Mitosis: The Amazing Cell Process that Uses Division to Multiply! (Updated)

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  • Published on Apr 15, 2016
  • Updated Mitosis Video. The Amoeba Sisters walk you through the reason for mitosis with mnemonics for prophase, metaphase, anaphase, and telophase. Expand details to see table of contents.👇 Video handout here: www.amoebasisters.com/handouts
    Table of Contents:
    Why is Mitosis Important? 0:44
    Why Don't You Want Cells Dividing all the Time? 2:00
    Interphase (occurs before mitosis) 2:23
    DNA and Chromosomes 2:55
    Chromosome Replication 4:07
    PMAT Mitosis Stages 5:30
    Cytokinesis (actual splitting of cell) 7:30
    We appreciate the feedback we get for what we need to clarify or should have added. Here is a clarification (also pinned in comments): (1) We mention mitosis as "a type of cell division." To be specific, it's a division happening within the cell - in the nucleus. But we do not introduce the nucleus until later on in video. Mitosis is specifically the division happening of the nucleus whereas cytokinesis follows to do the actual splitting of the cell (mentioned at 7:30). (2) Our video is intended to focus on animal cells (as drawn) - specifically human cells - as we use human chromosome numbers. We wish we had clarified that more as we appreciate the feedback that the statements, "Mitosis makes body cells. Meiosis makes gametes." has some big exceptions such as plants. (3) In metaphase, we do not draw a nucleus (6:09), because we mention it already has been disassembled. Disassembly of the nuclear membrane (envelope) occurs at the end of the previous stage. Many texts will state this is during prometaphase, a stage in between prophase and metaphase. In this short video, we do not include prometaphase. We only mention that the nucleus is no longer there by the time it's metaphase. (4) Notice our illustration in anaphase also includes a text box that says "sister chromatids separate" at 6:37. It's important to understand that chromosomes are moved "away" in anaphase, but as the text box notes, realize they are separated by the pulling apart of sister chromatids. This is especially important when comparing mitosis to meiosis I---as you can see our comparison video (which has more detail) here: ruclip.com/video/zrKdz93WlVk/video.html
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    The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: www.amoebasisters.com/about-us.html
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Comments • 2 023

  • Amoeba Sisters
    Amoeba Sisters  2 years ago +502

    Yay, here's our updated mitosis video! We appreciate the *feedback we get for what we need to clarify:* (1) We mention mitosis as "a type of cell division." To be specific, it's a division happening within the cell - in the nucleus. But we do not introduce the nucleus until later on in video. Mitosis is specifically the division happening of the nucleus whereas cytokinesis follows to do the actual splitting of the cell (mentioned at 7:30). (2) Our video is intended to focus on animal cells (as drawn) - specifically human cells - as we use human chromosome numbers. We wish we had clarified that more as we appreciate the feedback that the statements, "Mitosis makes body cells. Meiosis makes gametes." has some big *exceptions* such as plants. (3) In metaphase, we do *not* draw a nucleus (6:09), because we mention it already has been disassembled. Disassembly of the nuclear membrane (envelope) occurs at the end of the *previous* stage. Many texts will state this is during prometaphase, a stage in between prophase and metaphase. In this short video, we do not include prometaphase. We only mention that the nucleus is *no longer there* by the time it's metaphase. (4) Notice our illustration in *anaphase* also includes a text box that says "sister chromatids separate" at 6:37. It's important to understand that chromosomes are moved "away" in anaphase, but as the text box notes, realize they are separated by the pulling apart of sister chromatids. This is especially important when comparing mitosis to meiosis I- as you can see our comparison video (which has more detail) here: ruclip.com/video/zrKdz93WlVk/video.html and (5) we've learned there's a lot of debate about how one defines the term 'centromere.' We find that many textbooks refer to a single centromere on a chromosome with two fully attached sister chromatids because they are considering the complex where the centromeres are attached, and then they show separated sister chromatids with their own centromere. We have illustrated one centromere per chromosome, but we think it is important to understand this complex is where they are joined with cohesin in the case of sister chromatids--- as well as also understanding there are differences in how different resources define a centromere. You can see a conversation about this here: twitter.com/AmoebaSisters/status/1192621868605419520

  • Brian Van Kirk
    Brian Van Kirk 12 hours ago

    can certain things slow growth? i have ADHD and i take adderall so i can focus in class, and i read this paper that came with with my prescription, and one of the side affects of taking that medicine is decreased or slow growth, and it just happens i'm the shortest kid in my class

  • Hayden Friedland
    Hayden Friedland 3 days ago +1

    nerds

  • Sam Sigrest
    Sam Sigrest 5 days ago +1

    Poop

  • Sam Sigrest
    Sam Sigrest 5 days ago +1

    Your idiots

  • Tyrese Bukenya
    Tyrese Bukenya 5 days ago

    Man them finals are killing me

  • Zuha Shaikh
    Zuha Shaikh 6 days ago +1

    my mom: I told you not to watch cartoons during exams.
    me: yes but actually no

  • Becker Boy
    Becker Boy 6 days ago +1

    Science teacher: explains for 2 weeks.
    Me watches video: rethinking teachers job

  • hardik garg
    hardik garg 6 days ago

    5:36 just a videomark

  • Jack Johnson
    Jack Johnson 7 days ago

    cringe gamers

  • nello king troup
    nello king troup 8 days ago

    great video!!, it helped me alot

  • Jay January
    Jay January 8 days ago

    Hmm cell seperation?

