Thank you so much for explaining this. I spent almost all day trying to figure out the roles of the centrosomes, microtubules, and centromeres were!! It's hard to visualize what books are trying to describe. I am more of a visual learner, so this helped so much!!!
He repeats everything quite frequently in order to emphasize the steps. But sometimes, like in the case that Kyle pointed out, he is just stuttering lol
Amazing video thank you :) If anyone is in the UK studying A-Level Biology you also need to know that animal cells cleve from the outside in, and plant cells cleve from the inside out, laying down platelets of cellulose. It was a question that came up on a paper a few years ago and caught people by supprise!
Taking a science test tommrow and this really helped me as well as all the other videos khan academy has to offer? I use their videos mostly for my algebra 1. You guys are the best keep it up. (Inspiring nerds like me everywhere)😂
Just a tip to differentiate between centromere and centrosome centroMere - middle (MIDDLE of sister chromatids & cell) centroSome- Side (sides of sister chromatids & cell). I hope this helps.
when people they put out this long presentations with so much info in them, they are hard to follow. they are all so worried about sounding academical and the message gets lost. but not with you. you are awesome.
These videos make complex concepts so much easier to understand. Thank you so, so much! I can't believe how much I enjoy watching them. I choose them over my lectures any day! This is HEAVEN to the visual learner, which is the best way I learn!
Thanks for explaining mitosis. If you don't mind, I would like to ask a few questions for clarification: 1) Two sister chromatids, are they exactly identical, or are they "complement" of each other, A being paired with T, C with G? If sister chromatids are exactly identical, what bond makes them stay together? 2) I watched both Mitosis and Meiosis video. Where does the concept of "double helix" comes into play?
Thank you so much for these helpful videos! I'm a visual learner and I couldn't get through college without UA-cam! Only thing, with this video, you didn't mention the Prometaphase stage, which I need to know for class...there are 5 stages to mitosis, not four. Still a helpful video.
2:53 What is Newton's First Law? Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia. The key point here is that if there is no net force acting on an object (if all the external forces cancel each other out) then the object will maintain a constant velocity. If that velocity is zero, then the object remains at rest. If an external force is applied, the velocity will change because of the force. So what external force acts upon the cell to do Cytokinesis do you know what kinesis means in Greek? It means MOTION "Scientists are still trying to explain HOW this process works" Here is the twist, they do know, they just won't accept the truth keep in mind, no cell has a brain by its self so how can everything in that cell move without an intelligence behind that? they can't not without help from the creator, God himself hear me out, how many parts of the DNA sequence are there? FOUR how many rectangles extend outward from the cross that Jesus died on? FOUR just saying
This is sooooo crazy wow god created us perfectly subhana Allah 🤌🏻🤌🏻and thank you , you explained this lesson briefly, in an perfect and enjoyable way 🤍
I just have one small doubt... what happens to all the organelles in the cell when mitosis happens? Do they disintegrate along with the nuclear membrane? However, your videos are extremely well depicted and a great way to study! Hope you keep up your good work!
I think there should be another name for a "chromosome" when it is replicated into two sister chromatids (duosome?). This new entity is essentially two chromosomes lassoed together and yet we still refer to it as "a chromosome", which can be confusing for students when describing mitosis/meiosis.
this is the best video ever, very informative and FUN. saved my life in ap bio and now i love the color magenta. 10/10 would watch again and again. what a good time best teacher EVER!!!!
just wow. Thank you very much . you explained v well. even you emphasized those things every time where we can confuse like centromere centosome etc . Literally i can say that with the 16 years education i always confused about chromosome form now you cleared the concept about chromatid that this is also called one copy of chromasome . Thank you very much. sometimes we confuse even with very little things but you also clear little things. This is my first time when i heared your lecture and became your fan
8:50 Whoever said there was ANYTHING "basic" or "simple" about cell division/cell cycle was either really cocky or had no idea what they were talking about.
Hi. I did indeed enjoy the video, but it left me with a couple of questions: 1) when a cell replicates, does the old cell die? or at what point does a cell die? I imagine cells can't keep replicating or we would eventually get very big and blow up. Thanks, Stan
Prophase Sister chromatids (DNA) go from being in their spread-out chromatin form, to a more condensed form that can be seen from a light microscope, connected at the centromere. Nuclear membrane/envelope starts to go away. Centrosomes migrate to opposite sides of the cell. Mitotic spindle begins to develop Metaphase Nuclear membrane is now gone Chromosomes start to line up in the middle of the cell Centrosomes are at opposite ends of the cell Microtubules extend from centrosomes to the other centrosomes and centromeres. This helps steady the tension of the cell, making sure everything stays in the right place. The mitotic spindle is now fully formed and three groups of spindle microtubules should be present. Next anaphase DNA separates and migrates to either side of the cell. Microtubules from the centrosome begin to pull on the sister chromatids, separating them into independent chromosomes. The point at which the spindle fibres attach to the sister chromatid is known as the kinetochore. Cellular membrane begins to pinch inward at the centre point, preparing for the cell to split into 2 (cytokenises). Telophase Nuclear membranes form around the DNA. DNA goes back to its chromatid form. Cytokinesis occurs
I love when you hear him nerding out getting all excited explaining why something is important.
