Transcription and mRNA processing | Biomolecules | MCAT | Khan Academy

[@numannedimayvaz1106]

this dude is so damn amazing. His courses are free PLUS he hasn't any ads in his videos. Much Respect for this guy!

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Khan academy is a non profit that you can donate to

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Lol mines tc has all her vids in yt monetized 😂 doesn't even show up to class, just ask us to watch 15-18 vids per week

[@sophies8573]

This video is supposed to be for high school students and I'm a med student learning the exact same material 😂

[@leandro6285]

Same haha

[@adibsiddiki7409]

Sophie Van der Meer Well done on getting in, both of you. I'm hoping to.

[@muaazbutt9342]

And i thought i was alone xD

[@RS6y6]

I'm a med student too and I wish that this would be enough for the molecular cellbiology exam but it's not even close :'( Great video btw

[@cpard2d2]

I´m in a masters program and we´re learning this too. We go a bit deeper with the promoter sequences, transcription factors and the different polymerases but overall, it´s the same XD.

[@sleepyduck]

the fact that you can digest all categories of subjects and then teach is mind boggling!

[@ToksNation]

I know right

[@itsamemarioanne]

YYYEEESSS! Sal is a gift for all of us x

[@jeromeyklein8838]

Maybe he just reads from a script?

[@Luka1180]

@@jeromeyklein8838 Well, he did get a Bachelor of Science from MIT...

[@notwork2087]

@@jeromeyklein8838 GFY

[@unclelelax8341]

10 mins lecture > 5 hours lecture

[@aplus1080]

Naw, TikTok brain.

[@kyloxd2700]

Anyone else feel the passion in his voice when he talks about these said topics?

[@Devilsfannumber30]

if anyone wanted to know: spliceosomes​ are what cut out sections from the RNA strand to remove the introns and leave the exons

[@schmidtythekidd]

Nerd

[@demaa.9364]

thank you i needed it for my vocab !!

[@KanekiKen-vm7zq]

@@schmidtythekidd i dont think he is a nerd tho, look at his pfp

[@akosuafrimpong4465]

@@KanekiKen-vm7zq your comment 😂😂

[@janetchiang5658]

it's so weird how you always upload topics about exactly what i'm learning in class!

[@Chef10245]

advanced biology/ chemistry topics don't change often so it would make sense

[@saniwada]

The AP bio and AP chem cuirculum dont really change or varry much school to school

[@kennarajora6532]

it makes sense he would change his upload topic schedule to coincide with what kids are learning in class.

[@nancygutierrez4856]

I have no idea how you taught me something I've been studying for two weeks in 10 minutes and I understood perfectly. I wish you were my professor! Keep it up for the pre-med students please!!!

[@smol_chilli_pepper]

I never imagined that one day Khan Academy videos would become so nostalgic to me

[@rubyyxlc3936]

I wish I would have found this while I was in microbiology, You explained in ten minutes what I couldn't even get from tutoring.

[@astrovation3281]

I like how you don't just pass on the material but also pass on the passion

[@shinysunglasses3617]

This is amazing! I found it hard to understand in class because of how shallow it was, but with more details it makes perfect sense! Thanks a lot.

[@yankeyaya1673]

same, this video is very clear o.O

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6 years and this still save lives...

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This person has helped me better understand chemistry, trigonometry, calculus, and now biology. He is truly amazing. He should be the dean of MIT.

[@angiemihalas2319]

5:55-6:27 nothing you need to take notes on, but the reminder we all need! biology is amazing.

[@Testimonyofabutterfly]

this was super helpful for learning this process! I am in awe of the creator God and his ability to make such a complex and beautiful process within such a small structure!!! Praise Jesus

[@djennings-DDS]

Great video - thank you. I liked the very clear explanation of Ribosomal RNA (that it doesn't need anything else to code, compared to the DNA where it needs Helicase, RNA Primers, Ligase, etc.) I also really enjoyed learning about the difference between the mRNA in prokaryotes vs. Eukaryotes. It's interesing that the Introns do not have a specific purpose, so the mRNA, is made up of what's left over after the splicing takes place (exons) of that "pre- mRNA". Again - I greatly enjoyed this video, thank you!

