Carbohydrates - absolute configuration, epimers, common names | MCAT | Khan Academy

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  • Опубліковано 19 лис 2024

КОМЕНТАРІ • 49

  • @electricostrich9515
    @electricostrich9515 10 років тому +1

    I was totally lost on how to memorize those structures, I think you may have just saved me with those tips. Thank you so much! :D

  • @ivy_pahari
    @ivy_pahari 5 років тому +1

    Ring Arabian Xylophones Loud
    (Ribose Arabinose Xylose Lyxose)
    All Altruists Gladly Make Gum In Gallon Tanks
    (Allose Altrose Glucose Mannose Gulose Idose Galactose Talose)
    We had to create a chart of configuration of D-Aldoses and these were the mnemonics taught to us.

  • @rizqirizaldo
    @rizqirizaldo 6 років тому +20

    Now I can definitely flip people off saying glucose

  • @calvincheung1684
    @calvincheung1684 9 років тому +6

    I believe the first one should actually be D (-) tetrose

  • @tomicaa11
    @tomicaa11 9 років тому +1

    the best mnemotechnique ever

  • @sciencenerd7639
    @sciencenerd7639 2 роки тому

    thanks!

  • @joshuakim7619
    @joshuakim7619 6 років тому +1

    I like ur pneumonics

  • @yasmintelwar
    @yasmintelwar 6 років тому +1

    I feel like the voiceover is done by the actor who plays Norman Bates on Bates Motel

  • @mugdhabanduke5685
    @mugdhabanduke5685 5 років тому

    Please add videos for advanced organic chemistry for naphthalene,anthracene,etc 🙏..

  • @sohailabaheer3405
    @sohailabaheer3405 4 роки тому +2

    OMG the glucose trick!!!!! haha

  • @3zOzXzoom
    @3zOzXzoom 9 років тому +1

    man
    you're amazing
    i bet we could knock out our lecturer
    and make you both switch places xD

  • @abubakkarsaddiq5299
    @abubakkarsaddiq5299 5 років тому

    thank you soo much sir g

  • @broadwayjoe5401
    @broadwayjoe5401 8 років тому +2

    better mnemonic for D-mannose "Peace Man"

  • @hstudy8406
    @hstudy8406 4 роки тому

    Nice

  • @Om-jg5yj
    @Om-jg5yj 6 років тому +1

    If you stick out your middle and ring fingers for D-galactose it could be like the spock hand sign from star trek (minus the pointer and pinky fingers), which is a GALACTIC sign of peace i think

  • @soura
    @soura 7 років тому

    Why does Glucose ring formation occurs between C1 and C5
    (and not like between C1 and C4/C3/C6)

  • @GamingShow11
    @GamingShow11 8 років тому

    thanks a lot i love you

  • @aboofahd1679
    @aboofahd1679 8 років тому

    fantastic

  • @NeuElement
    @NeuElement 5 років тому +1

    Mannose is would do a peace sign and say "Man" in a hippy way.

  • @arshiatalebi3217
    @arshiatalebi3217 2 роки тому

    Isnt galactose a ketohexose?

  • @moristhetiger
    @moristhetiger 7 років тому

    presence of just one ketone or aldehydes annihilates the possibility of symmetry popping up 😏

  • @maybeokie
    @maybeokie 7 років тому +6

    the structures for glucose and galactose are wrong, they are epimers on c-4

    • @skashani6
      @skashani6 6 років тому

      I'm confused by your comment. They look correct to me? Can you elaborate?

    • @muhammadibrahimkhalil7370
      @muhammadibrahimkhalil7370 6 років тому

      He means both glucose and galactose have same structure but differs at structure at 4th carbon.

  • @meax5439
    @meax5439 7 років тому

    great video!!!

  • @protipsbynani289
    @protipsbynani289 5 років тому

    Glucose not gulose

  • @jenj4961
    @jenj4961 4 роки тому

    Doesn’t the lowest chiral center have an (S) stero here why did you say R?

  • @TheEpiphany101
    @TheEpiphany101 5 років тому +1

    .... What is a "threose" ??? :/

  • @Marisaprincess47
    @Marisaprincess47 5 років тому

    He said glucose and mannose are diastereoisomers, but wouldn't they be epimers?

  • @Bhan7140
    @Bhan7140 7 років тому

    Could you explain why two D-glucose molecules look different at 3:52?

    • @Om-jg5yj
      @Om-jg5yj 6 років тому +1

      the first one says D-gulose, which is a different sugar than D-glucose

  • @donjam33
    @donjam33 Рік тому

    D ➡😮

  • @shantanuthakur6081
    @shantanuthakur6081 6 років тому

    Are all D and L molecules enantiomers of each other? (Not just biomolecules)

  • @luwluwstarshyne
    @luwluwstarshyne 4 місяці тому

    9:11 xDD

  • @bentom345
    @bentom345 9 років тому

    flipping of means something slightly different in the uk

  • @97niso
    @97niso 6 років тому +3

    Am i the only one who doesn't see a man holding a gun for Mannose...?

  • @farreladhikaputra5704
    @farreladhikaputra5704 5 років тому

    girls love mannose

    • @BigBlueEgg
      @BigBlueEgg 5 років тому

      I'd say they love galactose

  • @hazratullahhisham
    @hazratullahhisham 7 років тому +2

    You don't have taste like Khan.......
    but still good just because you are working in khan academy.

  • @wintaering
    @wintaering 7 років тому

    youre lovely.

  • @alisonmiller5984
    @alisonmiller5984 8 років тому +2

    if i drank alcohol for everytime u said "D" i wld be a drunk mofo . great video tho ;)

  • @electricostrich9515
    @electricostrich9515 10 років тому +2

    I was totally lost on how to memorize those structures, I think you may have just saved me with those tips. Thank you so much! :D

  • @abdula5849
    @abdula5849 8 місяців тому

    Amazing