CK-12 Foundation
Ck 12: Biology: Krebs Cycle
[Free Registration/Login may be required to access all resource tools.] Describes the Krebs cycle.
Kent State University
Kent State University: Krebs Cycle
This page contains diagrams and formulas for the Krebs cycle. The page has seven different catagories. The page is written by Clarke Earley, Ph.D., a chemistry professor at Kent State University.
CK-12 Foundation
Ck 12: Krebs Cycle
[Free Registration/Login may be required to access all resource tools.] After studying the Krebs Citric Acid Cycle, students will be able to identify what happens to the product of glycolysis and explain the steps and results of the cycle.
Khan Academy
Khan Academy: The Citric Acid Cycle
Resource provides an overview of the steps of the citric acid cycle, also known as the Krebs cycle or tricarboxylic acid (TCA) cycle. Gives detailed examples of how this amazing cycle works and discusses the products of the cycle.
Clackamas Community College
Clackamas Community College: Citric Acid Cycle
This is a great site on the citric acid (Krebs) cycle. Each step of the cycle is written in easy-to-understand language, accompanied with diagrams.
Sophia Learning
Sophia: Krebs Cycle: Lesson 2
This lesson will introduce the Kreb's cycle and explain how it is used to convert pyruvic acid into carbon dioxide. It is 2 of 6 in the series titled "Krebs Cycle."
Sophia Learning
Sophia: Krebs Cycle: Lesson 3
This lesson will introduce the Kreb's cycle and explain how it is used to convert pyruvic acid into carbon dioxide. It is 3 of 6 in the series titled "Krebs Cycle."
Sophia Learning
Sophia: Krebs Cycle: Lesson 1
This lesson will introduce the Kreb's cycle and explain how it is used to convert pyruvic acid into carbon dioxide. It is 1 of 6 in the series titled "Krebs Cycle."
Khan Academy
Khan Academy: The Citric Acid Cycle
The citric acid cycle (also known as the Krebs Cycle) is actually a part of the much larger process called cellular respiration, the process where your body harvests energy from the food you eat. Yes, the citric acid cycle has the same...
ClassFlow
Class Flow: Krebs Cycle
[Free Registration/Login Required] Students engage in the third stage of cellular respiration- the Krebs cycle and the electron transport chain/oxidative phoshorylation.
Texas A&M University
Peer Curricula: Story Time: Hans Krebs
Read about Hans Krebs' childhood and how it influenced his interest in science. Read about the importance of mentors in his life as he did research in chemistry.
Chem4kids
Chem4 Kids: Cycles Around You
There are many cycles occurring in all of the Earth's organisms, including the Earth itself. This brief page highlights some of those cycles, making readers aware of how many cycles there are, big and small.
Khan Academy
Khan Academy: Steps of Cellular Respiration
Resource walks you through the four major stages of cellular respiration which include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation and traces how they connect up to one another.
Wikimedia
Wikipedia: Aerobic Respiration
Wikipedia provides an indepth yet brief description of the oxygen dependent respiration with links to Kreb's cycle and Oxidative phosphorylation.
CK-12 Foundation
Ck 12: Electron Transport
[Free Registration/Login may be required to access all resource tools.] Discover how a mitochondrial electron transport chain works. This tutorial helps students identify the products of the Krebs cycle, describe a chemiosmotic gradient,...
Concord Consortium
Concord Consortium: Stem Resources: Cellular Respiration
Web-based activity provides an opportunity for students to study cellular respiration in an up-close and personal way. By following atoms and molecules through an interactive animation, they will be able to see the changes that take...
Other
The Krebs Citric Acid Cycle Map
Great graphic for review of the Krebs, or citric acid cycles. Click on the terms for tutorial help and definitions.
Khan Academy
Khan Academy: Krebs (Citric Acid) Cycle and Oxidative Phosphorylation Questions
Krebs (citric acid) cycle and oxidative phosphorylation questions.
Ohio State University
Ohio State University: Respiration
Informative text is clearly written and supported by good illustrations and charts as well. A quiz is also provided at the bottom of the site.
Savvas Learning
Pearson's the Biology Place: Cell Respiration
This excellent interactive website about cellular respiration provides an overview then goes into the details that can be so difficult to understand. The practice, review, and quiz pages should help solidify understanding.
BiologyWise
Biology Wise: Cellular Respiration Diagram
The equation for cellular respiration is given and a diagram is provided that illustrates the process with glycolysis, the Krebs cycle, and the electron transport chain shown. Each of these steps is explained and a summary of the total...
BiologyWise
Biology Wise: Mitochondrial Matrix
Discusses the structure of the matrix inside a mitochondrion and how hundreds of concentrated enzymes are held there. The matrix takes part in mitochondrial functions such as the Krebs cycle, the electron transport chain, ATP synthesis,...
BiologyWise
Biology Wise: What Is Atp
Describes the structure of ATP and how it is produced through the pathways of glycolysis, the Krebs cycle, and electron transport phosphorylation.
BiologyWise
Biology Wise: Aerobic Respiration Steps
The steps in aerobic cellular respiration are explained in this resource. These include glycolysis, the Krebs cycle, and the electron transport chain.