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Ch 9: GRE Biology: The Cell Cycle

About This Chapter

Make the most of your study time with concise yet informative video lessons on mitosis and meiosis. Use them along with the self-assessment quizzes to prepare for cell structure and function questions on the GRE Biology exam.

GRE Biology: The Cell Cycle - Chapter Summary

Learn all the mitosis and meiosis concepts you'll need to successfully answer GRE Biology questions on the cell cycle. Instructors teaching this chapter's lessons walk you through the following topics:

  • Chromosome structure
  • Stages in the cell cycle
  • Chromosome condensation
  • The mitotic spindle
  • Chromosome segregation
  • Asexual and sexual reproduction
  • Stages in meiosis I and II
  • Chromosome segregation errors

This chapter includes self-paced video lessons and transcripts you can access as many times as you need to understand each step in the cell cycle. There are also self-checking quizzes useful for tracking your progress through this test-prep course.

GRE Biology Objectives

GRE subject tests are administered three times a year to prospective graduate students. Test scores can be used to supplement applicants' admissions materials and demonstrate academic strength in their field of interest.

The GRE Biology test consists of approximately 190 multiple-choice questions. Between 16% and 17% of them focus on cell structure and function. Use the lessons in this chapter to prepare for those requiring a familiarity with the stages involved in cell growth and division.

13 Lessons in Chapter 9: GRE Biology: The Cell Cycle
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.

Asexual vs. Sexual Reproduction: Comparison & Characteristics

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.

Meiosis: Comparison to Mitosis, Crossing Over & Process

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.

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

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!

Meiosis II: Definition, Stages & Comparison to Meiosis I

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.

Nondisjunction & Aneuploidy: Definition & Examples

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.

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

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