Mitosis: How One Cell Becomes Two 

Thanks for the Tip 🙂

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​@@boxer8657992😅

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

@@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.

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.

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

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!

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

​@@ProfessorDaveExplains🎉

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

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.

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

SHIVAPRIYA THILAKAN

Yes they also replicate in interphase

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

They do the stanky walk and get tf up outta there

Aster is just centrosome with astral rays

hmm i think it is separase but double check

@@ProfessorDaveExplains thank you so much

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

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.

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.

over about a billion years and through many intermediate stages!

Yeah bud.

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.

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

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?

about 1 hour

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

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

Figures, I need to watch these in order :)

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

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

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!

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.

Profesor dave explain endocrinology and hormones and exocrinology and enzymes

california!

Professor Dave thanks alot!

How many hours do you study in 1day? Please tell 🙏

i don't study! but i work on this content 10-14 hours a day.