[@aplus1080]

There is no dead weight in nature. I'm curious to see the mystery of introns resolved.

[@djennings-DDS]

@@aplus1080 I’ve pretty much forgotten everything about RNA and introns

[@cristianalima6623]

I wish everything good for you, you just saved my exam! Thank you!

[@sarahfalcone8716]

This helped me a lot to understand the processes in the different cells. Thank you a lot!

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This was really helpful for my last minute exam preparations ❤️❤️❤️ If it wasn't for youtube, I would've failed my uni exams.

[@JorgeRamos-xw6dy]

Wonderful! I'm getting my KZbin degree. I navigate from MIT to Harvard to UC Berkeley etc...all for free lol. I wish this were around when I went to school. Thank you for the wonderful videos.

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thanks for my marks khan-academy!

[@rafiamushal83]

This was so helpful for my university genetics class! thank you!

[@alltup8347]

I’m literally watching this before my exam please wish me luck

[@Star-pj8fz]

what did you get?

[@alltup8347]

@@Star-pj8fz 34/50

[@Star-pj8fz]

I got a 75%. I hate biology 😂

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God Is Great, May God Bless them all and you all and your families

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Mr. Khan, you seem like an awesome human being to me. I really wish you could coach me in person. I got only 16 days left before my 12th grade final examinations start. Thanks a lot for doing what you're doing. That's really great work. Keep it up. I will donate when I am able to. ❤❤

[@Malak.A.Mudallah]

Me too as a fresh 12th grade student

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His cousins actually prefer him in videos than him in person, maybe it's the system that allows him to be as good as a teacher he is today :)

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Khan academy: You should be in AWE with this!!! *Me: YAWNs Biology: *am I a joke to you?

[@sarahholland5980]

a whole lecture made ultra-clear in 10 minutes. thank you!!!

[@chelsieb.593]

i don't know how many times throughout my biology career, I've had to rewatch this video

[@mansiraja2623]

Givee meee your handwriting 😻😻😻 and you actually have the capability of pinnng whatever you teach into my head!!

[@m.a.shahid4927]

RIP for Medved's exam, but this video made it much easier. Thanks and keep it up bro!

[@TomDavis95]

Important to note that in eukaryotes the pre-mRNA processing occurs co-transcriptionally and not post-transcriptionally!

[@kuensedn1529]

2 yrs later i watch this once again! :))

[@silvanaban5797]

Thank you for this. This was extremely helpful!

[@김소혜-s5e]

I'm Korean university student. This explainment helps for Test. Thanks.

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Trust Khan Academy to provide more information than my government :D Thank you Sal, you're a real legend.

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You should always remember that Biology is amazing. Yeah man it really is!!

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Thank you for this tutorial...harpers is quite tedious to understand...this helps a lot

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honestly as a hon bio student you save my life thank you

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Gene editing eugenics, using aborted baby cells and tissues also, GMO nanotech particles

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I love how you get excited about the material. Makes us students much more engaged and excited too. Endless thank yous Sal!!

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This man is single-handedly carrying the US education system

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sal always makes me feel safe lol

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love that my professor for my 400 level biochem class assigned us to watch this video

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This dude seriously has a video for everything

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Allah who made this incredible staff..

[@memomemo7643]

Thank you soo much that was an 1.30 h lecture of nonsense that u just turned into the most interesting and understandable information in 10.24 mins

[@ilove0918]

you should upload more of DNA/RNA in depth processes!!

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i learn more from sal than i do from my own professors

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thank you, khan academy, once again for saving my biology grade

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i rememver watching this in high school and now im in my gap years. and im. still watching this

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This video is very well done. Thank you I understood everything. I'm 14 and you explained it very well. ❤

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wish you were my instructor... i love your facination for this.

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Thank you so much for the clear and "easy to understand" explanation.

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Thank you so much for this video!! You're the best! Your handwriting is nice and the way you explain it is so much more interesting. I always have more appreciation of what we're learning because of the way you teach it in these KA Videos.

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Your videos are amazing. Cannot possibly get any simpler. Thank you. You're a life saver.

[@marygonzalez864]

Does anyone know if there is a way to get a print out of the diagrams and pictures he shows. The way he explains all the processes with those visuals really help!