  • Jay January
    Jay January 8 days ago

    Yack cyanide nails!

  • Jay January
    Jay January 8 days ago

    No!!!!!!!!

  • BeastBoi 00YT
    BeastBoi 00YT 10 days ago +1

    Who else found this in their recommended

  • 김명석
    김명석 11 days ago +1

    한국인 없누 ~~

  • I Fed 13 pretzels to a Cat that weighs 90KG

    The most major thing they have in common is they’re on your body WOW! SO SUPRISING!!

  • Bob Bobson
    Bob Bobson 11 days ago

    Just read this comment pls :)

  • Satyanarayan Das
    Satyanarayan Das 12 days ago

    Nice

  • Kamyron Dunham
    Kamyron Dunham 12 days ago

    COPY RIGHT!!!

  • Tayler Sharpe
    Tayler Sharpe 12 days ago +1

    thanks mrs ricci for making us watch this why we do some stupid paper but you know i have been sitting here reading these funny comments and sending them too my friend😂

  • Manisha Shendure
    Manisha Shendure 12 days ago

    Love your videos 😘you are THE BEST TEACHER

  • Frigus Frost
    Frigus Frost 13 days ago

    Thank you for the clarification for mitosis process thank you! Cytokineses is where i lost it haha simple as that phrase i truly understood HAHAHA

  • Jaden Lister
    Jaden Lister 13 days ago +1

    imma head out now

  • Jackson Cullen
    Jackson Cullen 13 days ago

    That was interesting

  • d e a t h _ s c r e a m _

    if u got ms. hodges class skip to 5:50 for the important part

  • Ghost McGhost.
    Ghost McGhost. 15 days ago +1

    7:50 Mitosis: The Last Growthbender

  • Amogh Deepak
    Amogh Deepak 16 days ago

    Amoeba sisters is the go to channel for bio for my school

  • Grace Kotei
    Grace Kotei 16 days ago

    Now i understand. thank you so much.

  • Harsith Selvam
    Harsith Selvam 17 days ago +5

    👇This is how many people are watching due to an exam coming up

  • Christian Ramos
    Christian Ramos 17 days ago

    Megalovania?

  • CONNOR MCDANIEL
    CONNOR MCDANIEL 18 days ago

    Hello Noobs

  • Alex747
    Alex747 18 days ago +15

    “You are a lot bigger than you were when you were 5 years old”
    4 year olds: Am I a joke to you?

  • MAghar Elrayess
    MAghar Elrayess 18 days ago

    Fr fr though, never met a competent science teacher in my life

  • veerabrahmam karri
    veerabrahmam karri 18 days ago

    hi keepitop but you create viedios in tpelugi

  • Frederick Albertini
    Frederick Albertini 19 days ago

    Wow. Just, just wow.

  • Vinessa Diaz
    Vinessa Diaz 19 days ago

    Thank you so much! This really helped me

  • Kitty Dragon
    Kitty Dragon 20 days ago +1

    I think that all of your students must be successful

  • Lukas Brown
    Lukas Brown 21 day ago

    good vid

  • Noori Bhai Status
    Noori Bhai Status 21 day ago

    so, u named your channel just because ameoba is simple and easy to draw?

  • Honey Peaches
    Honey Peaches 23 days ago

    These videos are gold

    • Hotpocket Jones
      Hotpocket Jones 12 days ago

      No they are not gold they are just videos.

      HAHAAHAAAHAAAHAHHA IS IS FUNNY JOKE. This is because i was taking it literally and

  • aleena zaman
    aleena zaman 24 days ago +1

    Who thought that band-aid were the ones that fixed cuts

  • Andrew Richards
    Andrew Richards 24 days ago

    Lol

  • Andrew Richards
    Andrew Richards 24 days ago

    In only 8 minutes

  • Andrew Richards
    Andrew Richards 24 days ago

    Thanks for the information😎😎😎😎😎

  • The Magic Twister
    The Magic Twister 25 days ago

    If DNA exactly copies itself then how can telomeres get shorter?

  • Solanna Soleil
    Solanna Soleil 26 days ago

    this explains better than my teacher -_-

  • Thomas Brandmeier
    Thomas Brandmeier 28 days ago +2

    0:30 That depends if the viewers are watching this because their parents allowed them to get into their devices and magically ended up finding this video.

  • moonbirb _636
    moonbirb _636 Month ago +2

    my toe sis

  • Amanda August
    Amanda August Month ago

    This video was so helpful! Thank you so much! ❤️

  • farah_wanie
    farah_wanie Month ago

    Thanks a lot💙💙💙

  • Natalia Colvin
    Natalia Colvin Month ago +1

    lol our teacher shows us these videos

  • RaphaelYeetz
    RaphaelYeetz Month ago

    o
    0
    8
    oo
    o o

  • Jesse Barrios
    Jesse Barrios Month ago

    Amazing

  • Hannah Volz
    Hannah Volz Month ago

    Bruh

  • mina abdurrahim
    mina abdurrahim Month ago

    Thank you amoeba sisters💜💜💜💜

  • William Umland
    William Umland Month ago

    What's your P.O box address so I can send Petunia a letter?

  • Oddesy Blogs
    Oddesy Blogs Month ago

    like dna in a can woo hoo

  • lol Dx
    lol Dx Month ago

    I feel very stupid watching this while im in med school lmaoooo

  • barmonkey
    barmonkey Month ago +1

    school