Molecular Dynamics Model
The EJS Molecular Dynamics model is constructed using the Lennard-Jones potential truncated at a distance of 3 molecular diameters. The motion of the molecules is governed by Newton's laws, approximated using the Verlet algorithm with the indicated time step. For sufficiently small time steps dt, the system's total energy should be approximately conserved.
Molecular Dynamics Demonstration Model
The EJS Molecular Dynamics Demonstration model is constructed using the Lennard-Jones potential truncated at a distance of 3 molecular diameters. The motion of the molecules is governed by Newton's laws, approximated using the Verlet algorithm with the indicated Time step. For sufficiently small time steps dt, the system's total energy should be approximately conserved. Users can select various initial configurations using the drop down menu.
1.6 Signalling proteins can act as molecular switches
This unit explains the general principles of signal transduction and specifically, how even the simplest organisms can detect and respond to events in their ever-changing environment.
Molecular reaction dynamics
This package, written in 1998, includes interactive questions and demonstrations on the dynamics of chemical reactions. The aim is to show the effect of the potential energy surface, on reaction rates. It is intended for third or fourth year undergraduates in Chemistry. To download, click on View Download and follow the instructions. To uninstall, use the standard Windows option of "Add or Remove Programs".
Sextillion: Reaction Stoichiometry - Kristie Boering, Berkeley Chemistry
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What is Your Reaction? Chemical Reactions - Kristie Boering, Berkeley Chemistry
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Shape Matters: Molecular Shape - Kristie Boering, Berkeley Chemistry
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Overview Molecular regulation - Richard Malkin, Berkeley Biology
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Housing Co-Op: Molecular Orbitals - Kristie Boering, Berkeley Chemistry
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Molecular Orbitals
http://chemistryfm.blogs.lincoln.ac.uk
Find out what occurs in the Molecular world with your students
What lives in the nano world? You'll find out here through interactive activities, a gallery, and more! By Rensselaer’s Nanoscale Science and Engineering Center for Directed Assembly of Nanostructures. You'll need flash to utilise all
Compound Interest: Heats of Reaction - Kristie Boering, Berkeley Chemistry
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Forensic Molecular Biology
This course covers history, scientific concepts, methods, practices, instrumentation, interpretation, statistics and court issues of forensic DNA analysis via lectures, hands-on activities/laboratories, and videos. Collection, documentation and preservation of biological evidence, bioethics, QA, validation, admissibility and training will also be covered.
Action-Reaction! Rocket
Students construct a rocket from a balloon propelled along a guide string. They use this model to learn about Newton's three laws of motion, examining the effect of different forces on the motion of the rocket.
Reaction Stoichiometry
Reaction stoichiometry allows us to determine the amount of substance that is consumed or produced by a reaction. The following video considers the first part of this: how much of a reactant is consumed in a chemical reaction. Product formation is discussed elsewhere.
Calculating Molecular Weight
The molecular weight is the mass of one mole of a substance. Usually, the units used for this are grams per mole. In this movie, we show how to calculate the molecular weight of a substance from the atomic weights given on the periodic table. On another page, we use the molecular weight to convert between the macroscopic scale (grams of a substance) and the microscopic scale (number of molecules of that substance).
Finding the Empirical Formula from a Molecular Formula
Elemental analysis is a useful qualitative analysis technique since it allows us to check if a sample is consistent with a given molecular formula. For instance, suppose we believe our sample is benzene (C6H6). We can compare the following:The empirical formula (CH) obtained from the molecular formula of benzene (C6H6); The empirical formula obtained from a elemental analysis of the sample. If the two empirical formulae do not agree, then the sample is not benzene. If the formulae agree, then ou
Declaration of Independence
Hear the Declaration of Independence read in its entirety by Thomas Jefferson interpreter Bill Barker.
Virtual laboratories in Molecular and Cell Biology - Immuno-electron-microscopy
A virtual laboratory that includes immuno-gold labelling and transmission electron micrography (immuno-EM). It allows the student to study intracellular-traffic pathways of two cell-surface receptor molecules, following stimulation of the cells with their specific ligand, for different time periods. The programme first introduces the theory underlying the techniques and includes a video of EM work in a real laboratory. The student is then taken through a series of questions which requires them t
Virtual laboratories in Molecular and Cell Biology - Intracellular signalling
A virtual laboratory which allows users to analyse intracellular signalling pathways. The programme allows the student to stimulate cells for different periods of time and analyse phosphorylation/activation of kinases in the signalling pathways, using SDS-PAGE and immunoblotting. Use of different cell types (dominant-negative mutants) and pull-down assays allows them to derive the hierarchy in the signalling pathways. The programme first introduces the theory behind the techniques. It then takes
