Cell Theory 

Omg If Alex Lee was my teacher I swear I'd get a level 7 xD Thank you so much Alex!

4 days till IB, starts watching Alex Lee....Letz do dis!

I have a test tomorrow (Swedish IB) and this series helps so much! Thanks for taking the time to do this!

Alex Lee, can't you see. He's the greatest teacher that you will never be. (definitely not aiming this to my teacher)

Thank you so much for all your videos! You helped me a lot! Actually you still do. Have a good day:)

you are literally jesus thankyou 4 saving my life

loving your videos

thank you so much for your videos!

i have a bio test tomorrow just started

ur so cool man luv ur vids

thank you so much for this bro, you help me keep my grades excellent! :)

great video!

also Linh Khanh Ha loves them

Thank you Passed because of your videos :D

keep it up

you are great thank you! however Im not sure I understood why the skeletal muscle the fungi the ameba and the red blood cell are evidences?

thank you so much God bless you!!!

oh you are great

I love you thank you so much

thank You so much

is this relevant to the 2017 syllabus?

I love you

awesome video, helped so much

hello

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