About This Chapter
HiSET: The Cell Cycle and Cell Division - Chapter Summary
The video lessons in this Cell Cycle and Cell Division chapter are designed to prepare you to answer the types of questions you will find on the HiSET Science examination. Learn about the function of DNA and discover what happens during the process of DNA packaging. Explore different kinds of cell division and examine the consequences of nondisjunction. With the help of these video lessons, you could:
- Understand the definition of a genome
- Identify the parts and physical features of chromosomes
- Describe the events that transpire throughout the life cycle of a cell
- Learn about DNA packaging and chromosome condensation
- Identify the phases of mitosis
- Study the process of cytokinesis
- Differentiate between sexual and asexual reproductive processes
- Describe the steps of meiosis I and II, and discover how chromosomes and cells are divided
- Learn about chromosomal disorders and chromosome segregation errors
The animated lessons in this Cell Cycle and Cell Division chapter include written transcripts. You can also use the video tags to switch between topics. The self-assessment quizzes and the chapter examination can be used to measure your learning and retention of the information.
HiSET - The Cell Cycle and Cell Division Objectives
The science subtest of the HiSET examination will measure your knowledge of a variety of scientific principles as well as your ability to evaluate scientific information. This chapter contains material that will be included on the life science portion of the examination, which makes up 50% of the questions on the 50 questions exam. You'll be expected to differentiate between observations, assumptions and hypotheses. You'll have 80 minutes to complete this test, and all questions are multiple choice.
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. 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.
3. 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.
4. 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.
5. 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.
6. 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
7. 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.
8. 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.
9. 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.
10. 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.
11. 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!
12. 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.
13. 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 HiSET Science: Prep and Practice course
- HiSET: Atoms, Elements & the Periodic Table
- HiSET: Inorganic Chemistry
- HiSET: Cell Biology
- HiSET: Biomolecules
- HiSET: Enzymatic Biochemistry
- HiSET: Cellular Respiration & Photosynthesis
- HiSET: Compounds & Chemical Bonds
- HiSET: Chemical Reactions, Acids & Bases
- HiSET: Classification of Organisms
- HiSET: Genetics & Evolution
- HiSET: Genetic Engineering Basics
- HiSET: Animal Reproduction & Development
- HiSET: Human Reproductive Anatomy & Physiology
- HiSET: Human Body Systems
- HiSET: Nervous, Immune & Endocrine Systems
- HiSET: Ecology & Ecosystems
- HiSET: Animal Behavior
- HiSET: Mechanics of Motion
- HiSET: Principles of Light
- HiSET: Energy & Heat
- HiSET: Electricity & Magnetism
- HiSET: Earth Science & Geologic Time
- HiSET: Earth's Spheres & Internal Structure
- HiSET: Weathering & Erosion
- HiSET: Minerals & Rocks
- HiSET: Plate Tectonics & Continental Drift
- HiSET: The Atmosphere
- HiSET: Astronomy