Ch 1: Understanding Cell Biology

About This Chapter

Enhance your knowledge of cell structure and function with this chapter. You can use this resource to help with biology classwork or to review material prior to taking an exam.

Understanding Cell Biology - Chapter Summary

This chapter helps you quickly and easily review cell theory, cellular respiration, chromosomes and more. Each short lesson contains definitions, examples and illustrations to ensure that you come away with a full understanding of this material. Once you have completed your review, you should be able to do the following:

  • Explain cell theory
  • Describe the functions of organelles
  • Discuss what a cell membrane is and types of transport across the cell membrane
  • Provide details about the human genome
  • Detail the structure of chromosomes
  • Define the structure of a nucleosome
  • List elements found in proteins, nucleic acids, carbohydrates and lipids
  • Understand the process of cellular respiration

Mobile-friendly lessons make it convenient to study when and where it's best for you, and you can easily contact instructors with any questions about this material. Tracking your progress through this chapter is simple using your Dashboard. Assess what you have learned and determine if you need further review by taking short quizzes at the end of each lesson.

8 Lessons in Chapter 1: Understanding Cell Biology
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.

Organelles in Cells: Definition & Functions

2. 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.

Transport Across the Cell Membrane

3. Transport Across the Cell Membrane

This lesson is on transport across the cell membrane. In this lesson, we'll review what a cell membrane is and what it's made of, and learn in detail about the three types of transport across the membrane.

Basic Genetics: The Genome & Chromosomes

4. 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

5. 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.

Nucleosome: Definition & Structure

6. Nucleosome: Definition & Structure

Each of your cells has about 2 meters of linear DNA. This has to be packed into a nucleus roughly 10 micrometers in diameter. This means your nucleus must be excellent at packaging your genetic material! This lesson tells you how your DNA is packaged.

Major Elements in Biological Molecules: Proteins, Nucleic Acids, Carbohydrates & Lipids

7. Major Elements in Biological Molecules: Proteins, Nucleic Acids, Carbohydrates & Lipids

Bacterial cells have complex macromolecules built from simple molecules. In this lesson, we will look at the major elements in the building blocks of proteins, nucleic acids, carbohydrates, and lipids.

Cellular Respiration: Energy Transfer in Cells

8. Cellular Respiration: Energy Transfer in Cells

Watch this short video to learn the basics about converting organic compounds into ATP, also known as cellular respiration. We'll look at an overview of the process.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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