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Aldoses, Ketoses, Fischer Projections and Epimers 

Andrey K
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23 авг 2024

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Комментарии : 92   
@psydocthepsyduck8382
@psydocthepsyduck8382 9 лет назад
These lectures are totally worth more then the price of a typical university course! Thanks!
@AKLECTURES
@AKLECTURES 9 лет назад
Yugi Bear Hey! I appreciate that! Thanks for the positive feedback :-)
@lubna-lx1kf
@lubna-lx1kf 7 лет назад
SimCopter 1
@Dr.MaorPich
@Dr.MaorPich 7 лет назад
Agree.
@giselle8867
@giselle8867 3 года назад
You blew my mind with the carbohydrate name reason. My professor never mentioned that and this is such an easy and great way to remember the basic formula for them. You are amazing!
@thehalfacrepasture
@thehalfacrepasture 3 года назад
Most underrated science channel on YT. If you guys offered an MCAT course I would have gladly signed up for it.
@muslimsayed2261
@muslimsayed2261 8 лет назад
Your final example of an epimer does not show D-Mannose. Instead it shows D-Allose. Other than this minor mistake, You did a great job on the video.
@gokudude45
@gokudude45 8 лет назад
Thank you for existing!
@shawnmakiri4435
@shawnmakiri4435 4 года назад
my teacher, google, science website, and my textbook failed to help me really understand epimer. You sir did what I thought was impossible. Thank you so much I really appreciate it. I wish you where my lecturer.
@breeselearning9915
@breeselearning9915 5 лет назад
I gotta say, I love this guy's videos. For a guy who really is no good at chemistry, I am really learning a lot more with this guy than anywhere else.
@johnguillen68
@johnguillen68 3 года назад
Every time I search for topics on biochem I come across his lectures but when I see so many writings on his board, I feel like I'm going to get lost. All in all, I do get a good understanding from his lectures.
@amgadmikhaeil9776
@amgadmikhaeil9776 7 лет назад
All the students in my class really appreciate your efforts in explaining the different content of Biochemistry. You are a great teacher. Thank You Very Much for Your Help :)
@estonism
@estonism 8 лет назад
Hey. Love your lectures. Very helpful for biochem courses. I think there is a mistake in one of the wedge and dash diagram in the second column under the fischer projection. The wedge and dash diagram drawn from the fischer projection should have the OH groups going into the board (dashed) and the H coming out of the board (wedged). Another way to remedy it would be to switch the end carbons. Thanks again for all of your videos.
@kimiamehrabkhani4462
@kimiamehrabkhani4462 2 года назад
I do not know how to thank you enough, you are AMAZING!
@helenafaria1671
@helenafaria1671 7 лет назад
D-Glucose and D-Mannose are also epimers but on the carbon 2 :)
@riverwest360
@riverwest360 3 года назад
God richly bless you for making learning so easy 🙂 after class if I don't get anything right you always explain it right for me ... thank you so very much 🥰
@jasminejohnson2182
@jasminejohnson2182 2 месяца назад
This man is top tier
@aliahsyafika4585
@aliahsyafika4585 7 лет назад
i love your explanation 😍😍😍
@Ishraqwantstochill
@Ishraqwantstochill 8 лет назад
Is that 3rd 3D depiction on top right correct? Because if you move the CHO to the left, shouldn't the two H(s) be pointing towards us with the 2 OH(s) pointing away?
@ryangibson609
@ryangibson609 4 года назад
i agree, it is incorrect. looks like he gave the enantiomer
@kiruthikap5357
@kiruthikap5357 4 года назад
I have a doubt Then D-erythrose and D-threose are also epimers, right?
@ogechukwudaphey9469
@ogechukwudaphey9469 2 года назад
Thank you so much...I almost gave up but this helped ❤️
@jesusvillarreal8548
@jesusvillarreal8548 7 лет назад
Is the 3D projection correct? Aren't the H supposed to be dark wedges pointing out of the page?
@ryangibson609
@ryangibson609 4 года назад
it is incorrect
@yair4616
@yair4616 8 лет назад
just wanted to tell you that you're amazing. thank you very much.
