Mitosis | Cells | MCAT | Khan Academy

[@darkrebel123]

I love when you hear him nerding out getting all excited explaining why something is important.

[@andhapaisa260]

Same bro i like the way he talk

[@misbahkhanum391]

Exactly

[@Cars2155]

what I learned from this video: chromosomes are not magenta colored centrosomes are not to be confused with centromeres

[@natashavernon9828]

You should have a podcast ! Thank you so much . You have no idea how many students around the world that are blessed because of you .

[@Becca_Lynn]

These videos are SO incredibly helpful! Short, to the point, and very well explained. Thank you! :)

[@sundareshans9926]

nice one

[@pearls27]

Becca p

[@นายชอนปรารถนามอร์ฟีน]

true!

[@reneelewis9346]

Thank you so much for explaining this. I spent almost all day trying to figure out the roles of the centrosomes, microtubules, and centromeres were!! It's hard to visualize what books are trying to describe. I am more of a visual learner, so this helped so much!!!

[@vanesalozano1786]

Same 😭

[@kyletomlinson5365]

7:05 lol Sal says "what's going to happen next" 4 times

[@matthewbain9359]

The suspense

[@thegamerbrothers4597]

Lol

[@michaelb8924]

He repeats everything quite frequently in order to emphasize the steps. But sometimes, like in the case that Kyle pointed out, he is just stuttering lol

[@venaelmasry7214]

Kyle Tomlinson d

[@thenutritionresource8041]

REMIX!!!

[@rossie_2027]

Just a tip to differentiate between centromere and centrosome centroMere - middle (MIDDLE of sister chromatids & cell) centroSome- Side (sides of sister chromatids & cell). I hope this helps.

[@thenutritionresource8041]

I'm making it magenta... bc it looks nice... Indeed, it does look nice, indeed

[@bethford1150]

Amazing video thank you :) If anyone is in the UK studying A-Level Biology you also need to know that animal cells cleve from the outside in, and plant cells cleve from the inside out, laying down platelets of cellulose. It was a question that came up on a paper a few years ago and caught people by supprise!

[@VSPG_SIVANI]

Sal loves magenta!

[@747Sean]

but does magenta love Sal

[@almasdp]

when people they put out this long presentations with so much info in them, they are hard to follow. they are all so worried about sounding academical and the message gets lost. but not with you. you are awesome.

[@nisthak.5787]

Taking a science test tommrow and this really helped me as well as all the other videos khan academy has to offer? I use their videos mostly for my algebra 1. You guys are the best keep it up. (Inspiring nerds like me everywhere)😂

[@استغفراللهواتوباليه-غ2ل]

سبحانك اللهم وبحمدك نشهد ان لا اله الا انت نستغفرك ونتوب اليك

[@miss-sunshine]

This is sooooo crazy wow god created us perfectly subhana Allah 🤌🏻🤌🏻and thank you , you explained this lesson briefly, in an perfect and enjoyable way 🤍

[@eztosay]

I Picked Me A Tasty Cookie Interphase Prophase Metaphase Anaphase Telophase Cytokinesis

[@0114mercury]

Thanks for explaining mitosis. If you don't mind, I would like to ask a few questions for clarification: 1) Two sister chromatids, are they exactly identical, or are they "complement" of each other, A being paired with T, C with G? If sister chromatids are exactly identical, what bond makes them stay together? 2) I watched both Mitosis and Meiosis video. Where does the concept of "double helix" comes into play?

[@SummerStrong82]

the swallowing makes me want to scream... HOWEVER your videos have helped me ALOT - Thanks a Bunch!

[@emilydyos3043]

These videos make complex concepts so much easier to understand. Thank you so, so much! I can't believe how much I enjoy watching them. I choose them over my lectures any day! This is HEAVEN to the visual learner, which is the best way I learn!

[@alexandrathegreatestperson]

Taught me more than my biology teacher did

[@SXB_zz]

same🤣🤣

[@janeeshajyotsna492]

I just have one small doubt... what happens to all the organelles in the cell when mitosis happens? Do they disintegrate along with the nuclear membrane? However, your videos are extremely well depicted and a great way to study! Hope you keep up your good work!

[@whatever-nr3tb]

They also grow and synthesize like mitochondria in G1 and G2 phases

[@rahimashaikh1722]

This helped me so much . Thank you so much . I finally understand .

[@RachelNicole5]

Thank you so much for these helpful videos! I'm a visual learner and I couldn't get through college without KZbin! Only thing, with this video, you didn't mention the Prometaphase stage, which I need to know for class...there are 5 stages to mitosis, not four. Still a helpful video.

[@marie-eve8863]

Really depends on the teacher

[@taystar957]

These videos are the reason i am not failing my classes

[@noahmahler]

this guy knows how to explain stuff, i have never understood this. Now after just one video I get it

[@AnnoyedAtEverything]

Much more helpful than just reading the slides my prof provided. Thank you!!