Same bro i like the way he talk
Exactly
what I learned from this video:
chromosomes are not magenta colored
centrosomes are not to be confused with centromeres
You should have a podcast ! Thank you so much . You have no idea how many students around the world that are blessed because of you .
These videos are SO incredibly helpful! Short, to the point, and very well explained. Thank you! :)
nice one
Becca p
true!
Thank you so much for explaining this. I spent almost all day trying to figure out the roles of the centrosomes, microtubules, and centromeres were!! It's hard to visualize what books are trying to describe. I am more of a visual learner, so this helped so much!!!
Same 😭
7:05 lol Sal says "what's going to happen next" 4 times
The suspense
Lol
He repeats everything quite frequently in order to emphasize the steps. But sometimes, like in the case that Kyle pointed out, he is just stuttering lol
Kyle Tomlinson d
REMIX!!!
Amazing video thank you :)
If anyone is in the UK studying A-Level Biology you also need to know that animal cells cleve from the outside in, and plant cells cleve from the inside out, laying down platelets of cellulose. It was a question that came up on a paper a few years ago and caught people by supprise!
Taking a science test tommrow and this really helped me as well as all the other videos khan academy has to offer? I use their videos mostly for my algebra 1. You guys are the best keep it up. (Inspiring nerds like me everywhere)😂
I'm making it magenta... bc it looks nice... Indeed, it does look nice, indeed
Just a tip to differentiate between centromere and centrosome
centroMere - middle (MIDDLE of sister chromatids & cell)
centroSome- Side (sides of sister chromatids & cell).
I hope this helps.
This helped me so much . Thank you so much . I finally understand .
Sal loves magenta!
but does magenta love Sal
سبحانك اللهم وبحمدك نشهد ان لا اله الا انت نستغفرك ونتوب اليك
when people they put out this long presentations with so much info in them, they are hard to follow. they are all so worried about sounding academical and the message gets lost. but not with you. you are awesome.
the swallowing makes me want to scream... HOWEVER your videos have helped me ALOT - Thanks a Bunch!
I Picked Me A Tasty Cookie
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
These videos make complex concepts so much easier to understand. Thank you so, so much! I can't believe how much I enjoy watching them. I choose them over my lectures any day! This is HEAVEN to the visual learner, which is the best way I learn!
Thanks for explaining mitosis. If you don't mind, I would like to ask a few questions for clarification:
1) Two sister chromatids, are they exactly identical, or are they "complement" of each other, A being paired with T, C with G? If sister chromatids are exactly identical, what bond makes them stay together?
2) I watched both Mitosis and Meiosis video. Where does the concept of "double helix" comes into play?
Much more helpful than just reading the slides my prof provided. Thank you!!
Thank you so much for these helpful videos! I'm a visual learner and I couldn't get through college without UA-cam! Only thing, with this video, you didn't mention the Prometaphase stage, which I need to know for class...there are 5 stages to mitosis, not four. Still a helpful video.
Really depends on the teacher
this guy knows how to explain stuff, i have never understood this. Now after just one video I get it
i thank god your channel exists
2:53
What is Newton's First Law?
Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia. The key point here is that if there is no net force acting on an object (if all the external forces cancel each other out) then the object will maintain a constant velocity. If that velocity is zero, then the object remains at rest. If an external force is applied, the velocity will change because of the force.
So what external force acts upon the cell to do Cytokinesis
do you know what kinesis means in Greek?
It means MOTION
"Scientists are still trying to explain HOW this process works"
Here is the twist, they do know, they just won't accept the truth
keep in mind, no cell has a brain by its self
so how can everything in that cell move without an intelligence behind that?
they can't
not without help from the creator, God himself
hear me out, how many parts of the DNA sequence are there?
FOUR
how many rectangles extend outward from the cross that Jesus died on?
FOUR
just saying
This is sooooo crazy wow god created us perfectly subhana Allah 🤌🏻🤌🏻and thank you , you explained this lesson briefly, in an perfect and enjoyable way 🤍
These videos are the reason i am not failing my classes
Thank you so much! I have a test in cell biology this week and these videos are so helpful!
You just saved my life. Thank you
Thank you keep up the awesome work. I feel so much more ready for my big test coming up having watched your videos.
THANK YOU SO MUCH! I have a test tomorrow and this is a really good study technique.
truly an artist..
I just have one small doubt... what happens to all the organelles in the cell when mitosis happens? Do they disintegrate along with the nuclear membrane?
However, your videos are extremely well depicted and a great way to study! Hope you keep up your good work!
They also grow and synthesize like mitochondria in G1 and G2 phases
The best vid for mitosis explained! I really thanks of your vid.
I think there should be another name for a "chromosome" when it is replicated into two sister chromatids (duosome?). This new entity is essentially two chromosomes lassoed together and yet we still refer to it as "a chromosome", which can be confusing for students when describing mitosis/meiosis.
this is the best video ever, very informative and FUN. saved my life in ap bio and now i love the color magenta. 10/10 would watch again and again. what a good time best teacher EVER!!!!
