.com/MCATguideYT This video will walk y...
The MCAT Study Dilemma: Are You Wasting Time?
zhlédnutí 1,7KPřed rokem
The MCAT Study Dilemma: Are You Wasting Time?
No More MCAT Dates? (When They'll Reopen)
zhlédnutí 1,4KPřed rokem
No More MCAT Dates? (When They'll Reopen)
ADHD + MCAT = Do this!
zhlédnutí 3KPřed rokem
ADHD MCAT = Do this!
Stop Missing Chem/Phys Questions Due to Non-Calculator Math
zhlédnutí 9KPřed rokem
Stop Missing Chem/Phys Questions Due to Non-Calculator Math
How To Break an MCAT Plateau and Raise Your MCAT Scores
zhlédnutí 3,4KPřed rokem
How To Break an MCAT Plateau and Raise Your MCAT Scores
3 Month MCAT Study Plan - Weekly Targets and Goals
zhlédnutí 3,6KPřed 2 lety
3 Month MCAT Study Plan - Weekly Targets and Goals
Electrolytic Cells - Nonspontaneous Redox Reactions
zhlédnutí 34KPřed 2 lety
Electrolytic Cells - Nonspontaneous Redox Reactions
Galvanic / Voltaic Electrochemical Cells
zhlédnutí 13KPřed 2 lety
Galvanic / Voltaic Electrochemical Cells
Static and Kinetic Friction - Forces in MCAT Physics
zhlédnutí 9KPřed 2 lety
Static and Kinetic Friction - Forces in MCAT Physics
What Is The MCAT? 5 Minute Overview of Subjects, Sections, Timing and more
zhlédnutí 12KPřed 2 lety
What Is The MCAT? 5 Minute Overview of Subjects, Sections, Timing and more
Logarithms and Antilogs Without a Calculator (MCAT Shortcut)
zhlédnutí 39KPřed 2 lety
Logarithms and Antilogs Without a Calculator (MCAT Shortcut)
Am I Smart Enough to be a Doctor?
zhlédnutí 6KPřed 2 lety
Am I Smart Enough to be a Doctor?
Volume, Surface Area and Perimeter without a Calculator - MCAT Geometry
zhlédnutí 8KPřed 2 lety
Volume, Surface Area and Perimeter without a Calculator - MCAT Geometry
MCAT Daily / Weekly Study Schedule
zhlédnutí 6KPřed 3 lety
MCAT Daily / Weekly Study Schedule
MCAT Prereqs And What to do if You Haven't Taken Them
zhlédnutí 5KPřed 3 lety
MCAT Prereqs And What to do if You Haven't Taken Them
Glycolysis Payout Phase - Steps 6-10 (part 2)
zhlédnutí 10KPřed 3 lety
Glycolysis Payout Phase - Steps 6-10 (part 2)
Glycolysis Steps 1-5 Cellular Respiration Investment Phase
zhlédnutí 18KPřed 3 lety
Glycolysis Steps 1-5 Cellular Respiration Investment Phase
5 Steps To Studying & Mastering MCAT Sciences
zhlédnutí 8KPřed 3 lety
5 Steps To Studying & Mastering MCAT Sciences
Limiting Reactant, Excess Reagent and Product Yield
zhlédnutí 4KPřed 4 lety
Limiting Reactant, Excess Reagent and Product Yield
Balancing Redox Equations in Base + Practice
zhlédnutí 3,9KPřed 4 lety
Balancing Redox Equations in Base Practice
How to Stay Alert for the 6:30am, 12:15pm and 6pm MCAT
zhlédnutí 3,6KPřed 4 lety
How to Stay Alert for the 6:30am, 12:15pm and 6pm MCAT
Passage Timing for the Shorter MCAT - Revised Pacing Strategy
zhlédnutí 4,3KPřed 4 lety
Passage Timing for the Shorter MCAT - Revised Pacing Strategy
How To Practice AAMC Exams in 5:45 For the Shorter MCAT
zhlédnutí 6KPřed 4 lety
How To Practice AAMC Exams in 5:45 For the Shorter MCAT

Komentáře

  • @NurseEmelda
    @NurseEmelda Před 4 hodinami

    Thank you so much for all the videos you do. Quick question for you, does Khan academy still have the 300pg PS document? I can’t seem to find it

  • @faresqannam1960
    @faresqannam1960 Před 18 hodinami

    I love it! single-handedly saving lives here !!

