This document discusses the cell cycle and cell division. It begins by defining cell division and the three main types: binary fission in prokaryotes, mitosis in eukaryotes for growth and repair, and meiosis in eukaryotes for formation of gametes. The stages of the cell cycle are then described, including interphase (G1, S, G2 phases) and the mitotic phase. The mitotic phase involves the four stages of mitosis (prophase, metaphase, anaphase, telophase) followed by cytokinesis. Key checkpoints in the cell cycle that regulate division are also mentioned.
cell division - Mitosis in plants final.pptReddykumarAv
mitosis is used for almost all of your body’s cell division needs. It adds new cells during development and replaces old and worn-out cells throughout your life. The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less.
cell division - Mitosis in plants final.pptReddykumarAv
mitosis is used for almost all of your body’s cell division needs. It adds new cells during development and replaces old and worn-out cells throughout your life. The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less.
The cell cycle, or cell-division cycle, is the series of events that take place in a cell leading to its division and duplication of its DNA to produce two daughter cells. In bacteria, which lack a cell nucleus, the cell cycle is divided into the B, C, and D periods
Cell cycle & Mitosis presentation to help understand the basic concepts related to the topic. This topic is included in the Maharashtra Board curriculum for XIth Std Biology paper. All videos inserted in this powerpoint have their respective copyrights. Unauthorized distribution and copying of the same is prohibited
The ability of organisms to produce more of their own kind is the one characteristic that best distinguishes living things from nonliving matter. This unique capacity to procreate, like all biological functions, has a cellular basis. The continuity of life is based on the reproduction of cells, or cell division. Cell division plays several important roles which are giving rise to a new organism, enabling development, renewing and repairing and also replacing damaged tissue is multicellular organisms.
توانایی موجودات زنده در تولید بیشتر از نوع خود یکی از ویژگیهایی است که موجودات زنده را از مواد غیر زنده به بهترین وجه متمایز می کند. این ظرفیت منحصر به فرد برای تولید مثل، مانند همه عملکردهای بیولوژیک، دارای پایه سلولی است. تداوم زندگی براساس تولید مثل سلولها یا تقسیم سلولی است. تقسیم سلولی چندین نقش مهم را ایفا میکند که نه تنها باعث ایجاد یک ارگانیسم جدید میشود، همچنین امکان رشد، تجدید و ترمیم و همچنین جایگزینی بافت آسیب دیده موجودات چند سلولی را نیز فراهم می کند.
cell division - Mitosis in plants final.pptReddykumarAv
mitosis is used for almost all of your body’s cell division needs. It adds new cells during development and replaces old and worn-out cells throughout your life. The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less.
cell division - Mitosis in plants final.pptReddykumarAv
mitosis is used for almost all of your body’s cell division needs. It adds new cells during development and replaces old and worn-out cells throughout your life. The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less.
The cell cycle, or cell-division cycle, is the series of events that take place in a cell leading to its division and duplication of its DNA to produce two daughter cells. In bacteria, which lack a cell nucleus, the cell cycle is divided into the B, C, and D periods
Cell cycle & Mitosis presentation to help understand the basic concepts related to the topic. This topic is included in the Maharashtra Board curriculum for XIth Std Biology paper. All videos inserted in this powerpoint have their respective copyrights. Unauthorized distribution and copying of the same is prohibited
The ability of organisms to produce more of their own kind is the one characteristic that best distinguishes living things from nonliving matter. This unique capacity to procreate, like all biological functions, has a cellular basis. The continuity of life is based on the reproduction of cells, or cell division. Cell division plays several important roles which are giving rise to a new organism, enabling development, renewing and repairing and also replacing damaged tissue is multicellular organisms.
توانایی موجودات زنده در تولید بیشتر از نوع خود یکی از ویژگیهایی است که موجودات زنده را از مواد غیر زنده به بهترین وجه متمایز می کند. این ظرفیت منحصر به فرد برای تولید مثل، مانند همه عملکردهای بیولوژیک، دارای پایه سلولی است. تداوم زندگی براساس تولید مثل سلولها یا تقسیم سلولی است. تقسیم سلولی چندین نقش مهم را ایفا میکند که نه تنها باعث ایجاد یک ارگانیسم جدید میشود، همچنین امکان رشد، تجدید و ترمیم و همچنین جایگزینی بافت آسیب دیده موجودات چند سلولی را نیز فراهم می کند.
