CK-12 Foundation
Ck 12: Biology: Electron Transport
[Free Registration/Login may be required to access all resource tools.] Describes the electron transport chain.
CK-12 Foundation
Ck 12: Biology: Krebs Cycle
[Free Registration/Login may be required to access all resource tools.] Describes the Krebs cycle.
Estrella Mountain Community College
Estrella Mountain: Cellular Metabolism & Fermentation
This online biology book offers a comprehensive overview of cellular metabolism and fermentation. Content includes a look at glycolysis, anaerobic pathways, and aerobic respiration.
Khan Academy
Khan Academy: Oxidative Phosphorylation
Article presents an in-depth overview of oxidative phosphorylation which provides most of the ready chemical energy (ATP) used by the cells in your body.
ClassFlow
Class Flow: Cellular Respiration
[Free Registration/Login Required] This is a comprehensive, engaging overview of catabolic pathways that yield energy by oxidizing organic fuel. Students explore redox reactions, oxidation, reduction, and preview the stages of cellular...
Estrella Mountain Community College
Online Biology Book: Cellular Metabolism and Fermentation
College-level, online textbook explains cellular metabolism and fermentation using full-color illustrations and labeled diagrams.
CK-12 Foundation
Ck 12: Life Science: Fermentation
[Free Registration/Login may be required to access all resource tools.] Sometimes cells need to obtain energy from sugar, but there is no oxygen present to complete cellular respiration. In this situation, cellular respiration can be...
Khan Academy
Khan Academy: Cellular Respiration Review
Review concepts covered in high school biology dealing with cellular respiration. Page includes vocabulary as well as charts to explain the process.
Khan Academy
Khan Academy: Cellular Respiration
Test your knowledge of cellular respiration in this quiz made for high school biology students.
Khan Academy
Khan Academy: Cellular Respiration
Cellular respiration multiple choice questions to test students' knowledge of the topic from AP Biology.
BiologyWise
Biology Wise: Cellular Respiration in Plants
Explains what cellular respiration is, its function, and the three stages it goes through when it takes place in a cell.
Ducksters
Ducksters: Biology for Kids: Cell Mitochondria
Study the mitochondria in the science of biology on this site. Find out how these tiny organelles inside cells produce energy for the rest of the cell through respiration.
BiologyWise
Biology Wise: How Is Photosynthesis Related to Cellular Respiration
Explains what photosynthesis and cellular respiration are and how these two processes are connected.
BiologyWise
Biology Wise: Equation of Cellular Respiration
Describes the steps and the chemical equation for cellular respiration.
Open Curriculum
Open Curriculum: Into the Mitochondrion: Making Atp With Oxygen
The aim of this article is to relate the history of oxygen in the atmosphere to the evolution of photosynthesis, aerobic respiration, mitochondria, and life on earth.
PBS
Pbs Teachers: Scientific American: Forever Wild? Input and Output
Investigate the scientific principles of biospheres, and observe the effects of biological processes on closed systems.
University of Arizona
The Biology Project: Biochemistry: Metabolism Problem Set
Do you understand the fundamental concepts of metabolism? You can find out by going through the quizzes and accompanying tutorials of this resource.
BiologyWise
Biology Wise: What Is Anaerobic Respiration?
Explains what anaerobic cellular respiration is and how it differs from aerobic respiration. Discusses what this looks like in muscle cells, what the steps are, and the formula for anaerobic respiration.
BiologyWise
Biology Wise: The Function of Nadh and Fadh2 in Cellular Respiration
Explains what the coenzymes NADH and FADH2 are and the roles they play in cellular energy production and respiration.
BiologyWise
Biology Wise: Products of Glycolysis
Explains what happens during glycolysis in eukaryotic cells, what the products are, their composition, and their properties.
BiologyWise
Biology Wise: An Overview of the Difference Between Nadh and Nadph
NADH and NADPH are enzymes involved in cellular processes. Explains how NADH participates in catabolic reactions where energy is released and NADPH is involved in anabolic reactions where energy is consumed. Their functions and chemical...
Georgia State University
Georgia State University: Hyper Physics: Energy Cycle From Plants to Animals
Find out about the essential role energy plays in cell function and in sustaining life. Trace energy transformations as they pass from one living thing to another.
University of Tulsa
University of Tulsa: Cell Energetics
This is the index page for a slide series on cell energetics. Among the topics covered in the series is the role of enzymes in the metabolic process. Use the topic list to go straight to any slide.
BiologyWise
Biology Wise: Lactic Acid Fermentation
Fermentation of lactic acid occurs during anaerobic respiration. The two-step process is described here, how it takes place in human muscle cells, and industrial applications of lactic acid fermentation.