Mitosis: How One Cell Becomes Two

Рет қаралды 300,150

Күн бұрын

We know that we are made of cells. But we start out as just one tiny little cell in the womb. How does that become enough cells to look like a baby? And how does that baby get enough cells to become an adult? The answer is mitosis! This is how cells divide to produce new cells with all the DNA for that organism. How does this work? Let's find out!
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Пікірлер: 107

@cassied9327 5 жыл бұрын

I like to watch these the night before my teacher discusses that topic in class. It makes the note taking and information processing so much easier because you feel like you have an overall / general idea of where it’s going. It also helps me understand any reading we have for the topic.

@NINJA-tf6bf Жыл бұрын

Thanks for the Tip 🙂

@taylorbarnett1199 4 жыл бұрын

I would like my diploma now, professor Dave university. 🎓

@boxer8657992 Жыл бұрын

📜

@_kritikashukla 8 ай бұрын

@@boxer8657992😅

@shylalang7869 2 жыл бұрын

So glad I found this channel.. I have a exam on Tuesday and for once this entire semester I actually feel confident in the test

@alisonc6573 6 жыл бұрын

Professor Dave is saving my life since my first year at science school. Thanks !

@jcbradley1386 3 жыл бұрын

My textbook's diagram for cytokinesis was colored wrong. What I mean by that is the cytoplasm was tan with brown nucleus's, and it really looked like a *different part* of anatomy, even my mom noticed

@omwadhwani1418 6 жыл бұрын

very nicely explained and presented..... keep posting such videos.... thanks professor DAVE

@bippy201 5 жыл бұрын

Well I’m back. These videos taught me what I needed to know in AP Bio & now they’re helping me review with my college biology class!

@son5051 3 жыл бұрын

WTF.. where i live this is learned in 6th grade

@joe-ib1wn 10 ай бұрын

@@son5051 where i live we learned a simplified version of this somewhere around 8th grade, and a more in-depth version (closer to what is described in the video) in the final year of school.

@willieriggi 10 ай бұрын

Learning is ongoing, check out wether you knew everything about this process. Don't do any comments, you can learn it on college or either in primary and secondary stage.

@knockknock75 3 ай бұрын

I wish you would've learned that everything you think didn't need to be shared. It came off as if you were belittling the person who's content you are responding to. Your comment was in no way helpful. @@son5051

@Gloxx09 Жыл бұрын

I liked the explanation very nice and understandable!!

@tanadabrandonlouiso.3971 Жыл бұрын

thanks man i highly appreciate your contents

@rochelroma180 3 жыл бұрын

thank you professor dave

@esthertusasiirwe8515 5 ай бұрын

Dave never disappoints

@jerrypie 6 жыл бұрын

A question for your next ask Dave video: How did you study back when you were an undergrad? Like your specific study routine. I'm looking to try new things since I'm making poor grades as a college freshman right now. Edit: Or it doesn't have to be in the ask Dave video, just a question in general.

@ProfessorDaveExplains 6 жыл бұрын

haha oh man, my answer would be: not very much! i was much more concerned with playing in bands and having a good time. i basically "studied" just enough to get straight B's, so i'm no authority on study habits. don't tell anyone!

@bippy201 6 жыл бұрын

I’m struggling right now with AP Bio (probably mostly because of senioritis honestly) But I’m finding these videos are really helping with studying, we don’t get very many visuals in class so Professor Dave’s videos make more sense then some of the stuff my teacher explains lol

@ayomidegnadenla9784 7 ай бұрын

@@ProfessorDaveExplains🎉

@musicloverhayat8402 3 жыл бұрын

You made me say woww😳😳 your videos are literally amazing.

@artemisnezafati6140 4 жыл бұрын

thanks for this useful video

@enochbrown8178 Жыл бұрын

Very good. Thank you.

@maryonyator-brown2623 15 күн бұрын

Thank you so much

@errebusaether 10 ай бұрын

My brain cells right now: 🗿

@user-if7tq7bh6v 6 ай бұрын

THANK U SO MUCH MR 😍❤

@MikaCloudz. 7 ай бұрын

I have an exam tmr, you explained this better then my teacher did in 2 classes spanning 4 hours

@grout6924 Жыл бұрын

I've been watching your pseudoscience videos for a while but this video really helped me out in a pinch. Missed a couple days of school and you explained everything eloquently.