This helps so much! Thanks! Cheers
Omg thank you for making these videos! I have a test on mitosis and meiosis tomorrow and it was super confusing but i totally get it now!
Thank you very much for the video, I struggled to comprehend mitosis from textbooks and lessons but this was very well presented
Thank you so much. Our school has to take standard tests to graduate and this helps so much. Now, off to Meiosis!
Omg this video helped cleared up all of the confusion I had, thank you!
Besr lecture I have ever seen on mitosis(from Bsngladesh 🇧🇩)
Best Explanation Ever!
Make it so easy to understand..thnks
THANK YOU FOR YOUR EXISTENCE
This video was well explained, and I never got bored. Thank you!
just wow. Thank you very much . you explained v well. even you emphasized those things every time where we can confuse like centromere centosome etc . Literally i can say that with the 16 years education i always confused about chromosome form now you cleared the concept about chromatid that this is also called one copy of chromasome . Thank you very much. sometimes we confuse even with very little things but you also clear little things. This is my first time when i heared your lecture and became your fan
A very helpful video wellexplained in a very short time
Thank you #mitosis made easy
That was very helpful. These videos are very well explained. Thank you😊
Taught me more than my biology teacher did
same🤣🤣
Thank you for saving my life ❤
he makes everything so simple and basicccc good job
Brilliant explanation sir!!
Thankyou Sal!!! you explain things so well for me.
You're the best teacher!!
Thanks helped understand my lesson in more detail with clear view 👍👍
Oh wonderful teaching
Incredibly helpful👌👍
Amazing effort...
This is video is great , thank you.
Question: Why does DNA have to be compacted?
THERE ARE NO WORDS TO APPRECIATE YOUR WORK......👍👍👍👍👍👍✅✅✅✅✅
Thank you! The way you explain things makes it really easy to understand:)
Your explanation is just amazing ♥️🙏
tnx man
I LOVE Khan Academy.
Thank you so much for going into all the details and explaining it! I really appreciate how much work you put into these videos!
Awesome, thank u 💞
great drawings and explanation, also very cool handwriting! thanks for the help.
Very good! Continue... Good Luck!
superb video.....gud for bio students
Using this for addition biology notes... I have GCSE exams soon 😊
This is extremely useful for me
thank you so much sal! this really helped me!
very nice video 👌👌
"You'll see this in the cell - it's unlikely to me magenta!"
Awesome, thanks!! 👏🏻
There is a God.... :0
proof through science :)
Logan Smith how is that obvious??
Yeah right. It's Logical
It is Khan Academy 😊
8:50
Whoever said there was ANYTHING "basic" or "simple" about cell division/cell cycle was either really cocky or had no idea what they were talking about.
Thank you, this was very useful to me.
I finally understand thank you!
Thank you so much these videos are amazing!
Wow everyone that’s good in biology is a genius, in my opinion 😂 I envy this guy 😂
dude you're amazing i love this!
Nice explained
Thank you very much sir! love your lectures. I'm so grateful for these videos. These help me v.v.much
My lord and savior...Sal
0:16 "My-toe-sis" lol
ossom!
Thankyou!💙
question . for cytokinesis, except for the centrosomes, do other organelles replicate?
NO
Hi. I did indeed enjoy the video, but it left me with a couple of questions: 1) when a cell replicates, does the old cell die? or at what point does a cell die? I imagine cells can't keep replicating or we would eventually get very big and blow up. Thanks, Stan
Stanley Ross mitosis produces 2 'daughter cells' from one cell. so after mitosis, there is no "old cell".
Stanley Ross No cell dies.
Azad Kaya cells do die, but not during mitosis. Thanks for adding that.
KrashrSabba3 Yes of course not during the mitosis my bad :)
Prophase
Sister chromatids (DNA) go from being in their spread-out chromatin form, to a more condensed form that can be seen from a light microscope, connected at the centromere. Nuclear membrane/envelope starts to go away. Centrosomes migrate to opposite sides of the cell. Mitotic spindle begins to develop
Metaphase
Nuclear membrane is now gone Chromosomes start to line up in the middle of the cell Centrosomes are at opposite ends of the cell Microtubules extend from centrosomes to the other centrosomes and centromeres. This helps steady the tension of the cell, making sure everything stays in the right place. The mitotic spindle is now fully formed and three groups of spindle microtubules should be present.
Next anaphase
DNA separates and migrates to either side of the cell. Microtubules from the centrosome begin to pull on the sister chromatids, separating them into independent chromosomes. The point at which the spindle fibres attach to the sister chromatid is known as the kinetochore. Cellular membrane begins to pinch inward at the centre point, preparing for the cell to split into 2 (cytokenises).
Telophase
Nuclear membranes form around the DNA. DNA goes back to its chromatid form. Cytokinesis occurs
Thanks a lot dearr❤
Fantastic!
Thank You
amazing videos
life savor
Thanks!
Awesome video
I love when he says magenta !
Thanks a mill
This is amazing! Thank you Doc Sal:')