Plant cell walls | Structure of a cell | Biology | Khan Academy

[@kilroywashere1628]

The stability and hardness of wood comes not so much from the cellulose in the secondary cell wall. Herbal plants also have cells with secondary cell walls but they aren't nearly as hard. What is special for wood are tertiary cell walls in xylem cells. The cell wall incrustinates a molecule called lignin and the protoplast itself dies off.

[@pomi6320]

Yah lignin is the main reason plants can even get water as it is responsible for the band of suberin, the Casparian strip - which will close the apoplast pathway- and in older cells completely suberised cells the symplast and apoplast pathways are both blocked and passage cells keep symplast pathway open. Lignin is a very important thing.

[@ClarkPotter]

You guys are awesome.

[@AbdullahArif-t5s]

@@ClarkPotter fr

[@JosiahFickinger]

I'm sure everyone else is here for school. I'm here because of curiosity. In school they left us hanging on the fascinating structures of the actual sub parts of cells. I'm just fascinated by the complexity God built into these cells.

[@susannaparham309]

Ik, right? Can't believe that so many people deny his existence!

[@A73X4ND3R]

What an aesthetic diagram you've drawn there Khan

[@al-zahrawi2545]

I really hope u can make a video more in deep about cell wall there is not much content about cell wall out there please do make a video on cell wall and its layers middle lamula, primary secondary wall

[@geraldinevillegas2485]

Thank you!! I'm actually writing my dissertation and needed some freshen up on basics. :)

[@saeedalvi6463]

what is dissertion

[@Tejano._.]

So intricate سبحان الله

[@raspb3rry_sky]

Thank you!! It was way more understandable than what we did in class :D

[@بوحمد-ه3م]

Thanks for explaining I’m studying for my science homework this helped a lot ❤️

[@jecoreytherandom2836]

Same

[@forwardever7926]

the secondary cell wall is actually between the cell membrane and the primary cellulose cell wall

[@shrooqelgohary1694]

Yess this confused me as well

[@vishugupta788]

well explained man!!

[@lisje2496]

Thank you! Very well explained!!

[@unsakhan1004]

brilliant explanation !!! Thankyou soooooo much

[@wild23oo]

I am going to make fast video so at last i will be successful. I hope

[@padmagiri9150]

Very good imagine !☺️☺️👌👌nice

[@Raelade]

bro knows everything

[@mediocremedico2421]

Thank youuuuu

[@sneakyninjaaa9773]

Thank you for the explaination

[@shrooqelgohary1694]

Can someone explain what is the cylinderical structure of cellwall layers..why are they drawn that way in some places? Where in the cellwall is that?

[@FootyAbbas]

Ayeeee ma boi Sal is hereee

[@tamerzaghlol9461]

Thanks

[@amrith__________________]

Actually that's not golgi apparatus, cuz plants dont have em. Instead they have - Dictyosomes

[@Shimulnath96]

Thanks ♥

[@Jasmine-tr7yf]

great explanation - thank you :)

[@emlmm88]

So plasmodesmata are basically the equivalent of Plant lymphatics then?

[@gaelledabeecharun8989]

emlmm88 plasmodesmata are the equivalent of gap junctions in animal cells

[@indovineloo]

thx for subtittles

[@arjunck1447]

Does all plants have cell wall

[@weberelireal]

cool thanks!

[@shreyanshpanda1776]

SAL KHAN IS BEST

[@monikagrigorova485]

Half of the video is not an explanation of cell wall.... :D

[@realdealholyfield9616]

Could you not afford the money to pay the internet bills and watch the rest of the video?

[@gloriaatim6072]

Thanks

[@miracleism76]

So trueee

[@johntindell9591]

thank you so much

[@shrutyshubhangi9403]

Very useful video ☺

[@BioChemWala]

how cell wall grow because it is non living

[@fadyhameed3296]

thank you

[@francesco6229]

Wood

[@malikbasharat7119]

Good one

[@malikbasharat7119]

Nice

[@aliabdalkhaled]

pls add arbic tran..

[@anviil1417]

I'm a plant

[@gousiask5033]

is cell wall fully permeable or semi

[@nakshatra7800]

fully

[@sonalsonakshisingh8516]

semi

[@vvx-1711]

Plant cells walls are surrounded by SOMEONE ANSWER MY Q

[@unsiyabatool6043]

Protoplasm

[@hanadmusharaf]

hi

[@tamerzaghlol9461]

Allah Akbar

[@malk2718]

well i am 4 lol lo lol lol

[@FatalFlaw001]

Eh sup mannn

[@ezlove6342]

Guck

[@quinnthereaux7719]

mmmmm time for a salad

[@alexd7231]

Thanks it helped me a lot THANKS

[@NIPOON_nhoon_THOMPAT]

Thank you so much

[@FahimAhmed-ep6uh]

Thank you, a great explanation !

[@jclaer]

Thank you

[@Arham1716]

THANK U SIR!

[@aena_]

Thank you sir