  • @Chuwy888
    @Chuwy888 Před 18 hodinami

    I needed this so bad, thank you Leah! I have been struggling the last few months studying full time for this exam to only have plateau and not improve with my FL exams. I have taken 4 full length AAMC exams and have practiced CARS, went through Kaplan, and did a bit of Anki. I think my issue is trying to do a lot in a little bit and I don’t get the most out of my studying-surface level learning(exposure) is not enough for me, and I recognize that now. I need time and probably have to go about using my resources in a consistent and effective way. You will always be a core part of my college education and journey to becoming a doctor.

  • @tiagopulido1719
    @tiagopulido1719 Před dnem

    thank you. I really needed this.

  • @tomokochii
    @tomokochii Před 3 dny

    Wow❤❤❤ im from chile i'm studying nursing i've always accomplished with chemistry, but you saved meee 😭😭😭😭 thank you very much!!!!!

  • @NurseEmelda
    @NurseEmelda Před 5 dny

    I’m prepping for McAT and the math is just kicking my behind. I’m currently going through your MCAT videos. I am so so grateful for you!

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 4 dny

      Aww you are so very welcome! Make sure to check out this recent video czcams.com/video/b_1LwWcBb-Q/video.html I also have many math resources at leah4sci.com/MCATmath

  • @marcoslofiego5584
    @marcoslofiego5584 Před 6 dny

    A very useful video!

  • @Afa489
    @Afa489 Před 7 dny

    True!! I really wish I knew this

  • @FrontierThesis
    @FrontierThesis Před 7 dny

    Re 6:26: Would 8.5 be close enough, Leah? I'm using these as my values (I've already memorized them, but I could memorize more specific values if you think it's necessary): Carboxyl: 2 D = 4 E = 4 H = 6 C = 8 Y = 10 K = 11 R = 12 Amino = 9 Thank you!!

  • @edwardscott-fh8sz
    @edwardscott-fh8sz Před 9 dny

    Thank you for the video. In general what types of doctors do your students seek out to confirm their accommodations with the MCAT board?

  • @user-tw8tj3lw3i
    @user-tw8tj3lw3i Před 10 dny

    Great video. The left/right eye method is one in which I will never understand. I'm sticking with the R/S guess/check method

  • @kofipapa2886
    @kofipapa2886 Před 10 dny

    I don't think the virus pushes at all....lol To push means it has some energy but that is not it You would have to learn about clathrins and stop saying push. It is almost like a lock and key system with the virus and if the receptors on the host match with the those on the viral particles, the cell takes the virion in via endocytosis(rme).

  • @UserUsing-hb8uv
    @UserUsing-hb8uv Před 14 dny

    I was really scared abt maths in the med exam thks for these it’s so cool - Do more!!!!! 🌺

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 9 dny

      So glad you like it! Have you seen this? leah4sci.com/mcat/mcat-math-without-a-calculator/

  • @user-ox9nc5vp4g
    @user-ox9nc5vp4g Před 14 dny

    Thank you so much ❤️

  • @justinlee7039
    @justinlee7039 Před 14 dny

    Hi! Around 9:00 into this video, why won’t H2O do nucleophilic attack into the imine on the right (where N has positive charge with 4 bonds total)? Why does O in OH group have to form double bond with the carbon and kick out C-N pi bond to the nitrogen for H2O to then attack the carbonyl Carbon? Is it because C=O+ makes electrophilic carbon more electrophilic than C=N+?? Thank you!

  • @noeditbookreviews
    @noeditbookreviews Před 16 dny

    Thanks. I tookn't chem in high school or college and known't much of anything about it. I'm preparing to startify initiating commencement of beginnification of learning it.

  • @NamesIWantAreInvalid
    @NamesIWantAreInvalid Před 17 dny

    Cries *

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 4 dny

      Sending hugs, you CAN reach for your dreams!

