About This Chapter
DNA Replication & Mutation - Chapter Summary and Learning Objectives
DNA, also known as deoxyribonucleic acid, contains the blueprints of living things, including humans; it's located in the nucleus of every cell. DNA has the ability to make copies of itself; however, sometimes things go wrong, and those mistakes are called mutations. Use this series of lessons to explore how DNA makes copies of itself, and how that process can sometimes go wrong. In these videos, an experienced instructor will outline the concepts of DNA replication, enzymes and how they function in related processes, and mutation as they relate to the field of life science. By the time you complete this chapter, you should be able to:
- Explain what DNA is and what it's made of
- Outline the steps taken by DNA to create more copies of itself
- Describe what enzymes are and their role in activation energy
- Discuss mutations - or mistakes - in copied DNA
|What is DNA?||Define what DNA is and its make-up.|
|How Does DNA Replicate?||Explain the process by which DNA makes copies of itself.|
|Function of Enzymes: Substrate, Active Site and Activation Energy||Describe what enzymes do, and how they interact with substrate to lower the activation energy of reactions.|
|Mutations: When DNA Is Copied Wrong||Explain what mutations are. Discuss how they occur and what happens when errors appear in replicated DNA.|
1. What is DNA?
In this lesson, we will learn what DNA is, what its characteristics and functions are, even where it is located and what information it contains. We'll also learn how the double helix is created. Find out more.
2. How Does DNA Replicate?
In this lesson, we will learn why DNA replicates as well as how. We'll also learn about the rates of replication and how DNA proofreads itself. After watching the lesson, you can complete a short quiz to test your knowledge.
3. Function of Enzymes: Substrate, Active Site & Activation Energy
In this lesson, we'll learn how enzymes function to lower the activation energy of a chemical reaction. Enzymes bind to their substrates to perform all kinds of important and essential cellular processes, as well as processes that help you enjoy a slice of pizza!
4. Mutations: When DNA Is Copied Wrong
In this lesson, we will learn how mutations, or errors in DNA, come about, what kinds of effects they may have, and how they can impact populations as a whole.
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Other chapters within the Life Science: Middle School course
- Introduction to Life Science
- Characteristics & Chemicals of Life
- The Parts of Cells
- Cell Division & the Cell Cycle
- How Living Organisms Get Energy
- Classification of Organisms
- The Origin & History of Life On Earth
- Genetics & Hereditary Traits
- Genetic Engineering Basics
- Natural Selection & Evolution in Life Science
- Microbiology & Types of Microbes
- Introduction to Ecosystems
- Types of Ecosystems
- Changing Ecosystems
- Birds & Mammals
- Animal Behavior & Communication
- Mammal Reproduction & Development
- The Respiratory System
- The Cardiovascular System
- The Blood Vessels
- The Digestive System
- The Urinary & Endocrine Systems
- The Brain & Nervous System
- The Muscular System
- The Skeletal System & Connective Tissue
- Sight, Hearing & Other Senses
- Health Issues & Concerns
- Plant Biology & Structure
- How Plants Grow & Reproduce
- Environmental Concerns
- Natural Resources
- Earth History & Geologic Time