[@eventsharku5436]

i thank god your channel exists

[@Minecraftj-qk4if]

2:53 What is Newton's First Law? Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia. The key point here is that if there is no net force acting on an object (if all the external forces cancel each other out) then the object will maintain a constant velocity. If that velocity is zero, then the object remains at rest. If an external force is applied, the velocity will change because of the force. So what external force acts upon the cell to do Cytokinesis do you know what kinesis means in Greek? It means MOTION "Scientists are still trying to explain HOW this process works" Here is the twist, they do know, they just won't accept the truth keep in mind, no cell has a brain by its self so how can everything in that cell move without an intelligence behind that? they can't not without help from the creator, God himself hear me out, how many parts of the DNA sequence are there? FOUR how many rectangles extend outward from the cross that Jesus died on? FOUR just saying

[@serarv9346]

You just saved my life. Thank you

[@mbb8201]

Thank you so much! I have a test in cell biology this week and these videos are so helpful!

[@MehediHasan-ds5lz]

Besr lecture I have ever seen on mitosis(from Bsngladesh 🇧🇩)

[@changethegame8139]

Prophase Sister chromatids (DNA) go from being in their spread-out chromatin form, to a more condensed form that can be seen from a light microscope, connected at the centromere. Nuclear membrane/envelope starts to go away. Centrosomes migrate to opposite sides of the cell. Mitotic spindle begins to develop Metaphase Nuclear membrane is now gone Chromosomes start to line up in the middle of the cell Centrosomes are at opposite ends of the cell Microtubules extend from centrosomes to the other centrosomes and centromeres. This helps steady the tension of the cell, making sure everything stays in the right place. The mitotic spindle is now fully formed and three groups of spindle microtubules should be present. Next anaphase DNA separates and migrates to either side of the cell. Microtubules from the centrosome begin to pull on the sister chromatids, separating them into independent chromosomes. The point at which the spindle fibres attach to the sister chromatid is known as the kinetochore. Cellular membrane begins to pinch inward at the centre point, preparing for the cell to split into 2 (cytokenises). Telophase Nuclear membranes form around the DNA. DNA goes back to its chromatid form. Cytokinesis occurs

[@SamraAftab-q7h]

Thanks a lot dearr❤

[@jun5370]

This helps so much! Thanks! Cheers

[@logansmith3850]

There is a God.... :0

[@rebeccam383]

proof through science :)

[@rofenamaw0]

Logan Smith how is that obvious??

[@NatureNow-k4q]

Yeah right. It's Logical

[@Yo-ut4de]

It is Khan Academy 😊

[@michellemazzyy]

truly an artist..

[@CameronTrendell]

THANK YOU SO MUCH! I have a test tomorrow and this is a really good study technique.

[@RamandeepKaur-mh4zw]

Make it so easy to understand..thnks

[@imharmless1451]

Thank you so much. Our school has to take standard tests to graduate and this helps so much. Now, off to Meiosis!

[@shannons2006]

Omg thank you for making these videos! I have a test on mitosis and meiosis tomorrow and it was super confusing but i totally get it now!

[@kellyrehak]

this is the best video ever, very informative and FUN. saved my life in ap bio and now i love the color magenta. 10/10 would watch again and again. what a good time best teacher EVER!!!!

[@wendysturd]

Thank you keep up the awesome work. I feel so much more ready for my big test coming up having watched your videos.

[@MussaPhiri-b1u]

Oh wonderful teaching

[@นายชอนปรารถนามอร์ฟีน]

The best vid for mitosis explained! I really thanks of your vid.

[@sneshmamvelase483]

Thank you #mitosis made easy

[@beboou8572]

Thank you for saving my life ❤

[@notreally5255]

THANK YOU FOR YOUR EXISTENCE

[@Talhasait]

Does Metaphase comes after Prophase? because in my book it says that Prophase is Prometaphase!

[@16nilofar]

You can use this abbreviation to remember the stages of mitosis: P-MAT. Proprophase is not exactly a definite stage imo, it's more of a transition into prophase. However, PMAT= Prophase, Metaphase, Anaphase and Telophase. Hope that helps :)

[@kipling1957]

I think there should be another name for a "chromosome" when it is replicated into two sister chromatids (duosome?). This new entity is essentially two chromosomes lassoed together and yet we still refer to it as "a chromosome", which can be confusing for students when describing mitosis/meiosis.

[@shaistarija7904]

A very helpful video wellexplained in a very short time

[@thrsonlytoday]

Best Explanation Ever!

