Cell Cycle and Mitosis
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- เผยแพร่เมื่อ 22 พ.ค. 2024
- The cell cycle, or cell-division cycle, is the series of events that take place in a cell leading to duplication of its DNA (DNA replication) and division of cytoplasm and organelles to produce two daughter cells.
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DNA Replication : • DNA Replication Made Easy
In cells with a nucleus, as in eukaryotes, the cell cycle is also divided into two main stages: interphase and the mitotic (M) phase (including mitosis and cytokinesis. During interphase, the cell grows, accumulating nutrients needed for mitosis, and undergoes DNA replication preparing it for cell division. During the mitotic phase, the replicated chromosomes and cytoplasm separate into two new daughter cells. To ensure the proper division of the cell, there are control mechanisms known as cell cycle checkpoints.
The cell-division cycle is a vital process by which a single-celled fertilized egg develops into a mature organism, as well as the process by which hair, skin, blood cells, and some internal organs are renewed. After cell division, each of the daughter cells begin the interphase of a new cycle. Although the various stages of interphase are not usually morphologically distinguishable, each phase of the cell cycle has a distinct set of specialized biochemical processes that prepare the cell for initiation of cell division.
Sorry for the Mistake guys. Its "DNA REPLICATION" not "TRANSCRIPTION". 😁
Please make video in protoplast isolation, culture and fusion
ok thank you for the correction, you could add it as a popping message on the video if you want to help people who have not seen your comment.
I also have a question: in the S phase the DNA is replicated, and on your illustration you use chromosomes , but later on in the mitotic phase you explain that the genetic material within the cell goes from random string to chromosome-shape, which comfuses me: could you clarify at which point of the cell cycle the genetic material is shaped as a chromosome? thank you
also mention where. thank u
4:43
And also you mentioned that chromosome number double during S phase which is wrong
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really today i understood cell cycle and its divisions ur channel is best,loved it.
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I got understood cell cycle clearly and my doubts vanished Thank u so much for this awesome video YOU explained very clearly thank u thank so much
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4:30 The number of chromosomes does not double in S phase. The number of chromosomes remains the same (46 for humans), but each chromosome goes from having one chromatid (having a single DNA molecule) to having 2 sister chromatids (having 2 DNA molecules, with the old and new chromatid attached to each other).
Thank God for this ! I was looking for this
Thanks for the patience and support
Very easy explanation...Thanks.
If I would have found this channel earlier I would have scored 100% in Anatomy and Physiology 2. I couldn't understand Mitosis and meiosis but now I do. Thanks so much for this video. Now we need meiosis!
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Even I too wanted to know so
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Thanks May you please make a video on nutrition in plants
Hey man! where were you these many months..
Was busy with residency exam brother. Thanks for asking
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Excellent!
Good video
mas naintindihan ko pa to kesa sa teacher namin😀 thank you!
Sir.. If u can please make a video on how the regulations done by the Cyclins and CDK in the checkpoints of cell cycle.
@ protein synthesis occur in G2 phase where as many organelles get double in G1 phase .
*I guess the content of chromatin material gets double not the chromosomes i.e the number of chromosomes remain same
hello sir
, nice video of course .please help me understand haploid and diploid cells
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very good
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great work. thanks for this and also other videos. I have one question that if there are checkpoint before "S" phase and 'M" , for any damage in DNA , then what about that genetic problems ?? why they are ? are these checkpoint do not catch these DNA damage which leads to genetic diseases ?? kindly guide me regarding this. thank you MEDSimplified
Hey you are back broo
Thanks for the patience bro
After such a long time😊😊
Thanks for the patience 😁
6:54 Pro-metaphase is actually part of prophase. Some sources call it pro-metaphase and others call it late prophase, but it is the same events for either term. Both types of sources have for metaphase only the events related to the chromosomes lining up at the metaphase plate (which by the way is equatorial, not equitorial).
Tnx sir........nvr understood this b4 ....
Nice one
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love it thanks
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Sir , is there any checkpoint between the G2 and S phase ??
dear make one for meiosis too
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Pls make for Meosis also
please Dr i want link of video for meiosis lecture and i your explain really very nice
Sir , what is the definition of the cell cycle checkpoints...??
Please answer this...I 'm very confused about this..... Thank you ... ☺☺
Sir, pls make video on meiosis also
Hi! Where can I get the link for the worksheets? I upgraded to the highest level of member yesterday but it says "link will be added soon". Thanks! Amazing content.
You can find the links to dropbox on our members feed page on youtube
Please make a video on meiosis sir
Mind-blowing
Please make the video separately for mitosis. And also please do video for meiosis because lot of confusions on there. Plzzzzzz do the video
Video on MITOSIS coming in a week. And on meiosis too
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Please can someone let me know where i can find this video notes? Like a pdf?
There might be a slight error at 4: 35....in S phase, DNA is duplicated but no. Of chromosomes remains unchanged...you said no. Of chromosomes is doubled
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Was busy with my residency exam. Will upload now.
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Make vedio on meosis.... Plssss
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thank you for tolled about cell cycle
Sir in S phase only amount of DNA gets doubled number of chromosomes remain constant.isnt it
Hi medsimplified team can I have video on meiosis 🥺🙂
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Bro make another vedio for meosis
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@3.04 you mean to say karyokinesis is mitosis
plz make video on meiosis
Will do!
Ah! Long time no see
Ahhh. Was busy with the residency exam😁 thank u for the support 😊
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POV u have finals tomorrow
at 4:42 min the process is Replication and not Transcription
4:40 Duplication of chromosomes is not accomplished by transcription, but by DNA replication.
In S phase Replication no transcription
Sorry for the Mistake
Vah good attention
In s phase replication occurs not transcription
Yeah it should be replication...
En activation inhibit cell division
9:30 For G1, you show a duplicated chromosome, and then for S phase you show 2 duplicated chromosomes. But in G1 the chromosome would have only a single chromatid, and in S phase there would be only 1 chromosome, but now duplicated so having 2 chromatids.
In S phase chromosomes number remains same
Meiosis