Hello everyone! I am thrilled to present my latest portfolio on LinkedIn, marking the culmination of my architectural journey thus far. Over the span of five years, I've been fortunate to acquire a wealth of knowledge under the guidance of esteemed professors and industry mentors. From rigorous academic pursuits to practical engagements, each experience has contributed to my growth and refinement as an architecture student. This portfolio not only showcases my projects but also underscores my attention to detail and to innovative architecture as a profession.
Between Filth and Fortune- Urban Cattle Foraging Realities by Devi S Nair, An...Mansi Shah
This study examines cattle rearing in urban and rural settings, focusing on milk production and consumption. By exploring a case in Ahmedabad, it highlights the challenges and processes in dairy farming across different environments, emphasising the need for sustainable practices and the essential role of milk in daily consumption.
Book Formatting: Quality Control Checks for DesignersConfidence Ago
This presentation was made to help designers who work in publishing houses or format books for printing ensure quality.
Quality control is vital to every industry. This is why every department in a company need create a method they use in ensuring quality. This, perhaps, will not only improve the quality of products and bring errors to the barest minimum, but take it to a near perfect finish.
It is beyond a moot point that a good book will somewhat be judged by its cover, but the content of the book remains king. No matter how beautiful the cover, if the quality of writing or presentation is off, that will be a reason for readers not to come back to the book or recommend it.
So, this presentation points designers to some important things that may be missed by an editor that they could eventually discover and call the attention of the editor.
Can AI do good? at 'offtheCanvas' India HCI preludeAlan Dix
Invited talk at 'offtheCanvas' IndiaHCI prelude, 29th June 2024.
https://www.alandix.com/academic/talks/offtheCanvas-IndiaHCI2024/
The world is being changed fundamentally by AI and we are constantly faced with newspaper headlines about its harmful effects. However, there is also the potential to both ameliorate theses harms and use the new abilities of AI to transform society for the good. Can you make the difference?
You could be a professional graphic designer and still make mistakes. There is always the possibility of human error. On the other hand if you’re not a designer, the chances of making some common graphic design mistakes are even higher. Because you don’t know what you don’t know. That’s where this blog comes in. To make your job easier and help you create better designs, we have put together a list of common graphic design mistakes that you need to avoid.
1. THE CELL CYCLE AND CELL DIVISION
Presented by:
Fasama Hilton Kollie
Lecturer, Department of Biology
Mother Patern College of Health Sciences
2. CHAPTER OUTLINE
1. Cell Division
2. Importance of Cell Division
3. Prokaryotic and Eukaryotic Cell Division
4. Cell Cycle
5. Regulation of the Cell Cycle
3. LESSON OBJECTIVES
• By the end of this session, the learners will be able to;
1. Define cell division and cell cycle
2. Identify the purpose of cell division
3. Describe cell division in prokaryotic and Eukaryotic
cell
4. Describe the cell cycle
4. CELL DIVISION
• It’s the process by which a cell divides to form two new
cells
• Three types of cell division or cell reproduction in
organism
• Prokaryotes (bacteria)
— Binary fission
• Divides forming two new identical cells
5. Eukaryotes
— Mitosis
• Cell or organism growth
• Replacement or repair of damaged cells
— Meiosis
• formation of sex cells, or gametes
6. WHY DO CELLS DIVIDE?
• Cells divide for growth, development, repair of worn-out tissues
and reproduction
• To facilitate the exchange of materials
• To control DNA overloading
7. PROKARYOTIC CELL DIVISION
1. Binary Fission
• Three (3) major steps;
• DNA Replication
DNA is copied resulting into two identical chromosomes
• Chromosome Segregation
Chromosomes separate and move towards ends (poles) of cell
• Cytokinesis (Separation)
Cytoplasm divides forming two (2) cells
• Each new daughter cell is Genetically Identical to parent cell
9. EUKARYOTIC CELL DIVISION
• Cell division that results in two daughter cells each having the same
number and kind of chromosomes as the parent cell
1. MITOSIS
• Two (2) main steps:
1. Mitosis
Fours steps; [Prophase>Metaphase>Anaphase>Telophase]
2. Cytokinesis
Cytoplasm divides forming two new daughter cells
• Each daughter cell is Genetically Identical to parent cell
10.