[@janellemiranda2379]

he makes everything so simple and basicccc good job

[@TacticalDraws]

Thank you very much for the video, I struggled to comprehend mitosis from textbooks and lessons but this was very well presented

[@ishajoe101]

Omg this video helped cleared up all of the confusion I had, thank you!

[@14bsairane56]

You're the best teacher!!

[@finanmclaren]

Thankyou Sal!!! you explain things so well for me.

[@drsultansaudagar2733]

THERE ARE NO WORDS TO APPRECIATE YOUR WORK......👍👍👍👍👍👍✅✅✅✅✅

[@sleepybutstudying2095]

This video was well explained, and I never got bored. Thank you!

[@manyajonnalagadda3662]

My lord and savior...Sal

[@damodarshanbhag3476]

Thanks helped understand my lesson in more detail with clear view 👍👍

[@noirerequiemii101]

Using this for addition biology notes... I have GCSE exams soon 😊

[@sanakhan1209]

Amazing effort...

[@mayanaqvi2912]

just wow. Thank you very much . you explained v well. even you emphasized those things every time where we can confuse like centromere centosome etc . Literally i can say that with the 16 years education i always confused about chromosome form now you cleared the concept about chromatid that this is also called one copy of chromasome . Thank you very much. sometimes we confuse even with very little things but you also clear little things. This is my first time when i heared your lecture and became your fan

[@jobassist2007]

This is extremely useful for me

[@sadiajunaid3818]

That was very helpful. These videos are very well explained. Thank you😊

[@nupurfunkwal9899]

Brilliant explanation sir!!

[@Miriamono565]

This is video is great , thank you. Question: Why does DNA have to be compacted?

[@aoishikasrivastava5782]

superb video.....gud for bio students

[@bakhtavartahir]

thank you so much sal! this really helped me!

[@reenasinghl8789]

Incredibly helpful👌👍

[@maryamsediqi3625]

Your explanation is just amazing ♥️🙏

[@mathewdaly8515]

I LOVE Khan Academy.

[@jasminer8419]

I finally understand thank you!

[@gabrielh5105]

Thank you, this was very useful to me.

[@AndroidIdentity]

8:50 Whoever said there was ANYTHING "basic" or "simple" about cell division/cell cycle was either really cocky or had no idea what they were talking about.

[@GiuseppeLospalluto]

Fantastic!

[@saharaara1700]

Awesome, thanks!! 👏🏻

[@rebeccam383]

Thank you! The way you explain things makes it really easy to understand:)

[@someone-jl9fu]

Awesome, thank u 💞

[@abcdbcd1020]

Very good! Continue... Good Luck!

[@luserwiser324]

Nice explained

[@laurensmeda4727]

Thank you so much for going into all the details and explaining it! I really appreciate how much work you put into these videos!

[@maryanjama5092]

Thank you so much these videos are amazing!

[@shr90602]

Hi. I did indeed enjoy the video, but it left me with a couple of questions: 1) when a cell replicates, does the old cell die? or at what point does a cell die? I imagine cells can't keep replicating or we would eventually get very big and blow up. Thanks, Stan

[@KrashrSabba3]

Stanley Ross mitosis produces 2 'daughter cells' from one cell. so after mitosis, there is no "old cell".

[@azadkaya]

Stanley Ross No cell dies.

[@KrashrSabba3]

Azad Kaya cells do die, but not during mitosis. Thanks for adding that.

[@azadkaya]

KrashrSabba3 Yes of course not during the mitosis my bad :)

[@alexiacase6732]

great drawings and explanation, also very cool handwriting! thanks for the help.

[@satisfyhelter-skelter4666]

Thank You

[@EclipZeMuzik]

dude you're amazing i love this!

[@tusharpal5431]

question . for cytokinesis, except for the centrosomes, do other organelles replicate?

[@MadXperts]

NO

[@tseringchoetso1961]

m going to crack this mcaattttt

[@mikiasassefa7267]

tnx man

[@danielleg7062]

Thanks!

[@tharindu4685]

very nice video 👌👌

[@HamnaAzhar7]

Thank you very much sir! love your lectures. I'm so grateful for these videos. These help me v.v.much

[@San30025]

never expect to find zhongli teaching biology here

[@zackcleary4106]

"You'll see this in the cell - it's unlikely to me magenta!"

[@roseb2105]

so mitosis starts with 92 chormosomes ( 46 pairs) inorder to divide into 2 cellsÉ

[@estimatingonediscoveringthree]

Essentially every aspect of the “how” of mitosis is not understood I wonder what part of this process evolved first , lol. Explanation for the simple- evolution.

[@gursheen24]

Thankyou!💙

[@BenCreaven]

Thanks a mill

[@lukamaksic4349]

thank you very much

[@noorj7782]

Wow everyone that’s good in biology is a genius, in my opinion 😂 I envy this guy 😂

[@jeavon69]

3:33