Ch 12: Cell Biology & Division

About This Chapter

Meiosis and mitosis, eukaryotic and prokaryotic. Dive into the amazing world of microbiology in this engaging chapter. Let us help you sort through and understand important cell biology terms and processes.

Cell Biology & Division - Chapter Summary

Our biology experts are ready to teach you about the interesting microscopic foundations of living things: cells. Join them as they explain cell theory and the mechanics of cell cycles, growth, and division. In this chapter, you can first learn about cell structures and their function. Then our lessons will show you how cells define us and transport necessary nutrients to our bodies. We'll also take a look at viruses and genetics and how they relate to our cells. You'll also have the opportunity to study the differences between mitosis and meiosis and nondisjunction vs aneuploidy.

Once you have completed this comprehensive chapter, you should be able to:

  • Explain cell theory
  • Compare eukaryotic and prokaryotic cells
  • Model the structure and parts of a cell
  • Describe viruses and their cycles
  • Explain how cells are related to genetics
  • Model mitosis, meiosis, and cell transportation mechanisms
  • Define and list examples of nondisjunction and aneuploidy

Our professional instructors use short videos to present the information in an engaging way. To enhance your study, each lesson is accompanied by a transcript and a self-assessment quiz. Also, the video player has a Timeline feature which allows you to skip back to review key ideas in each lesson. Use the quizzes to evaluate your level of understanding with the material and track your progress form your Dashboard. Have fun learning about cells!

10 Lessons in Chapter 12: Cell Biology & Division
Test your knowledge with a 30-question chapter practice test
What is Cell Theory? - Definition & Parts

1. What is Cell Theory? - Definition & Parts

Cell theory is a fundamental theory in biology that makes generalizations about cells. This lesson will help you understand the three main principles of cell theory.

Eukaryotic and Prokaryotic Cells: Similarities and Differences

2. Eukaryotic and Prokaryotic Cells: Similarities and Differences

In this lesson, we discuss the similarities and differences between the eukaryotic cells of your body and prokaryotic cells such as bacteria. Eukaryotes organize different functions within specialized membrane-bound compartments called organelles. These structures do not exist in prokaryotes.

Organelles in Cells: Definition & Functions

3. Organelles in Cells: Definition & Functions

This lesson will focus on the major organelles that are found inside eukaryotic cells. It will discuss their structures and functions. The differences in organelles found in plant and animal cells will also be covered.

Active & Passive Transport in Cells

4. Active & Passive Transport in Cells

Every second of every day, your cells are restocked with vital nutrients while getting rid of waste products. How does all this go on, you ask? Find out in this lesson on active and passive transport in cells.

Viruses: Bacteriophage Lytic and Lysogenic Cycles

5. Viruses: Bacteriophage Lytic and Lysogenic Cycles

Viruses are generally not only our enemy but also the enemy of many other organisms. Bacteriophages are viruses that infect specific bacteria. In this lesson, we'll discuss their basic structure and infection cycle.

Basic Genetics: The Genome & Chromosomes

6. 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.

The Cell Cycle: Definition, Phases & Sequence

7. 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.

Stages of Mitosis: Description & Sequence

8. 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.

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.

Nondisjunction & Aneuploidy: Definition & Examples

10. 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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