Chapter 5: The Mitotic Cell Cycle

How do we grow from babies to adults? Why do our skin cells grow back after a bruising? How are we able to produce different organs as we grow from zygotes to embryos to fully-formed babies? The answer lies in mitosis! In this video, I explain the different stages of mitosis, the role of mitosis/mitotic cell cycle in living organisms and the importance of stem cells. As required by the Cambridge A level Biology syllabus, I also touch on cancer cells and how they are formed as a result of uncontrolled mitosis! Don't forget to pop any questions you have in the comments or share any interesting facts related to the topic!

[@EAft-mf1gn]

Thank you so much you’re a life saver!!! And also doing this for free… I’m so grateful! You’re a GEM

[@SaifUllah-gk9xm]

OMG! You just covered the whole chapter in 18 mints. Thank you so much. You are the best

[@dkrose386]

Thank you so much Dr for making this videos. Especially during this pandemic and online classes is hard sometimes. Im taking AS biology exams this year thank you for these videos😍❤️❤️

[@biowithdrdemi]

I wish you good luck in the AS exam! Make sure to practice your paper 3 principles, learn how to do the dilutions and remember the principles of enzymes and food tests. Also important for paper 3 is microscopy and how to draw the cells

[@shameelafaisalzia3117]

@@biowithdrdemi Can u please tell me important topics for AS Biology Paper 2

[@YourFadaa]

The best teacher😭👐🙏🏽🙏🏽

[@jarix862]

More power to you! You really helped the kids get out of depression

[@alexaghigea6501]

Thank you so much for this! I was reading the book and couldn't understand a thing. You did a great, EXCELLENT job explaining this topic. Thank you so so so much. Keep it up

[@angelouspalukumugisha991]

Thanks alot for such a brief summary,alot is being learnt

[@NAGGA221]

hi demi, I'm confused about the difference between chromosome,chromotid,chromotin. maybe chromosome is consisted of two chromatids ,chromatids and chromosomes are two tight forms while chromatin is in loose form？

[@providentialliving122]

Outstanding presentation. Thank you

[@stylebyhuda8211]

Amazing explanation thank you so much. Never understood any of this before but now I can remember it so well 👍👍

[@clownshit8705]

This was very helpful. Thank you!
p.s i hate reading this chapter because i personally found it boring but thanks to you, it has become interesting!

[@joshandersons6914]

Thank you so much Dr. Demi for these videos, These videos will benefit my kids tremendously as they learn biology for their high school/college

[@gul3422]

Aaaa perfect 👏👏👏👍👍👍

[@yunussicakozul2223]

hello dr demi. first of all thank you for your amazing content. secondly, i have a question. approximatively how hard is to get an E or a D for as level biology,because i have as and a level session is march and i am stressful as hell.

[@dae09]

do these videos work for the aqa specification?

[@dilshanbandara754]

Thank you so much Dr. This videos are so helpful

[@ladyyyClare]

THANK YOU SO MUCH!!!!!!!!!!!!!!!

[@jamieliona3304]

thank you so much maam

[@mariusalred13]

Thank you Demi

[@imshawqy]

thank you so much

[@leenelhakim6002]

Does this cover everything that is included in the syllabus?
Thank you, this was extremely useful!!

[@biowithdrdemi]

HI Leen, yes it does

[@aliiiiiiiiii19]

hey doctor, isn't it supposed to be the enzyme telomerase and not "polymerase", I'm confused. refer to 12:51 in the video. Or: is the telomerase that adds bases and the polymerase enzyme copies it? could you clarify pls?

[@manahilkashif6480]

Basically, polymerase is the copying enzyme and and telomerase adds bases to the telomeres

[@dkrose386]

Dr, i have a question usually in exams, how is stem cells question being asked? Do we need to mention totipotent and multipotent and explain how they works? Thank you dr🌈😍

[@biowithdrdemi]

Yes, certainly you have to know the difference between the different types. The questions I have seen are mostly in the multiple choice paper, and sometimes as a 3 or 4 mark question in paper 2.

[@chshaheerahmedbhatti4746]

Good work miss thanks you so much

[@biowithdrdemi]

You are welcome! Thank you for watching.

[@VeronicaJosef-ls2dx]

Dr demi I am very excited and interested in your videos because you make me understand , but may please come up with some questions on this chapter

[@biowithdrdemi]

Hi Veronica, in the playlist solutions to past papers, you'll find some videos on papers 1 and 2, some of which cover chapter 5.

[@ahealingbonfire]

Thank you so much UwU!!! 👉👈

[@angadhundal5556]

Is it okay if we just read your notes instead of reading whole chapter of is it just the outline of the chapter

[@biowithdrdemi]

Hi Angad, my notes are comprehensive and contain most of the information you need. However, I suggest trying past questions to identify any gaps that you can then fill up by checking the textbook

[@mahnoorshazad2854]

do we need to learn the stages of development of cancer? kindly replyy

[@biowithdrdemi]

Please have a look at the syllabus to confirm

[@user-mq3mv8ek3m]

In wich phase do chromosome first become visible

[@biowithdrdemi]

Prophase