11. Eukaryotic Cell Division Cont.
• Cell division that results in four daughter cells
2. MEIOSIS
• Two (2) major steps:
1. Mitosis
Fours steps; [Prophase>Metaphase>Anaphase>Telophase]
2. Cytokinesis
Cytoplasm divides forming two new daughter cells
• Each daughter cell is NOT Genetically Identical to parent cell
13. THE CELL CYCLE
• The sequence of events from the time a cell first arises as a result of cell division
until the time when that cell itself divides.
• Arise – Divide
• This consist of periods of;
•Growth and Development
•DNA Replication
•Preparation For Division
•Cell Division
• Cell after division begins a new cycle
14. The Cell Cycle
• Consist of two(2) main
periods;
I. Interphase
II. Mitotic Phase M phase
G2
phase
S
phase
G1 phase
15. CELL CYCLE - Interphase
• Interphase: period of growth and DNA
replication between cell divisions
• Three (3) phases:
• G1 Phase
‒ Cell increases in size
• S Phase
‒ Replication of DNA
‒ Two sister strands of DNA called chromatids
are produced
• G2 Phase
‒ Organelles double
‒ New cytoplasm forms
‒ All other structures needed for mitosis form
Centrioles
Nuclear membrane
Nucleolus
Chromosomes
18. CELL CYCLE – Mitotic Phase
• Mitotic phase is the stage when a cell divides
• Mitosis – the division of a single nucleus into two genetically
identical daughter nuclei
• This division involves two(2) processes;
‒ Division of the nucleus
‒ Separation of the cytoplasm and the new nuclei into daughter cells
19. Mitotic Phase
• Divided into two (2) mitotic phases
• 1st MP contain four stages (P-MAT)
– Prophase, metaphase, anaphase and telophase
• 2nd MP is cytokinesis
22. Early Prophase:
• Chromatids condense becoming
chromosomes
• Nucleolus disappears
• Centrioles separate and start moving
to opposite ends of the cell
• Spindle begins to form
Chromatids
connected by a
centromere.
Centrioles
Spindle made of
microtubules
23. Late Prophase:
• The nuclear membrane
fragments and the
microtubules invade the
nuclear area
• Centrioles have moved to the
opposite poles
• The spindle is completely
formed
centrioles
Microtubules
form a complete
spindle
chromatids
centrioles
24. Metaphase:
In metaphase;
• The chromosomes are aligned
at the metaphase plate
• Centrioles move at polar ends
and projects spindle fibers to
connect each chromosome
Centrioles
Chromosomes
Spindle
composed of
microtubules
25. Anaphase:
In anaphase;
• The paired chromosomes
(sister chromatids) separate
• Separated chromatids move
to opposite pole
• Partial division of cytoplasm
begins
Chromatids are
being pulled to
opposite sides of
the cell.
Shortening of the
microtubules
26. Telophase:
In telophase;
• Chromosomes are at the
poles
• Chromosomes uncoil-turn
chromatin
• Nuclear envelops reforms
• Spindle fiber disappear
Nuclear
membrane
is returning
27. Cells return to interphase
Cytokinesis:
• Occurs at the end of mitosis
• Animal cells: a cleavage furrow
separates the daughter cells
• Plant cell: a cell plate separates the
daughter cells
• Daughter cells are genetically
identical
32. CONTROL OF THE CELL CYCLE
• Regulatory proteins called cyclins control the cell cycle at
checkpoints:
• G1 Checkpoint—decides whether or not cell will divide
• S Checkpoint—determines if DNA has been properly replicated
• Mitotic Spindle Checkpoint—ensures chromosomes are aligned at
mitotic plate
33. REFERENCE
• Nabor, Murray W., INTRODUCTION TO BOTANY. Copyright 2004 Pearson
Education, Inc., Publilshing as Benjamin Cummings, 1301 Sansome St., San
Francisco, CA 94111.
www.aw-bc.com
• CK – 12
https://www.ck12.org/biology/cell-division/lesson/Cell-Division-BIO/
• Image Attributions
[Prokaryotic cell division]
Credit: Mariana Ruiz Villarreal (LadyofHats) for CK-12 Foundation
Source: CK-12 Foundation
License: CC BY-NC 3.0
