About This Chapter
GRE Biology: Enzymatic Biochemistry - Chapter Summary
Become well-versed with enzymatic biochemistry by studying the lessons that make up this chapter. The fun video components focus on illustrating the major enzyme points to boost your understanding. Topics covered throughout the chapter are as follows:
- Enzymatic reactions
- Enzyme partners such as cofactors
- Environmental effects on enzyme structure and activity
- Activation energy
Review the lesson transcripts that correspond with the video lessons for an effective studying strategy. While you're going over the videos, you can use the timeline to easily jump to particular portions you want to study more.
GRE Biology Objectives
The cellular structure and function part of the GRE Biology subject test contains the questions regarding enzymes and consists of roughly 17% of the exam's material. This chapter's videos and quizzes prepare you for the enzymatic questions that you will see. All questions on the GRE Biology subject test are multiple-choice.
Passing the GRE Biology test can help you demonstrate your mastery of this topic, and your test results can be included in your application packet to graduate schools.
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.
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