The Cell Cycle
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- Опубліковано 16 тра 2024
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SCIENCE ANIMATION TRANSCRIPT: In this lesson, we'll be looking at the cell cycle. This is the lifespan of a eukaryotic somatic cell. A somatic cell is any cell in the body of an organism, except for sex cells such as sperm and egg cells. The cell cycle describes the sequence of cell growth and division. A cell spends most of its life a state called interphase. Interphase has three phases, the G1, S, and G2 phases. Interphase is followed by cell division, which has one phase, the M phase. Together these four phases make up the entire cell cycle. G1 of interphase is sometimes called growth 1 or gap phase 1. In G1, a cell is busy growing and carrying out whatever function it's supposed to do. Note that some cells, such as muscle and nerve cells, exit the cell cycle after G1 because they do not divide again. A cell enters the S phase after it grows to the point where it's no longer able to function well and needs to divide. The S stands for synthesis, which means to make, because a copy of DNA is being made during this phase. Once DNA replication is complete, the cell enters the shortest and the last part of interphase called G2, also known as growth 2 or gap phase 2. Right now, it's enough to know that further preparations for cell division take place in the G2 phase. Now that interphase is over, the cell is ready for cell division, which happens in the M phase. The M phase has two events. The main one is mitosis, which is division of the cell's nucleus, followed by cytokinesis, a division of the cytoplasm. So, at the end of M phase, you have two daughter cells identical to each other and identical to the original cell. Let's review. The cell cycle describes the life cycle of an individual cell. It has four phases, three in interphase and one for cell division. Most cell growth and function happen during G1. The cell enters the S phase when it needs to divide. In this phase the cell replicates its DNA. Replication just means the cell makes a copy of its DNA. In G2, the cell undergoes further preparations for cell division. Finally, we have cell division in the M phase. The M phase consists of mitosis, which is nuclear division, and cytokinesis, or division of the cytoplasm. We'll explore the details of mitosis and cytokinesis separately. [music]
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This helped me alot in studying cell division as ztopic of cell division in our biology book
Thank you so much
Very well explained and understandable! 👍
Gonna need this for my Biology exam tomorrow
Loved the animation.
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Upload more videos related to biology topics... It's very helpful .. Thanks for sharing n teaching in such a interesting way
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Thank you sir, I learned a lot!!
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Very nice explanation ❤
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Thank you for uploading this video...!
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Hey thank you so much this helped alot! 💗
It's very beautiful video 💛
Thanks too much.. keep going 💛
This was a nice “big picture” overview of the cell cycle.
Honestly your content and explanation is just amazing! Got everything on tips in the easiest way....
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100% quality explanation...
These are very useful way to learn thanks
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I never understand the cell cycle of my school and tuesion teacher
But you are teaching great sir 👏👏👏❤️❤️
Very useful and helpful video. Fast and reliable thanks.
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When u know yet thing u know it 😮😮 thanks sooo much this video was totally helpful❤❤
It's like watching a movie but it clears concepts & easy to remember
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Very good
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Thank you
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Grt explanation
My best teacher bring out more vedio on anatomy please
Nice video.awesome and supper. But apload full lesson
I cant believe that i understood this lesson within 4 mins using this video. I hated this part for the last couple of years, caz no matter how i studied it,i just couldnt understand it, thankyou so much
😭thnku so much i was confuse between g1 phase and s phase of chromosomes but not now thnku again😭😭
thanks sir😗👍
Thanku so much ☺️
But please try to make video in Hindi also 🙏🙏
My request please apload photosynthesis in plants soon. Because I have biology weekly test on Monday plz . It Will help full for me. Plz I want full lesson. Help to get good mark
Hello classmates 🎉👋
High kian
Hi kian
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Hi ❤
yes
this will make us people good cell scientests
Wrong animation in G1phase and s -phase and G2 phase dna is not found in condensed form it is present in nucleus in form of chromatin first time dna condensation start in Prophase of M-phase
True
yes correct and it bothers me that they showed S phase longer than G1, whereas G1 is the longest phase
Do upload various videos
I am in 11 class i am doing this chapter from your channel
Tq
2n=3?
should have used a diploid cell to illustrate
Супер!
Like it
The nucleus is visible when cell is:
Dividing
Not dividing
Resting
All these
nucleus is visible at any time while viewing a cell but if you say chromosomes then it is the metaphase
100%
G0?
Please explain with urdu
hi guys👋 i have an exam tomorrow, im about to give up
complete video of meiosis
Can we say that the cell becomes 4n in S phase?
there is no increase in chromosome number or the entire genotype would change but the amount of DNA per cell doubles so if the initial DNA were, say, 2C, after S phase, it becomes 4C, but the chromosome number stays the same, say, n for haploid cells or 2n for diploid cells
Great visual - Question: Aren't all somatic cells an even number - 1/2 from the egg and 1/2 from the sperm? Shouldn't there always be an even number of chromosomes for a Cell Cycle?
Yes, typically, but it is important to note that exceptions can occur due to genetic abnormalities.
I love medicine 💉💊🤍
so i’m doing grade 9 science and i got told that it was once grade 12 then they moved it down to grade 9…wish me luck☹️
They have it at grade 8 science here
Hello
In s phase does chromosomes duplicate?
No.
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😊...Sir, G1 phase is the longest phase of cell cycle..... Am i right...?🙄
yes
nope it took 9 hours where as S phase took 10 so S is the longest phase
@@ismilkhan9659 G1 is the longest phase, if we're talking about humans, then G1 takes 11 hours, S takes 8, G2 takes 4 and M takes 1 hour
No.. Interphase is longest phase which include G1, S & G2.
@@user-dt2dk8mn7r yes and within interphase, G1 is the longest
When does the cell death happen, this video is incomplete
Man cell cycle is in too brief
I was forced to watch this in school:(
Can everyone tell in which class you are studying this 😊😊
Please give g note vidio...
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nice video i was able to find my girlfriend's g point
I agree I liked it very much
Convert to Hindi please
It wrong 😢😢you
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I want to keep the best scientist alive in all cost
Please remove this video from UA-cam 😢
Why
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Please remove this video from UA-cam 😢