@farwaanjum
@farwaanjum 5 лет назад
My ultimate teacher👌👌👌👍❤️
@vijaym.vijaydas8885
@vijaym.vijaydas8885 4 года назад
Your class are👌👌
@Williaamrodrigues
@Williaamrodrigues 5 лет назад
That saved my semester! Thank you 🙏🏻
@arlesto2468
@arlesto2468 6 лет назад
These videos are amazing !!! Thank you !!!
@vipsbiochemistry5796
@vipsbiochemistry5796 2 года назад
hi, great work ....lots of curious points have been illustrated. Done a minor error by mistake on epimerism, hope you know by now.
@alhaddi
@alhaddi Год назад
Thank you very much.
@ryangibson609
@ryangibson609 4 года назад
top rightmost structure is incorrect, you gave the enantiomer of the two structures to the left of it.
@Reem-mc4cw
@Reem-mc4cw 8 лет назад
.Good explanation,Great Job,thank you so much
@biotechnologyzainab3448
@biotechnologyzainab3448 8 лет назад
explanation very wonderful . Thank you very much
@nakulsampat1602
@nakulsampat1602 7 лет назад
very good lecture seriously appreciate your efforts sir thank you
@Svetik12345ify
@Svetik12345ify 9 лет назад
Thank you for your videos they are great!
@AKLECTURES
@AKLECTURES 9 лет назад
JustSve hey! you're welcome, thanks for watching :)
@ahmadmuhammadabba5063
@ahmadmuhammadabba5063 3 года назад
Perfect
@tinatina-tu4mb
@tinatina-tu4mb 8 лет назад
thank you so much you really made it very simple
@Yt_All_
@Yt_All_ 6 месяцев назад
Love you sir ❤❤ Thanks
@stevenlimanda5143
@stevenlimanda5143 9 лет назад
I think what you mean by "mannose" in this lecture is "allose".. isn't it? :)
@agoldstein135
@agoldstein135 4 года назад
@@johmcg64 I mean... You can google it, its not mannose...
@collinsn.6674
@collinsn.6674 3 года назад
it is Ribose not mannose
@anuragverma3966
@anuragverma3966 5 лет назад
the perfect lectures.....than you sir
@tunaaydn6849
@tunaaydn6849 4 года назад
14:24 for screen shots
@ashokgowda102
@ashokgowda102 6 лет назад
super explaining about individual tapic
@euscieu4246
@euscieu4246 8 лет назад
You're the best! Thanks
@Procrastinerd
@Procrastinerd 9 лет назад
Can you give me an example of diastereoisomers that differ at 2 or more chiral carbon? Aren't both examples presented epimers?
@AKLECTURES
@AKLECTURES 9 лет назад
Silent Language D-glucose and D-gulose are two examples of diastereoisomers that are not epimers.
@AKLECTURES
@AKLECTURES 9 лет назад
Silent Language And yes, both examples given in this lecture are epimers, which is actually fine. Thats because all epimers are diastereoisomers but the converse is not true; all diastereoisomers are not epimers.
@Procrastinerd
@Procrastinerd 9 лет назад
I see. Thank you!
@marshad.2257
@marshad.2257 7 лет назад
Thanks so much for asking your second question. I had the same one!
@ViralDF
@ViralDF 2 года назад
Isomers with stereocenter(Enantiomers and if 2 or more stereocenter then diastereoisomers) and isomer without stereocenter(cis and trans,...etc)
@shreyaverma1699
@shreyaverma1699 Год назад
Structure of D-mannose is not correct. At carbon 2 there should be H on the right and OH on the left.. so it becomes an epimer of glucose which differs at just C2.
@dentist9319
@dentist9319 Год назад
Jordan University students depend on this channel in biochemistry course 😁
@user-df5vr7dq2i
@user-df5vr7dq2i 4 года назад
l have qoustion please : when l said the« same form of sugar» that is means like glucose and fructose ? or it's means the L and D for the same sugar ?!
