Molecular structure of glucose | Macromolecules | Biology

Molecular structure of glucose | Macromolecules | Biology | Khan Academy

Рет қаралды 379,175

9 жыл бұрын

Molecular structure of glucose. Monosaccharide structure. Linear and ring forms.
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Пікірлер: 86

@MrBeachwaves 3 жыл бұрын

Showing that transitional structure when glucose is on its way to making a cyclic molecule was a blessing. Really helped! Thanks

@Dretnep 6 жыл бұрын

Thank you! Great explaining, good tempo, like the dark background and you have a great voice. Please continue making such content.

@maeon3 9 жыл бұрын

The final frontier, if we can thoroughly understand this, we can help to figure out how to stop the auto destruct mechanisms in cells, also known as aging and death.

@chloesheansy9934 5 жыл бұрын

here i am watching even tho nothing is going inside my head

@suyashkanse508 4 жыл бұрын

Same here

@khadijarafi8902 3 жыл бұрын

But he was explaining so good

@shinebobby2898 3 жыл бұрын

hmm...r u that stupid?

@curiousbekishiferaw6003 7 жыл бұрын

@ 2:16 when sal count the number of oxygen atoms he was pointing at the hydrogen atoms.

@iarlaithhayes9642 3 жыл бұрын

No just a mistake he meant to point at the 2 oxygens above

@meh-oj3ub 3 жыл бұрын

Thankyou thankyou thankyou soo much. This explanation cleared all my doubts and made me find this topic literally so interesting.

@ericbckim 6 жыл бұрын

The guy narrating this is the best one from Khan Academy.

@crookshanks1883 5 жыл бұрын

he is the founder himself

@hanakinhoralinson120 3 жыл бұрын

He's Sal Khan, the founder...duh

@apoorvaganesh3097 5 жыл бұрын

It was very informative....thank u so much sir

@amshu1744 4 жыл бұрын

PLEASE ENCOURAGE STUDENTS BY UPLOADING MANY MORE VALUABLE VIDEOS LIKE THIS

@emilyklasener5429 5 жыл бұрын

great video, easy to understand! This helped a lot :)

@eric6345 2 жыл бұрын

Excellent video! Thank you

@nejatnassir2029 8 жыл бұрын

Thanks very helpful.

@whiteboardanimatorhamna 6 жыл бұрын

Thank you veryyy much sir! It was just..wow I have no words..!

@pijushbhowal6214 6 жыл бұрын

Hamna Azhar I have few words that is he doesn't speak well.

@whiteboardanimatorhamna 6 жыл бұрын

PIJUSH BHOWAL I meant no words in appreciation of the video

@whiteboardanimatorhamna 6 жыл бұрын

PIJUSH BHOWAL If you have some problem in understanding what he is saying you can turn on the Captions in Settings

@pijushbhowal6214 6 жыл бұрын

Hamna Azhar Just JOKING . Why taking so seriously Man.

@Biotechnology-hs7wx 8 жыл бұрын

why is the hydroxyl group of carbon 3 on the left hand side whereas the other hydroxyl groups are on the right?

@OmegaHunter08 7 жыл бұрын

because otherwise it wouldn't be glucose. It would have different properties (like a lower melting point), be a different monosacharide, with a different name. . You may not need it, you probabl already figured it out yourself, but here is a link ( read the first 2 comments) : chemistry.stackexchange.com/questions/57927/why-is-it-important-that-glucose-s-third-oh-group-points-to-the-left glucose has 4 chiral carbon atoms and 2 that are not( the 1st and 6th). the position of the hydrogen atom or hydroxyl group on those 2 is unimportant (i think), while on the other 4 the position does matter. At least thats what I have learned.

@chewch3518 7 жыл бұрын

This whole thing finally make sense to me 😂 THANKS A LOT!!

@suyashkanse508 4 жыл бұрын

Kya be

@katnap8354 2 жыл бұрын

Great video!

@youtubec8563 5 жыл бұрын

5:55 to see chain to cyclical

@freddiem6805 5 жыл бұрын

GOOD JOB .KEEP IT UP

@ntdforall655 4 жыл бұрын

Epic!!! Thanks man

@vincentleong0511 Жыл бұрын

Extremely useful video

@asteroid6640 2 жыл бұрын

great video!!

@timeless_realm 9 жыл бұрын

Thanks for the information. Why did you count C3 as having two oxygen's?

@bajer111 7 жыл бұрын

brain fart

@iraevid13 3 жыл бұрын

Good Video

@nocturnalpirateoftitan5923 3 жыл бұрын

Great

@MrBeachwaves 3 жыл бұрын

Why can't the oxygen at 7:17 take the proton away from the oxygen that will have an extra proton attached to it at 8:28? Thanks

@moeezkhan9637 6 жыл бұрын

Love you :*

@flawfulpractice8381 6 жыл бұрын

I have a question why the aldehyde group of glucose reacts only with last chiral carbon hydroxy group, not others?

