About This Chapter
TExES Life Science: Cell Cycle & Division - Chapter Summary
This chapter provides information that is designed to enhance your performance on the TExES Life Science examination. Its explanatory video lessons illustrate what happens throughout the lifetime of a cell. As you watch the videos, you'll explore chromosome movement, re-examine the various phases of the cell cycle and re-discover what happens during the stages of meiosis. Let this chapter's videos help you with:
- Defining and understanding the features and structures of genomes and chromosomes
- Explaining the process of DNA packaging and chromosome condensation
- Describing the events of the cell cycle
- Explaining the differences between mitosis and meiosis, and understanding their phases
- Defining reductional cell division and equational cell division
- Explaining the ramifications of nondisjunction and aneuploidy
- Discussing the properties of embryonic and adult stem cells
The seasoned video instructors will attempt to bring these concepts into sharper focus for you. In turn, you could go on to properly answer questions on the cell cycle and cell division when you sit for the TExES Life Science examination. Take advantage of the opportunity to study around your schedule. Quickly locate information with the video tags or look over the text transcripts. If you have questions, submit them to the experts. You may also take the convenient quizzes that follow every lesson.
1. 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.
2. Chromosomes: Structure & Physical Features
You've probably heard about chromosomes before, but how much do you truly know about them? This lesson will discuss their structure and features and will go over all of the vocabulary you need to know to be a chromosome expert!
3. 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.
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. Overview of Mitosis: Mitotic Spindle & Phases of Chromosome Segregation
Have you ever wondered how we grow? We start off as tiny embryos that eventually develop into adult humans, but how? The answer is through mitosis. We will look at mitosis and some specifics of it here.
6. 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.
7. 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.
8. Overview of Reductional & Equational Cell Division in Meiosis
This lesson is going to give a general overview of the two divisions that take place during meiosis. We will take a look at why these divisions are referred to as reductional and equational division.
9. 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.
10. What Is Cell Differentiation? - Process, Importance & Examples
In this lesson, you will learn how your cells become specialized. This specialization of cells allows them to perform different functions and create different parts of your body.
11. Internal & External Factors that Regulate Cell Division
Cells can be incredibly active, carrying out processes like growth and division. To coordinate these activities, the cell uses a range of intracellular and extracellular factors.
12. Cancer at the Level of the Genome
This lesson will delve into the genetic changes that may occur during cancer formation. You'll learn about proto-oncogenes, oncogenes, tumor suppressor genes, viral oncogenesis, p53, and more.
13. Embryonic and Adult Stem Cells: Uses, Origins & Properties
How can we grow a brand new windpipe? Or a heart? In this lesson, we'll learn about embryonic and adult stem cells and how scientists are using them to give people a new lease on life.
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Other chapters within the TExES Life Science 7-12 (238): Practice & Study Guide course
- TExES Life Science: Overview of the Field
- TExES Life Science: Scientific Inquiry
- TExES Life Science: Lab Equipment, Processes & Safety
- TExES Life Science: Scientific Systems & Models
- TExES Life Science: Matter & Atomic Structure
- TExES Life Science: Cell Biology
- TExES Life Science: Prokaryotic Cells
- TExES Life Science: Cell Communication
- TExES Life Science: Inorganic Chemistry
- TExES Life Science: Organic Compounds
- TExES Life Science: Nucleic Acids
- TExES Life Science: Enzymes
- TExES Life Science: Protists, Fungi & Viruses
- TExES Life Science: Metabolic Biochemistry
- TExES Life Science: DNA Replication
- TExES Life Science: DNA Transcription & Translation
- TExES Life Science: Genetics & Heredity
- TExES Life Science: Genetic Mutations
- TExES Life Science: Biological Evolution
- TExES Life Science: Taxonomy & the Diversity of Life
- TExES Life Science: Plant Cells
- TExES Life Science: Plant Biology
- TExES Life Science: Plant Reproduction & Growth
- TExES Life Science: Animals
- TExES Life Science: Human Body Systems
- TExES Life Science: Human Reproduction & Development
- TExES Life Science: Homeostasis of Organisms
- TExES Life Science: Biology & Behavior
- TExES Life Science: Interdependence of Life & Environmental Systems
- Learning & Instruction for the Science Classroom
- TExES Life Science 7-12 Flashcards