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you can always screenshot and crop into word doc instantly :)

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You are very clear in your teaching Many thanks!

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This recap is just what i needed!

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Thanks for the great explanation 🌹

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Amazing sir and made my day God bless you

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This video is really helpful The way he teach is very understandable Thank you so much. It helped me a lot.

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With all these videos I don't think its necessary to go to school anymore

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You are the best teacher I have ever seen

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omg amazing Thanks from very bottom of my heart

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This is absolutely fascinating. Thanks for the great videos.

[@ruththomas5667]

SUCH AN AMAZING VIDEO THANK YOU SO MUCH!!!!!

[@mdijkman9386]

Since this video has been uploaded one thing has been discovered. In termination, right after the hairpin is formed a bunch of Adenine's are present in the DNA, this makes it so that A lot Uracil's are transcribed. The bond between A en U (also T) is quite weak, with only 2 hydrogen bonds formed. So the pre-mRNA falls off.

[@ritikasrivastava3840]

thankyou soo much for the best explanation

[@11194358]

''someone like me is going to give you these nice clean narrative'' is funny haha

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You’re amazing thank you teaching us all😁

[@clintluna6884]

Love the enthusiasm!! Awesome video! The Audio kept cutting out about every minute or so on my end, not sure if it's just me or anyone else??

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I am so grateful for your videos! Thank you!

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Gona kill my bio final. Thanks for the videos bro they've helped me so much. Very confident I'm going to get the A I need in this course!

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THIS is what's helping me to keep up with my bio class 😂

[@trensza]

Nice. This makes so much sense now

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I needed this exact video a year ago :'C

[@agnestee4261]

Thank you! That was super helpful and easy to digest!

[@edwardlazo3945]

MAAAAAAAAAN love the way you teach!

[@fersiva1]

Hi Mr Khan, thanks for the explanantion but can you explain on the process on how the cap and tail is added and their purpose in conversion of pre mRNA to mRNA?

[@evanli9757]

did you pre-draw all those shapes of ribosomes, DNA, and others?!?!?!?! that's insane

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Thanks khan on behalf of BD

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realllllllllllllllllllllllllllllllllllllllllly huge thanks, you are great and amazing teacher

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This guy is awesome...

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thanks for helping on my Biology test!

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you make mt life easy, stay blessed

[@brettisaac46]

So what's keep the Exons from floating away from each other once the introns are spliced?

[@jideo4701]

Thank you so much! I'm gonna shed a tear.

[@Jojo-kl6tx]

Awesome video, in general awesome videos. I study Applied Biology and it's great to have your videos and from there read further into the subject. Thanks a lot! (also, this is great for getting an overview since I have no idea how to get all the biology stuff in my head I need to know in three days)

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thank you very much.it helped me a lot for my exam today

[@mihirmakwana9012]

M in 1st year medicine and m watching this coz it's very helpful 🤪😅🔥

[@ElloBoppit]

It is mentioned in this video that the RNA Polymerase is more than enough to open the DNA and begin transcription. However, in my Kaplan biochem 2020 MCAT prep booklet it says that RNA Pol II is preceded by helicases & topoisomerases to address unwinding/supercoiling. So both work?

[@hannahuynh1487]

the fact that im a 9th grader having a test on protein synthesis and dna rep when med school students are here ;(

[@abdidahirmohamud7353]

thanks for the video. it really helped me a lot understanding that

[@c4sh3w]

Could you point out what MCAT stands for and what role it plays in this process?

[@alialsaeed3322]

Thanks.what is the primary,secondary,tertiary and quaternary structure of DNA??and how hydrogen bonds contributed in stability of DNA?l want answers please

[@atheeri7286]

5:28 The RNA being transcripted has the same sequence as the coding strand (with the Uracil replacing Thymine), BUT they don't have "the same information". If the coding strand were being transcribed here, it'll give a different RNA sequence, therefore a different order of codons, which eventually gives different amino acids (different protein). So yeah, not the same information =)

[@themoralshow902]

Thanks ❤️ From 🇱🇰

[@020.bharathraj.s5]

Very Good lecture. Keep it up.

[@rawannaoush768]

THANK YOU SO MUCH!!