Get started

Biology65Updated Sep 5, 20264 pages

Understanding Mitosis: Stages and Cell Division

Report
user profile picture
Kaity@kayunity
Add to Google sources
Mitosis is the process where a cell's nucleus divides to create two identical daughter cells. This fundamental process occurs in all eukaryotic cells except reproductive cells and is essential for growth, repair, and asexual reproduction in living organisms.
Mitosis – page 1

Sign up to see the content.
It's free!

Mitosis and Chromosomes

Ever wondered how your body creates new cells? Mitosis is the answer! This is when a cell's nucleus divides through four phases: Prophase, Metaphase, Anaphase, and Telophase. Mitosis happens in all eukaryotic cells except reproductive cells.

Chromosomes are condensed strands of DNA that contain your genetic information. They form an X-shape when a cell prepares to divide, with each arm called a chromatid. You get one chromatid from your mum and one from your dad, held together by a centromere.

Before mitosis even begins, cells prepare during a stage called interphase. The synthesis phase of interphase is when the cell makes a copy of all its DNA, getting ready for division.

Quick Fact: Asexual reproduction produces offspring that are exact genetic copies of the parent. This happens through processes like budding, spores, regeneration, and fission.

Mitosis – page 2

Sign up to see the content.
It's free!

The Cell Cycle

The cell cycle is like a cellular roadmap showing how cells grow and divide. It starts with interphase, which includes three stages: Gap 1 (G₁) where the cell grows, Synthesis (S) where DNA doubles, and Gap 2 (G₂) where the cell grows more.

Human cells normally have 46 chromosomes, but after DNA replication in the synthesis phase, they temporarily have 96 chromosomes! This prepares them for division into two complete daughter cells.

Once fully grown in G₂, the cell enters the mitotic phase (M-phase). This is when the actual division occurs, creating two identical daughter cells. Some cells can also enter a resting phase called G₀ where they leave the cycle temporarily.

Remember This: Mitosis creates two identical daughter cells, each with exactly the same genetic material as the parent cell. This is crucial for growth and repair in your body!

Mitosis – page 3

Sign up to see the content.
It's free!

The Four Phases of Mitosis

Prophase kicks off mitosis with some big changes! The nuclear membrane starts dissolving, centrioles begin forming spindles, and chromatin tightens into visible chromosomes. Think of it as the "preparation phase" where the cell gets ready for division.

In Metaphase, chromosomes line up neatly along the middle of the cell (called the metaphase plate). Centrioles move to opposite ends of the cell and send out spindle fibers that attach to the chromosomes. This perfect alignment ensures each new cell will get the right chromosomes.

During Anaphase, things get moving! The chromosomes split at their centromeres, and sister chromatids are pulled toward opposite ends of the cell. This separation ensures each new cell will receive a complete set of genetic material.

Visualize This: In Telophase, think of the cell doing everything from Prophase but in reverse - nuclear membranes reform and the cell prepares to physically split in two!

Mitosis – page 4

Sign up to see the content.
It's free!

Cytokinesis and Interphase

After mitosis comes cytokinesis, the final step where one cell physically splits into two. In animal cells, the cell membrane pinches inward at the cleavage furrow until two separate cells form. It's like tying a drawstring bag in the middle until it becomes two bags!

Plant cells do cytokinesis differently. Instead of pinching, they form a cell plate in the middle - essentially building a new wall between the two forming cells. This difference exists because plant cells have rigid cell walls.

When cells aren't actively dividing, they enter interphase - a resting phase between divisions. But don't be fooled by the name! Interphase is actually when cells do most of their growing and DNA replication to prepare for the next division.

Cool Connection: Everything you learn about the cell cycle helps explain how your body grows from a single cell to trillions of cells, and how it can repair itself when you get a cut or scrape!

We thought you’d never ask...

Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.

You can download the app in the Google Play Store and in the Apple App Store.

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Similar Content

Biology

Meiosis review worksheet

biology meiosis review

1537
Chemistry

Mitosis

Learn about Mitosis and the four distinct phases of the eukaryotic cell cycle and their functions in cell growth and division.

9th33957
AP Biology

Notes on Mitosis laboratory for AP Bio

Notes on Mitosis Lab for AP Biology. Includes colored diagrams, explanations, microscope pictures, and tables.

1244
Biología

La célula, mitosis y meiosis.

-Estructura celular. -Células eucariota y procariota. -Interfase, meiosis y mitosis.

4° ESO532
Biology

Mitosis

Mitosis notes for exam

10th942
Biology

Sexual & Asexual Reproduction

Covers: Meiosis, mitosis, G1, S, G2, M, chromosome structure

9th512
See more

Most popular content: Mitosis

Biology

Mitosis & Meiosis

This Note sheet covers PMAT, Mitosis, Meiosis, Haploid, And Diploid.

56
Biology

Meiosis review worksheet

biology meiosis review

1537

Most popular content: AP Biology

AP Biology

Photosynthesis

Photosynthesis-Importance, Formula, Plant Cell.

1,87258
Biology

Ch 1 - The Human Body; The Orientation

Human Anatomy Introduction: Chapter 1

11th532
Chemistry

Carbon Chem - Organic VS Inorganic, Hydrocarbons, Molecular/Structural/Empirical Formula, Functionnal Groups

Review Organic VS Inorganic compounds, learn about Hydrocarbons, Understanding the differences between molecular, structure, and empirical formulas, Prefixes/Suffixes, Functional Groups of carbon.

9th1317
Biology

Asexual and Sexual Reproduction

Notes describing the effects of asexual and sexual reproduction in biology and organisms

3557
Biology

Cell Division

Four stages of the cell cycle, cell division in prokaryotes and eukaryotes are the topics discussed here.

149
Biology

Applying Newtons 3rd Law of Motion

Applying Newtons 3rd Law of Motion

8th1117
AP Biology

Body Systems Notes for AP Bio

Notes of the Human Organ Systems with diagrams, functions, main organs, and explanations. Includes 10 human organ systems

52921
Biology

The Microscope

Describing the Parts of Microscope with Functions

1,23619
Biology

Friction

Types of Friction

6th35

Most popular content

Algebra

FAR NOTES- CPM

Compiled by CPM

College2,13947
Fun Stuff

DMV Practice Test 1

First set of Questions from DMV Handbook

1,413131
AP Physics 1

Newton's Second Law of Motion

A detailed explanation of Concept of Newton's Second Law of Motion, Examples, Formulas, and Sample Problems with solution.

44414
Algebra

FAR NOTES - KUYA WOWOWIE

Far notes by Kuya Wowowie

College97218
Algebra

FAR NOTES-HERCULES

LAST MINUTE NOTES BY HERCULES CPA

College1,21018
Algebra

RFBT NOTES- HERCULES

LAST MINUTE NOTES BY HERCULES CPA

College92716
Physics

Translational Motion and Rotational Motion

Applications of Translational and Rotational Motion

11th1821
Algebra

AFAR NOTES- CPM

Compiled by CPM

College1,32717
English

Introduction to linguistics

Introduction to linguistics exam revision notes. Structure of language, typologies of language, parts of speech, language families, Chomsky, Hockett, semantic triangle, Prague Linguistic Circle, writing systems, acquisition and learning

1,30253

Students love us, and so will you.

4.6/5App Store
4.7/5Google Play
Stefan SiOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Samantha KlichAndroid user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

AnnaiOS user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.