Ch 16: Praxis Biology & General Science: Cellular Division

About This Chapter

Use our video lessons to examine the genome and chromosomal structure. Learn about mitosis, meiosis and cytokinesis as you prepare for the Praxis II Biology and General Science exam.

Praxis Biology & General Science: Cellular Division - Chapter Summary

Consider using these video lessons on cellular division as you start preparing for the Praxis II Biology and General Science test. You'll find out how the genome is organized into chromosomes and about the different versions of chromosomes. This chapter will also provide details on the cell cycle and the physical features of a chromosome. You'll get an in-depth look at the different strategies of cytokinesis that are employed in animal cells versus plant cells and find out about cell cycle checkpoints. After you complete this chapter you'll be familiar with:

  • Structure and organization of chromosomes
  • DNA packaging and chromosome condensation process
  • Mitotic spindle components and chromosome alignment
  • Phases in the mitosis process
  • Two divisions in meiosis
  • Chromosome segregation errors
  • Chromosomal disorders in humans

These lessons are led by instructors well-versed in the study of molecular and cellular biology. After you watch the video lessons available on this topic, you can review the key points with the video tags that take you back to important concepts in the videos. You'll also find lesson summaries at the end of each lesson and some lessons have links that provide you with more detailed information on critical concepts.

Praxis Biology & General Science: Cellular Division Objectives

The Praxis II Biology and General Science test is used to evaluate aspiring teachers' preparedness for teaching this subject to students. The test is divided into eight content areas covering cellular and molecular biology, science methodologies, animal and plant diversity, genetics and evolution, chemistry, earth and space science, ecology and physics.

Cellular division is a subject that is covered in the molecular and cellular biology content area of the test. Questions covering cellular division and related topics represent 15% of the test, and you'll find about 18 questions in this content area. The 120 questions on the biology and general science test are all multiple-choice questions. Use the self-assessment quizzes that accompany each lesson to prepare for the style of the questions you'll find on the test.

12 Lessons in Chapter 16: Praxis Biology & General Science: Cellular Division
Test your knowledge with a 30-question chapter practice test
Basic Genetics: The Genome & Chromosomes

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.

How is DNA Organized into Chromosomes? - Structure & Function

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.

The Cell Cycle: Definition, Phases & Sequence

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.

How is DNA Packaged? - Chromosome Condensation & Karyograms

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.

Parts of a Chromosome & Their Roles

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.

Mitotic Spindle: Definition, Formation & Function

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

Stages of Mitosis: Description & Sequence

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.

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.

Meiosis: Comparison to Mitosis, Crossing Over & Process

9. 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.

Meiosis I Stages: Prophase I, Metaphase I, Anaphase I & Telophase I

10. 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!

Meiosis II: Definition, Stages & Comparison to Meiosis I

11. 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.

Nondisjunction & Aneuploidy: Definition & Examples

12. 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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Other Chapters

Other chapters within the Praxis Biology and General Science: Practice and Study Guide course

Support