@kalpeshkumarnakrani1663 6 жыл бұрын

1st carbon has an option to react with either 4th or 5th carbon. it can not react with 2nd and 3rd carbon because 2nd and 3rd carbon are too much near to the 1st carbon so there can be a stearic hinderance to glucose carbon skeleton for the sharp bend. whereas on 4th and 5th position, there is no need to take sharp turn so such bonding is preferred. if c1 makes bonds with c4 carbon it is glucofuranose and if c1 reacts with c5 it is glucopyranose.

@chessforfun5394 4 жыл бұрын

Can u tell me which software you use for these classes?

@rajaneshkumar5177 3 жыл бұрын

Good

@aeroscience9834 9 жыл бұрын

Why aren't these recent chemistry videos in the chemistry playlist?

@TheKvacKaj 9 жыл бұрын

Aeroscience they are in Biology->Macromolecules

@garamyoon7263 Жыл бұрын

Can other carbons bond with the number one Carbon?

@kawther2728 2 жыл бұрын

Thaaaanks

@elricdrick6821 5 жыл бұрын

That is a extra bright yellow

@phoebemoore1516 7 жыл бұрын

it if I just saw the cyclical structure I wouldn't recognise that as glucose because there are 10 hydrogen atoms ;-;

@VAISHALISHARMA 3 жыл бұрын

but i think could have been better if you just have said carbon at fifth position and hydroxyl grp attached to it get in reaction with carbon at first position. hydrogen of that fifth positioned hydroxyl grp get along with oxygen of carbonyl and oxygen of that fifth positioned carbon gets stretched upto making bond with carbonyl carbon. as simple as that. why to trip over words?

@wendiz2075 6 жыл бұрын

Super clear! 😊 Thank you 🙏

@bansaripatel1583 6 жыл бұрын

Hii

@strangelight159 6 жыл бұрын

At 8.09 why does he say,O has a positive charge?How can that be possible?

@hannahlopez3411 6 жыл бұрын

the carbon not the oxygen

@sherazkhan2802 6 жыл бұрын

He means if there was that hydrogen bonded to that oxygen, the oxygen would have a positive charge. But since the oxygen has let go off that hydrogen so it doesn't have a positive charge.

@sabrieal3040 5 жыл бұрын

Can glucose react with lipids and proteins?

@crookshanks1883 5 жыл бұрын

@jahreal9463 6 жыл бұрын

Is glucose hydrophile or no

@danishnadeem1343 3 жыл бұрын

Why does it has to be the 5th oxygen molecule not other?

@danishnadeem1343 3 жыл бұрын

@steph mason thank you.

@venkatnihar2854 4 жыл бұрын

so iam an aldehyde or an alcohol

@PhotonAvogadro 4 жыл бұрын

Do high schoolers do this in America? In Japan high schoolers have to learn organic chemistry etc.

@monyrithyhour195 3 жыл бұрын

??? This is Biology not chemistry though I think it's related somehow.

@PhotonAvogadro 3 жыл бұрын

@@monyrithyhour195 It’s considered as chemistry in japan though We also learn other substances such as amino acid, oil, etc.

@monyrithyhour195 3 жыл бұрын

@@PhotonAvogadro Ah ok.

@buryakulikov2415 3 жыл бұрын

@@monyrithyhour195 This is chemistry though, organic chemistry to be exact. But because it's relevant and important for the following biology lessons on Khan Academy, they added it to the biology category.

@monyrithyhour195 3 жыл бұрын

@@buryakulikov2415 oh ok thank you for informing me

@1piece_lufzo 3 жыл бұрын

Plz teach us in hindi language or start subtitles in hindi

@catsareawesome1569 5 жыл бұрын

What grade level is this

@adenzewdu3564 3 жыл бұрын

@joseocampo7166 9 жыл бұрын

First

@novelyst 4 жыл бұрын

car-bow-neel? I've always said it car-boh-nil. Odd.

@AdityaSingh-up7in 7 жыл бұрын

video is amazing. but if paper is white and language is somewhat in Hindi. we understand better😊😅😊😘😚😘😍😋😊😘😘😊😋...

@basilshibu5673 6 жыл бұрын

lodu

@pijushbhowal6214 6 жыл бұрын

Aditya Singh bhai kya bakwas emoji dali hai. Thora mahol ke hisab se samajhkar dalta.

@meh-oj3ub 3 жыл бұрын

@@pijushbhowal6214 ik sara mood kharab kar diya🤦‍♀️😂

@lindsayaustin4528 7 жыл бұрын

You trip over your words too much, too hard to learn from you. you should practice before you film

@pijushbhowal6214 6 жыл бұрын

Lindsay Austin you are so true lady.

@Dretnep 6 жыл бұрын

I disagree, i tend understand these concepts far more quickly and thoroughly than during most of my lectures. I think he's great at painting a picture in my mind, i do not even notice him tripping over words.