Enter your Sign on user name and password.

Forgot password?
Sign In | Subscribe
Updated Biology Courses cardella

General Biology
Prof. Bryan Cardella, M.Ed.

 ap biology eaton

AP Biology 
Dr. Carleen Eaton, M.D.

Start learning today, and be successful in your academic & professional career. Start Today!
Loading video...
This is a quick preview of the lesson. For full access, please Log In or Sign up.
For more information, please see full course syllabus of Biology

  • Study Guides

An Overview of Metabolism

  • Hundreds of enzymes catalyze an array of metabolic reactions. Luckily, we don’t have to know all of the reactions to understand metabolism. We just need to master the underlying strategies.

  • For example, all organisms need a source of energy and raw materials. Different metabolic strategies have evolved to obtain these resources. We’ll learn how to recognize and classify organisms based on these traits.

  • All metabolic pathways must be regulated to avoid wasting energy and other precious resources. This also requires that biosynthetic and degradative pathways be independently controlled. Control can occur only when the reactions have large, negative free energy changes.

Educator®

Please sign in to participate in this lecture discussion.

Sign-InORCreate Account

Enter your Sign-on user name and password.

Forgot password?

Start Learning Now

Our free lessons will get you started (Adobe Flash® required).
 Get immediate access to our entire library.

Sign up for Educator.com

Membership Overview

  • Unlimited access to our entire library of courses.
  • Search and jump to exactly what you want to learn.
  • *Ask questions and get answers from the community and our teachers!
  • Practice questions with step-by-step solutions.
  • Download lesson files for programming and software training practice.
  • Track your course viewing progress.
  • Download lecture slides for taking notes.