@nu.ri22 Жыл бұрын

Thank you so much sir🙏

@Omar-Khaairy Жыл бұрын

Thanks so much

@bippy201 6 жыл бұрын

Thank you thank you thank you!!!

@maddiesilvester8230 4 жыл бұрын

Im kind of confused, in my textbook it says that the DNA is condensed during interphase into chromatin, but in the video I think he is saying that it becomes condensed at the start of mitosis (after interphase) - can someone pls tell me when the DNA is condensed and when it is not

@thisisgangadhar 3 жыл бұрын

In interphase(s) amount of dna is doubled, in prophase dna is condensed, Probably u read it wrong

@user-dv3pf7bi2l Жыл бұрын

Nice lecture! Thanks!

@user-yv3ct8hj8c 9 ай бұрын

Thanks so much...

@richardzuo7200 2 жыл бұрын

Thanks!

@Miaisha100 3 ай бұрын

Mr. Dave Thank youuuuuuuuuuuuuu !!!!!!!!!!!!!!!!!!

@user-ul5pt1yb8z 8 ай бұрын

Thanks a lot

@milaivanova2176 2 ай бұрын

saved me so much time lmao tysm :,)

@Traumbewusstsein 2 жыл бұрын

Thank you, very clear and concise! What interests me is how did scientists found out about these processes. Was it all observed by microscopes? How do you observe something like a living cell with a microscope? What ideas were developed first, what model is still in need of further investigation?

@ProfessorDaveExplains 2 жыл бұрын

Yes we can watch these cellular processes in microscopes! They are pretty well-understood at this point and unlikely to be revised in any significant way.

@willieriggi 10 ай бұрын

👍

@iwannadiern2006 Жыл бұрын

رَبي يوفقك، شرح ذكي جدا

@shivapriya8058 6 жыл бұрын

what happens to the mitochondria, golgi complex and ER during mitosis? Do they also split with the nucleus during metaphase?

@shivapriya8058 6 жыл бұрын

sorry for asking so many questions but your videos are really prompting me to think!

@TheShambu13 6 жыл бұрын

SHIVAPRIYA THILAKAN

@RavinderSinghShekhawat0402 5 жыл бұрын

Yes they also replicate in interphase

@melvin5007 2 жыл бұрын

@@RavinderSinghShekhawat0402 yup, especially during the G2 phase of interphase

@nikhilsaridena 4 жыл бұрын

what happens to the cell membrane in metaphase.

@Hot_Grill43 Жыл бұрын

Question: what happens to the atoms of the cells when the undergo mitosis (or meiosis)

@jyor543 11 ай бұрын

They do the stanky walk and get tf up outta there

@faithshiko5228 8 ай бұрын

Perfect

@aasmashahid787 6 жыл бұрын

Very gd lecture

@4sjha312 Жыл бұрын

Hey prof, what's the difference b/w spindle fibers and aster?

@NINJA-tf6bf Жыл бұрын

Aster is just centrosome with astral rays

@stel1236 2 жыл бұрын

Tuition money is going to the wrong people😩 best Professor out here👏🏻👍🏻

@just7815 2 жыл бұрын

other things later but why is it mytoesis? why not mytoesare?

@1gam875 4 жыл бұрын

I know it's too late but could you please tell the enzyme that helps in breakage of the chromatids

@ProfessorDaveExplains 4 жыл бұрын

hmm i think it is separase but double check

@1gam875 4 жыл бұрын

@@ProfessorDaveExplains thank you so much

@ymiixra5008 10 ай бұрын

well explaineddd sheesh

@tahirtantary7438 4 жыл бұрын

Love u bro

@joseluissileboriaco7603 6 жыл бұрын

fascinating, very good video. If sperms do not divide, how are they created? Are spermatozoids cell? what about ovules?

@ProfessorDaveExplains 6 жыл бұрын

don't worry, we cover most of that in the next clip!

@NA-vk1ml 3 жыл бұрын

I have a question, so we grow through the process of mitosis, which means that cells are always Identical. So why do we age? Just curious.

@BolasDaGrk 2 жыл бұрын

That's based upon telomeres. Picture telomeres as an aluminium chair legs "plastic cap ends," which is normally there to keep from scratching the ground. This cap, instead, is attached to your chromosome (rope-like) tips. Example would be to picture four telomere caps at the end of chromosome (diploid) ropes that cross each other. This prevent the threads of protein/DNA from fraying on the ends of the rope. When the telomere cap wears down, the end of a rope begins becoming exposed and increasingly frays as DNA is exposed and is untangled. This disorder leads to imperfections in DNA, and hence the aging process. In the meantime, an enzyme named telomerase helps protect and repair telomeres, maintaining youth until the telomerase enzyme fades away because there is not enough keeping up with sun radiation, and constant oxygen metabolism that leads to free radicals and further mutations. Further imperfect copies of cells, over time, then lead to a carcinogenic cells during a mistake in mitosis. So we, in theory, may be able to slow or stop the aging process and cancer due to this telomerase enzyme being somehow distributed in high doses in the body.