  • @naluchamakwele-ho7ke
    @naluchamakwele-ho7ke Před 18 dny

    😮😮😮

  • @henriqueserra3233
    @henriqueserra3233 Před 19 dny

    Just to check if I got that right haha Basically, in here, the (-) side of the cell is giving electrons to the +ions by the cathode, and the (+) side is receiving electrons from the -ions by the anode. The cathode is reducing ions, and the anode oxidizing them. In the galvanic cell, the cathode is still reducing, but it's reducing what exactly, the anode? So, the metal in the cathode goes to the ion form, getting itself oxidized while reducing the anode, which is oxidizing the cathode while reducing the +ions in the other solution? I am a bit lost in this one Is everything right?

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 18 dny

      I'm working on a comparison video that goes into detail about the differences. I hope to have it out in a few days

    • @henriqueserra3233
      @henriqueserra3233 Před 17 dny

      @@Leah4sciMCAT Already got my exam haha but thanks, I will check it

  • @bmxider
    @bmxider Před 23 dny

    are we supposed to convert g to kg? or can we use g in this case?

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 18 dny

      If you're working through calculations, you have to make sure units are consistent. If you're dealing with two different units for weight you have to convert one to the other

  • @jackkingxx2645
    @jackkingxx2645 Před 24 dny

    Whattttt i dont understand 😭😭😭 amd my test is tomorrow 😭😭

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 23 dny

      I'm sorry you weren't understanding! How do you feel about your exam?

  • @lani8819
    @lani8819 Před 24 dny

    🔥 Thank you.

  • @phuyen1476
    @phuyen1476 Před 25 dny

    I want to cries everytime I study for the MCAT. I swear I can feel physical pain looking at these 😢

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 23 dny

      I'm so sorry to hear that! Have you checked out the resources on leah4sci.com/mcat? I want to help you reach your MCAT goal

  • @95kmusic
    @95kmusic Před 25 dny

    Why is the carbonyl and H in the wrong place at 10:30? Why are you swapping?

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 23 dny

      Correct form for a Fischer projection is to have the main carbon chain along the vertical backbone of the structure. That means, by convention, the carbonyl carbon should be on the vertical line and not the horizontal. One swap of the carbonyl and hydrogen changes this to follow convention, but then we have to do the second swap to maintain the R configuration of alanine.

    • @95kmusic
      @95kmusic Před 21 dnem

      @@Leah4sciMCAT thank you for taking the time to explain :)

  • @user-oo4ze9sf3l
    @user-oo4ze9sf3l Před 28 dny

    2:58 how to decide, which carbon to rotate?

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 23 dny

      When we talk about rotation, we're talking about rotating a carbon to carbon BOND. You could think of it as making the substituents on both carbons face in the same direction. So it's really a matter of perspective. Do you want to draw your Fischer projection by looking at the molecule from below? Then, rotate so that the substituents on both carbons are facing down. Or, do you want to draw your Fischer by looking at the molecule from above? Then, rotate so that the substituents on both carbons are facing up.

  • @scottdorfler2551
    @scottdorfler2551 Před 29 dny

    I don't want to know where Mr. Organic Chemistry wears his second bow tie. I knew he was a perv. 😂

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 28 dny

      😆🤦 on his neck? on the first button of his shirt?

  • @emanizrail
    @emanizrail Před měsícem

    your math videos for the MCAT are super helpful

  • @soniad9814
    @soniad9814 Před měsícem

    omg this video is so good.

    • @Leah4sciMCAT
      @Leah4sciMCAT Před 29 dny

      Thank you! Hope this clarifies everything for you

  • @saadkhan8308
    @saadkhan8308 Před měsícem

    Aspartic acid's mnemonic was a total jumpscare

  • @matrutirthamishra8208
    @matrutirthamishra8208 Před měsícem

    Thank you so much mam

  • @himanshuwaiker6947
    @himanshuwaiker6947 Před měsícem

    Really helpful ❤

  • @chelseaxagnes
    @chelseaxagnes Před měsícem

    this was sooo helpful thank you so much!!! just a quick question i was wondering if there's a way to do inverse of sin, cos and tan? or if there's a video already up i can watch?

    • @Leah4sciMCAT
      @Leah4sciMCAT Před měsícem

      I don't have a video on it. I try to look at the numbers and bring it close to something I can reason backwards using the tricks I share here

  • @JedaJess
    @JedaJess Před měsícem

    Thx u so much! ❤