An interactive display of quasicrystals allows students to study the inner components and molecular make-up of these structures. Since the discovery of quasicrystals, a lot of efforts have been put on finding the locations of atoms...

Chemical composition is a section of a larger overview on Chemistry, covering a variety of aspects. This section focuses on elements, atoms, compounds, and structure. Examples, formulas, and pictures are provided.

Take a close look at the molecular structure of alkanes with these three-dimensional pictures. Manipulate the hydrocarbon molecules any way you want so you can see them from all views.

An interactive activity where you can zoom in to explore the macromolecules present in organisms. Learn about proteins, carbohydrates, lipids, and nucleic acid as you investigate the molecular structure of these types of macromolecules....

DNA Helix, DNA structure, DNA bases, Nucleotides, strands of DNA, Bonding in DNA, and bonding between bases are the topics delved into in this thorough site.

View the different molecular structures of carbon. A collection of interactive applets allows you to manipulate molecules and see them from all different viewpoints.

An animated tutorial showing how each chromosome consists of one continuous thread-like molecule of DNA coiled tightly around proteins. [1:42]

A slight departure from the classic view of DNA showing that the molecule is not exactly a twisted ladder. Good image and explanation to go with it.

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will describe the structure and polarity of a water molecule. They will also describe the hydrogen bonding that occurs in...

Students participate in a simulation which shows the movement of molecules across a cell membrane so that they understand passive and active cell transport. Students also use computational thinking skills by developing systems based on...

Take this interactive, multiple-choice quiz over the organic molecules important to life, then review your score and any missed questions at the end.

Take an interactive quiz over the molecules of life. After completing the quiz, check your score, and then revisit any incorrect question for further review.

This lesson plan explores the fundamentals of atoms and their structure. The building blocks of matter (protons, electrons, neutrons) are covered in detail. Students think about how atoms and molecules can influence new technologies...

Great site which gives the chemical structure and reactions involved in aspirin production. If you have the CHIME plug-in then it links to a better site with a 3-D model you can manipulate. OR BETTER YET, if your browser has Java, then...

Decent text based description of transcription. Good background.

Understandable lessons about numerous aspects about the composition, function, and interactions of proteins. Each starts with an interactive quiz and links to a tutorial.

An explanation of why carbohydrates are important nutrients for the human body. Chemical formulas and structures are used to demonstrate simple and complex carbohydrates.

An introduction to the mole, a unit of measurement that quantifies atoms and molecules.

What molecules were involved in the origin of life? This series explores the roles of RNA, DNA, and protein. Special attention is given to RNA because of its ability to perform several tasks necessary for life processes. All of the...

This simulation allows students to make observations about the structure and movement of particles in a liquid.

This diagram shows the chemical structure of methane. A methane molecule contains one carbon atom and four hydrogen atoms.

A great page for all around biochemistry and background information. Includes the molecular structure and most of the information relevant to its role in living cells.

This lesson covers chiral molecules, which are important in carbohydrate and protein chemistry. Understanding the difference in their structures helps with understanding the different biochemical properties of molecules with similar...

Hands-on lesson in which students play with puzzle pieces representing the DNA molecule to discover the molecular structure of DNA.