@BolasDaGrk 2 жыл бұрын

Oh yea, and I completely forgot "stem cells." That stops around 25yo on average. Stem cells are just clean slate cells that can go anywhere and start replicating cells of any tissue. If we use it medically, I think it is called stem cell rejuvenation. My guess is the primary reason for women living longer than men on average, is that when/if they are pregnant, the baby can donate stem cells to the mother and rejuvenate any damaged tissues, leading to more efficient reparations than males who don't have this benefit.

@ItsEverythingElse 6 жыл бұрын

How does something so magical and complex just evolve by chance?

@ProfessorDaveExplains 6 жыл бұрын

over about a billion years and through many intermediate stages!

@ProfessorDaveExplains 5 жыл бұрын

Yeah bud.

@ProfessorDaveExplains 4 жыл бұрын

No, you know nothing. Scientists know things. You can learn those things by learning science. Also, I'm not sure that you know what cynicism is.

@mhb.i 2 жыл бұрын

@@ProfessorDaveExplains can you answer why the things are the way they are?

@ProfessorDaveExplains 2 жыл бұрын

Wam, you go right ahead and bury your head in the sand. The rest of us will advance human civilization for you. In the meantime, stop projecting your profound ignorance onto the human race, ok bud?

@adanzaheer4257 6 жыл бұрын

omg love this thank u professor Dave it is extremely helpful

@darennickle6433 Жыл бұрын

So when you say there are 2 copies of every chromosome floating around in the beginning does that mean there are 46 total strands floating around. 23 from your dad and 23 from your mom? So for each of the 23 chromosome there is 1 copy from your mom and 1 copy from your dad, meaning 23 pairs or 46 individual strands. Am I understanding this correct?

@pastimepursuit7212 3 жыл бұрын

P: 2:08, PM: 2:23, M: 3:10, A: 3:36/4:00, T: 4:26, C: 5:02

@mikewazowskijr.9324 3 жыл бұрын

Sir may I ask a question..how long does the process take?

@koladeogundana1864 2 жыл бұрын

about 1 hour

@AlexTrusk91 4 жыл бұрын

But how do the chromosomes arrange so nicely?

@cocococoa3561 5 ай бұрын

the nucleaious

@shivapriya8058 6 жыл бұрын

does mitosis happen in the case of identical twins?

@ProfessorDaveExplains 6 жыл бұрын

yes i believe identical twins occur when a zygote splits into two cells and each becomes an individual organism!

@ItsEverythingElse 6 жыл бұрын

So how much time does this total process take from start to finish?

@ProfessorDaveExplains 6 жыл бұрын

i think about an hour! i mention it in the cell cycle clip.

@ItsEverythingElse 6 жыл бұрын

Figures, I need to watch these in order :)

@agyapongfrancis5515 Жыл бұрын

Agyap Jr

@Rulerrulesrules 10 ай бұрын

Anyone watching this before taking their DAT? :)

@pflegefachkraft7595 6 жыл бұрын

I love your lessons, but could you make them a tiny bit more school friendly (the beginning is somewhat awkward, but I somewhat want to show of how cool you are). Furthermore you upload more and more things I actually look up online. Thank you for spiing on me.

@ProfessorDaveExplains 6 жыл бұрын

happy to help! what do you mean by school friendly exactly?

@pflegefachkraft7595 6 жыл бұрын

Less funny more professional (You see I am currently studing in germany so something joyful like your beginning really doesn´t work in this strict country)(nothing personal thoe I love your childish opening). Thank you for your hard work and keep it up Professor Dave

@ProfessorDaveExplains 6 жыл бұрын

i think that anyone who gets past the six-second mark will see that my tutorials are nothing but professional, just tell your professors to chill out and judge the content based on its merits!

@pflegefachkraft7595 6 жыл бұрын

Might be right (I guess I still cut the first seconds out before showing any military general son (Our biologie professor)). Your contend is perfectly professional and taught me many things I didn´t know before.