About This Chapter
Who's it for?
Anyone who needs help learning or mastering high school biology material will benefit from taking this course. There is no faster or easier way to learn biology. Among those who would benefit are:
- Students who have fallen behind in understanding biochemical reactions and how enzymes work
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning science (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn how enzymes work
- Students who struggle to understand their teachers
- Students who attend schools without extra science learning resources
How it works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the enzymes chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the enzymes chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any enzyme question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students will review:
This chapter helps students review the concepts in an enzymes unit of a standard high school biology course. Topics covered include:
- Enzyme functions
- Enzyme reactions
- Coenzyme functions and interactions
- Cofactor functions and interactions
- Prosthetic group functions and interactions
1. 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!
2. Enzyme Activity & Inhibition: Structure, Substrates, pH & Temperature
Enzymes appreciate the right working conditions. Can you blame them? We all work best in the correct environment. In this lesson, we'll learn how substrate concentration, temperature, and pH affect enzyme activity and structure.
3. Coenzymes, Cofactors & Prosthetic Groups: Function and Interactions
Some enzymes require helpers to recognize a substrate or complete a reaction. These helpers include cofactors, coenzymes, and prosthetic groups, which are required for some enzymes' functions.
4. Enzymatic Reactions: Inhibition and Regulation
Enzymes are generally not allowed to run uncontrolled in a cell. While they are useful in catalyzing reactions, there is a time and place for everything. In this lesson, we'll discuss enzyme activators and inhibitors that regulate these reactions positively and negatively, respectively.
5. The Enzyme Rate of Reaction Equation
This lesson discusses what rate means and how it relates to an enzyme reaction. It delves into ways of determining reaction rates as related to enzymes and describe the most common equation used to determine the rate of a reaction.
6. Denatured Enzyme: Definition & Overview
In this lesson, you'll learn the definition of an enzyme, as well as about the important role enzymes play in chemical reactions. You'll also learn about the different chemical factors that can cause an enzyme to become denatured.
7. Enzyme Inhibitor: Definition & Examples
Enzyme inhibition is an important process of regulation within the cell. In this lesson, you will learn what an enzyme is and three ways that it can be inhibited.
8. Optimum pH for Enzymes
This lesson reviews what pH is and what different pH levels mean. It also gives a brief definition of enzymes and discusses what is meant by optimum pH and how it relates to enzymes.
9. What is Catalase? - Definition, Structure & Reaction
In this lesson, we discuss the structure, function, and importance of catalase. Catalase is an enzyme involved in removing toxic substances from your body. Here, you learn how that happens. A brief quiz is also included.
10. Zymogen: Granules & Activation
In this lesson you will be reminded what a zymogen is, and discover what zymogen granules are: where they are found and how they and zymogens can be activated.
11. Effect of Enzyme Concentration on Enzyme Activity
In this lesson, we'll explore what an enzyme is, what an enzymatic reaction is and what happens to the rate of a reaction if you add more enzymes to a solution.
12. Effect of pH on Enzyme Activity
Let's explore the relationship between enzymes and pH. Learn how enzymes function, what pH really means, and how the two interact to result in optimal enzymatic activity.
13. Effect of Temperature on Enzyme Activity
In this lesson we will explore what an enzyme is, how an enzyme functions and then explore in what way temperature may affect the activity of an enzyme.
14. Factors that Affect Enzyme Activity
This lesson focuses on enzyme activity. We'll go over what an enzyme is and how it's used in the body. We'll also look at the different factors that affect enzyme activity, both positively and negatively.
15. How Do Enzymes Help Digestion?
This lesson explores enzymes and their role in digestion. In this lesson we'll cover what an enzyme is, how digestion works, and how enzymes work together to break down food for your body.
16. What Is the Mechanism of Enzyme Activity?
Have you ever wondered what an enzyme is and what it does? In this lesson, we'll learn what an enzyme is and how it does its job in the cell - the mechanism of enzyme activity. We'll also look at an example of an enzyme mechanism.
17. Which Organelle Contains Enzymes for Intracellular Digestion?
In this lesson, we'll be learning about the lysosome, which is responsible for intracellular digestion. We'll learn the structure and function of this unique organelle, the specific enzymes involved, and its role in human health.
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