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Ch 9: AP Biology - Cell Division: Help and Review

About This Chapter

The Cell Division chapter of this AP Biology Help and Review course is the simplest way to master how cells divide. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of cell division.

Who's it for?

Anyone who needs help learning or mastering AP Biology material will benefit from taking this course. There is no faster or easier way to learn AP Biology. Among those who would benefit are:

  • Students who have fallen behind in understanding chromosomes and cell division
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning science (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about cell division
  • Students who struggle to understand their teachers
  • Students who attend schools without extra science learning resources

How it works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the cell division chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the cell division chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any cell division question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

This chapter helps students review the concepts in a cell division unit of a standard AP Biology course. Topics covered include:

  • The genome
  • Chromosomal characteristics and structure
  • DNA packaging
  • Cytokinesis
  • Mitosis and meiosis
  • Aneuploidy and nondisjunction

16 Lessons in Chapter 9: AP Biology - Cell Division: Help and Review
The Genome

1. The Genome

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.

The Structure of Chromosomes

2. The Structure of Chromosomes

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.

The Cell Cycle

3. The Cell Cycle

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.

DNA Packaging and Chromosome Condensation

4. DNA Packaging and Chromosome Condensation

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.

Physical Features of a Chromosome

5. Physical Features of a Chromosome

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.

Mitosis I: The Mitotic Spindle

6. Mitosis I: The Mitotic Spindle

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

Mitosis II: Phases of Chromosome Segregation

7. Mitosis II: Phases of Chromosome Segregation

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.

Cytokinesis: Animal Versus Plant Cells

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.

Asexual Versus Sexual Reproduction

9. Asexual Versus Sexual Reproduction

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.

Overview of Meiosis

10. Overview of Meiosis

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.

Meiosis I: Reductional Cell Division

11. Meiosis I: Reductional Cell Division

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!

Meiosis II: Equational Cell Division

12. Meiosis II: Equational Cell Division

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.

Nondisjunction and Aneuploidy

13. Nondisjunction and Aneuploidy

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.

Centrosome: Definition & Function

14. Centrosome: Definition & Function

There are many different organelles found inside of our cells and each one carries with it specific functional responsibilities. In this lesson, we will be looking at centrosomes and the roles they play in cellular function.

Sister Chromatids: Definition & Concept

15. Sister Chromatids: Definition & Concept

In genetics, 'sister chromatids' are pieces of identical DNA that are crucial in the process of cell replication and division. In this lesson, we'll explore how sister chromatids fit in our genome as well as the role they play in both mitosis and meiosis.

Chromosome Banding: Definition & Techniques

16. Chromosome Banding: Definition & Techniques

Here we will discuss what chromosome banding is. We will also look at several different types of chromosome banding, techniques for chromosome banding, and why one would want to perform chromosome banding.

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