About This Chapter
Overview of Cell Division - Chapter Summary
Let our professional instructors guide you through the process of cell division. By watching engaging video lessons, you'll review the cell cycle, chromosomal structure and binary fission. The videos also take you step-by-step through the processes of mitosis and meiosis, as well as cytokinesis. After you complete the chapter, you should be prepared to:
- List the steps of binary fission
- Explain the organization of the human genome
- Describe the structure and features of chromosomes
- Define cell cycle
- Understand the process of DNA packaging
- Identify the phases of mitosis and meiosis
- Distinguish between cytokinesis in animal and plant cells
- Differentiate between sexual and asexual reproduction
- Explain the effects of nondisjunction
Typically about five minutes long, our video lessons break down the complex concepts covered in this chapter on cell division. After watching a video, you can always review excerpts by using the video tags. We provide transcripts for all of our lessons as well, which include key terms in bold print. Be sure to also take the multiple-choice quizzes to assess your comprehension of the lessons' topics.
1. Binary Fission: Definition, Steps & Examples
Bacteria are all around you, some make you sick, some are helpful. This lesson will examine one way bacteria reproduce called binary fission. It will also give you some examples of bacteria you may encounter.
2. Basic Genetics: The Genome & Chromosomes
There are approximately 3 billion bases in the human genome. In this lesson, you'll learn more about the genome and its organization into chromosomes. We think about DNA often as the blueprint for life, but we can also think of it as the recipe for life with the nucleus being the library.
3. How is DNA Organized into Chromosomes? - Structure & Function
Explore the structure of chromosomes and see how DNA fits inside the nucleus of the cell. In this lesson, you'll learn about histones, chromatin and nucleosomes.
4. The Cell Cycle: Definition, Phases & Sequence
Learn about the dividing and non-dividing states of the cell and discover the different phases of the cell cycle, including interphase, cytokinesis, and the stages of cell division.
5. How is DNA Packaged? - Chromosome Condensation & Karyograms
Learn how DNA packaging makes it possible to fit approximately seven feet of DNA inside a single cell. You'll see how chromosome condensation helps cells get ready for cell division.
6. Parts of a Chromosome & Their Roles
Learn all about chromosomes, including the different parts of a chromosome and the types of chromosomes in diploid organisms like humans. Learn the vocab used with chromosomes.
7. Mitotic Spindle: Definition, Formation & Function
Condensation makes DNA ready / And microtubules hold it steady / A microtubule's a fancy rope / To move the DNA is the hope / From spindle poles they do extend / To align each chromosome in the end
8. Stages of Mitosis: Description & Sequence
Let's take a second look at mitosis and focus on the phases of chromosome segregation. As we concentrate on chromosomes, you'll learn the tricky dance that takes place through all five phases of mitosis.
9. Cytokinesis: Animal Versus Plant Cells
What's a cell to do when it must divide in two? We'll explore cytokinesis and see how the process can differ in important ways when it comes to plant versus animal cells.
10. Asexual vs. Sexual Reproduction: Comparison & Characteristics
Did you know that some organisms can reproduce without a mate? Check out this video lesson on asexual versus sexual reproduction to discover the different ways organisms can reproduce and the main differences between mitosis and meiosis.
11. Meiosis: Comparison to Mitosis, Crossing Over & Process
Welcome to meiosis, a realm of division doubled for reproduction untroubled. You'll get a preview of both divisions of meiosis and see what it takes to go from a diploid cell to a haploid gamete.
12. Meiosis I Stages: Prophase I, Metaphase I, Anaphase I & Telophase I
How does meiosis keep track of homologs and reduce the genome by half? Know these answers and more as we navigate the steps of meiosis I. This lesson will be tetradical!
13. Meiosis II: Definition, Stages & Comparison to Meiosis I
Behold round two of meiotic cell division! You'll see how meiosis II keeps the genome intact and gives the final push to produce haploid gametes, which make the world go round.
14. Nondisjunction & Aneuploidy: Definition & Examples
Learn why proper chromosome segregation is essential during meiosis. We'll see how having an extra chromosome can lead to Down Syndrome and also examine the consequences of having too few chromosomes. Disruptions to the delicate balance of cell division can have far-reaching effects.
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Other chapters within the NES Biology (305): Practice & Study Guide course
- About the NES Test
- Safety Procedures and Hazards in Scientific Research
- Overview of Chemical Bonds and Reactions
- Structure and Function of Macromolecules
- How Enzymes Work
- Basics of Metabolic Biochemistry
- Process of DNA Replication
- The Transcription and Translation Process
- Basics of Gene Mutations
- Mechanisms of Biological Evolution
- Plant Biology
- Plant Reproduction and Growth
- Requirements of Biological Systems
- Animal Reproduction and Development
- Male Reproductive System
- Female Reproductive System
- Physiology I: The Circulatory, Respiratory, Digestive, Excretory, and Musculoskeletal Systems
- Physiology II: The Nervous, Immune, and Endocrine Systems
- Biology: Diseases & Prevention
- Cardiovascular Disorders
- Neurological Disorders
- Common Human Disorders
- Populations and Biological Communities
- Overview of Animal Behavior
- Ecosystems and Biomes
- Biochemical Cycles
- Human Activity and the Biosphere
- NES Biology Flashcards