Khan Academy
Khan Academy: Biology: Energy and Enzymes: Atp and Reaction Coupling
Investigate ATP structure, ATP hydrolysis to ADP, and reaction coupling in this article.
Khan Academy
Khan Academy: Energy and Enzymes: Activation Energy
An information page about activation energy. Learn about activation energy, transition states, and reaction rates.
Biology Pages
Kimball's Biology Pages: Phenylketonuria (Pku)
Read about phenylketonuria and the tests used to diagnose it in those who might have inherited this recessive trait.
CK-12 Foundation
Ck 12: Plix: Acids and Bases in Biology
[Free Registration/Login Required] Interactive shows a graph illustrating the effect of pH on pepsin's reaction rate.
CK-12 Foundation
Ck 12: Physical Science: Biochemical Reaction Chemistry
[Free Registration/Login may be required to access all resource tools.] Definition of a biochemical reaction, the different types and the importance of enzymes in biochemical reactions.
BiologyWise
Biology Wise: Dna Replication Enzymes
Discusses what happens during DNA replication and describes the prime replication enzymes found in eukaryotes.
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: Function of Rennin Enzyme
Explains sources of rennin and what its functions and uses are.
Khan Academy
Khan Academy: Molecular Mechanism of Dna Replication
Learn the roles of DNA polymerases and other replication enzymes. Understand the leading and lagging strands and Okazaki fragments.
BBC
Bbc: Gcse Bitesize: Enxymes
This lesson focuses on enzyme-catalysed reactions and the effect of temperature, substrate concentration, and pH on the reaction rate. It provides a link to an assessment.
CK-12 Foundation
Ck 12: Biology: Proteins
[Free Registration/Login may be required to access all resource tools.] Discusses the structure and role of proteins.
CK-12 Foundation
Ck 12: Biology: Proteins
[Free Registration/Login may be required to access all resource tools.] Covers the structure and function of proteins.
McGraw Hill
Glencoe Biology: Chemical Reactions: Self Check Quiz
A quick, five question review over various concepts of chemical reactions.
Nobel Media AB
The Nobel Prize: Severo Ochoa Biographical
Read about the 1959 co-recipient of the Nobel Prize in Physiology -- Severo Ochoa -- who contributed to the "discovery of the mechanisms in the biological synthesis of ribonucleic acid and deoxyribobucleic acid."
The Franklin Institute
Franklin Institute Science Museum: Lysosomes
Part of a year-long high school biology class online project, this page discusses the two major roles of lysosomes.
Annenberg Foundation
Annenberg Learner: Applied Genetic Modification
Explore practical uses of genetic engineering techniques to generate a plant that produces a hepatitis B protein for potential vaccine use. Examine the use of restriction enzymes for cloning and plasmid mapping.
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,...
Howard Hughes Medical Institute
Hhmi: Biointeractive: Visualizing Gene Expression
Through a series of videos and narrated animations, learn how evolution affects gene expression in species. Find out how visualizing gene expression can help explain what a specific gene does.
Other
North Dakota State: Central Dogma
Information about how DNA is viewed in modern biology (it is at the center) and what its role is.
National Health Museum
Access Excellence: Dna Detectives
A hands-on activity from Access Excellence for advanced biology classes. Students are given a crime scenario and three suspects. Their mission is to determine 'Who Dunnit?' by obtaining and analyzing DNA samples. Requires extensive...
Science Education Resource Center at Carleton College
Serc: What Factors Influence How Efficiently the Work of a Cell Is Carried Out?
In this biology simulation, students discover what factors influence the action of enzymes on cellular work. Students will first explore the action of enzymes through a simulation in which their hands are the enzyme "toothpickase" and...
The Franklin Institute
The Franklin Institute: Restriction Enzyme Cleavage
A great step by step site for how DNA is prepared and plated in the process of electrophoresis.
Khan Academy
Khan Academy: Cell Cycle Regulators
This article looks at a few of the most important core cell cycle regulators: proteins called cyclins, enzymes called Cdks, and an enzyme complex called the APC/C.
Vision Learning
Visionlearning: Genetics: Gene Expression
Explore the connection of genes and enzymes in regards to heredity and genetics. Concepts associated with dominant and recessive traits are also presented.