In this video, we look at the structure and function of centrioles, cilia and flagella. First we look at centrioles and their roles in eukaryotic cells including the assembly of spindle fibres during cell division. We then look at the role of centrioles in cilia and flagella.
This video is aimed at the UK A Level Biology specifications. Students studying International A Level Biology will need to check their specification.
Image credits:
Animal cells
https://commons.wikimedia.org/wiki/File:Eukayotic_Cell_(430x_maginification).jpg
https://upload.wikimedia.org/wikipedia/commons/c/cd/Eukayotic_Cell_%28430x_maginification%29.jpg
Chlamydomonas
https://commons.wikimedia.org/wiki/File:Chlamydomonas_globosa_-_400x_(13263097835).jpg
https://upload.wikimedia.org/wikipedia/commons/4/4e/Chlamydomonas_globosa_-_400x_%2813263097835%29.jpg
Mitotic spindle (image enlarged)
https://commons.wikimedia.org/wiki/File:Mitotic_MDCKs.jpg
Ian P Newton & Paul L Appleton, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
Cilia
https://commons.wikimedia.org/wiki/File:Bronchiolar_epithelium_3_-_SEM.jpg
https://upload.wikimedia.org/wikipedia/commons/3/39/Bronchiolar_epithelium_3_-_SEM.jpg
Sperm cell diagram
https://commons.wikimedia.org/wiki/File:201304_sperm.png
https://upload.wikimedia.org/wikipedia/commons/b/be/201304_sperm.png
Chlamydomonas flagellum
https://commons.wikimedia.org/wiki/File:Chlamydomonas_TEM_17.jpg
Dartmouth Electron Microscope Facility, Dartmouth College, Public domain, via Wikimedia Commons
Thanks Sir. I used your videos at GCSE and got a 9 in biology so hopefully you can get me through to getting an A* in A-levels now :D
@gabriellerwe Says:
thank u so much for the help with sciences in the past years 🫶🏾🫶🏾
@spectrum3460 Says:
Thank you so much for your GCSE videos, you've helped a lot of people myself included.
@N01Meow Says:
thank u very much sir i did my last gcse science exam they were all good thanks to you 👍 sad to not be able to watch u next year for physics but its ok thank you very much :)
@nobbsy8758 Says:
You were the angel that came and saved me in my darkest times. I knew nothing about chemistry before the GCSE's and you helped me actually grasp all the sciences when it came time to do the exams. Now that they are over I just wanna say I appreciate you and I am pretty confident that a lot of other people are man, so 🥂cheers to you, you marvelous man! :D
@worldguider Says:
Are you real sire? You dont even move!?
@lesleymarker5732 Says:
Sir. You’re the best
@ahmadqasim4773 Says:
Someone tell me why this man hasn't got a Nobel prize yet 🤔
@walterwhite1427 Says:
Even though this isn’t related to the video I’d like to thank you load for your chemistry videos for GSCE your videos help me and made the paper seem easy thanks you again I can’t thank you enough God bless you
@mohammedazam4393 Says:
Hello sir, thanks for doing these videos, been a real help.
@AliFanClubb Says:
hello sir, sorry you must get this question a lot but will you ever consider making videos on a level physics?
@dotpot8426 Says:
hi sir, will you do a level physics videos?
@digestivebiscuits5276 Says:
This guy deserves an MBE or an OBE or something
@DhirendraPatel-y3y Says:
hello
@DevSingh-zc6hu Says:
The GOAT
@LukeWilsonUK Says:
can i ask who composed your intro and outro? its iconic
@afrasulthana1281 Says:
SAY HI TO ME AS WELL.
@flame.3090 Says:
will you do a level physics one day?
@CrazyHorse-v1y Says:
When do u expect to finish all of alevel bio and Chem?
@dotpot8426 Says:
hello, will you end up doing physics a level videos for aqa?
@user-yb9of4tq1c Says:
SAY HI TO ME
@jacopo3728 Says:
Sir when are you going to start doing chemistry again?
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