@lilithasotondoshe8226
@lilithasotondoshe8226 5 лет назад
this is excellent
@ss-nu8xx
@ss-nu8xx Год назад
fantastic lecture. grateful for it but that's not mannose. If you did the d version that is had the last chiral carbon"s OH group on the right then the OH groups of the 2nd and 3rd carbon atoms will be on the left. D glucose and d mannose are NOT epimers
@sarasara-ct6ro
@sarasara-ct6ro 8 лет назад
good video .thanks my sir
@azn4lfe1
@azn4lfe1 8 лет назад
Your D-Mannose is wrong buddy. But the video is great explaining and really helped me a lot! thanks!
@AKLECTURES
@AKLECTURES 8 лет назад
+azn4lfe1 someone already mentioned that in the comments, but thanks anyways for catching that
@jessiechurchill8907
@jessiechurchill8907 8 лет назад
amazing, thank you!
8 лет назад
Very interesting!
@lidiyaivannikova5464
@lidiyaivannikova5464 6 лет назад
Does anyone know which is a penultimate hydroxyl group if the fisher ends in OH instead of CH2OH?
@IceBlueLugia
@IceBlueLugia 2 года назад
So the final CH2 is connected to 2 OH groups?
@Faendal91
@Faendal91 8 лет назад
I'm still a bit confused on how to see the difference with whether the molecule has a aldehyde or ketone group. I can't find the difference in the configuration of the atoms in each group to see how one would identify this.
@mateusrodrigues7744
@mateusrodrigues7744 8 лет назад
I indicate the book "biochemistry lehninger. Have you ever read it? It explains the difference.
@damishypedamischill7404
@damishypedamischill7404 6 лет назад
im always asking myself why i study this if i dont know how it enables me i seek whys
@Nirajkumar-ob7uo
@Nirajkumar-ob7uo 2 года назад
Omg I loooovvveee u sir🥺
@rassimsimou1594
@rassimsimou1594 8 месяцев назад
Good
@eddymutugi5695
@eddymutugi5695 2 года назад
Great Work But Make the structures more Visible
@sreejithvk8478
@sreejithvk8478 4 года назад
he was saying nantomer or antomer, I could not make out what he was saying at 3:12 or if he meant an anomer.
@diptarka100
@diptarka100 8 лет назад
kindly check the structure of d mannose.... lectures' great btw :-)
@gt4941
@gt4941 Год назад
that's d-allose at the bottom right
@shaannazeem1791
@shaannazeem1791 7 лет назад
what is the long form of ak?
@ranm9180
@ranm9180 6 лет назад
life saver 🤗🤗🤗🤗🤗🤗🤗🤗
@mialabinc
@mialabinc 4 года назад
The structure of D-manose here is wrong. Two OH should be flipped with the hydrogen.
@meghasingh4997
@meghasingh4997 5 лет назад
i guess, the structure drawn is a D allose, not D mannose
@anjaligarrett5044
@anjaligarrett5044 6 лет назад
What about an anomer?
@sreejithvk8478
@sreejithvk8478 4 года назад
he was saying nantomer or antomer, I could not make out what he was saying at 3:12 or if he meant an anomer.
@abeerakasha8933
@abeerakasha8933 5 лет назад
I don't get aldoses and alketose!!😭
@zerakhu
@zerakhu 5 лет назад
Mirin knowledge aesthetics
@Janejackson89
@Janejackson89 7 лет назад
4:45
@klausnewman8125
@klausnewman8125 6 лет назад
That's not mannose, it's allose.
@anjaliagrawal1493
@anjaliagrawal1493 3 года назад
Ur final ex is not the right structure of D mannose by the way except this awesome lecture it was
@aizabernardo492
@aizabernardo492 5 лет назад
😍😍😍
@sadafshefa2285
@sadafshefa2285 5 лет назад
Best
@younis3355
@younis3355 2 года назад
🤨 chacha D-mannose jo structure galat aa sahe kar chibba
@harisff9498
@harisff9498 2 года назад
🥴
@Nosnosiii
@Nosnosiii 4 года назад
I love you more than my boyfriend U__U
@najjembajoyce
@najjembajoyce 10 месяцев назад
but ur words are so small
@jasminejohnson2182
@jasminejohnson2182 2 месяца назад
This man is top tier
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