magiclanternmedia.ca

Countries: CA

  • Genes, Mutations and Viruses

    Describes different types of mutations in genes and how they are inherited. Uses sickle cell anemia as an example of a mutation that occurs in certain human populations. Examines the effects of environmental mutagens on cells and how viruses change DNA.

  • Kinetic and Potential Energy Changes to States of Matter

    Graphs are generated to illustrate kinetic and potential energy changes to states of matter. Molecular animation further illustrates this concept. Defines molar enthalpy terms for phase changes and discusses real-life applications.

  • Manipulating DNA

    Demonstrates how restriction enzymes and gel electrophoresis are used to manipulate DNA in genetic engineering experiments. Simulates bacterial transformation and explores gene therapy as a potential treatment for people with cystic fibrosis.

  • Molar Enthalpy of Solution

    Explains how energy released by one substance equals energy absorbed by another. Calorimetry experiments show the amount of energy transferred when hot water is added to cold. Experiments determine molar heats of endothermic and exothermic reactions.

  • Molecular Genetics and the Human Genome Project

    Outlines the Human Genome project, its parameters and potential impacts. Uses models to demonstrate the complexity of gene mapping and the process for isolating genes.

  • The Enthalpy of Phase Changes

    Determines the molar enthalpy of a phase change by assuming that kinetic and potential energy changes of a substance undergoing a temperature and phase change are equal to kinetic energy of the calorimeter.

  • The Hardy-Weinberg Principle

    Presents the Hardy-Weinberg principle and its underlying concepts of population equilibrium. Uses animated graphics, Punnett squares and simulations to determine the frequency of alleles within a population.

  • Molar Enthalpies and Formation Reactions

    Explains enthalpy changes in terms of rearrangement of chemical bonds and examines how to graphically determine enthalpy change for a reaction using known enthalpy changes for other reactions.

  • Gene Frequencies, Natural Selection and Speciation

    Analyses how factors such as genetics drift, gene flow, mutation and random mating lead to changes in the gene pool. Talks with a palaeontologist about how natural selection and speciation might have occurred. Takes a journey to the Burgess Shale.

  • Hess’s Law and Enthalpy Communication

    Shows how enthalpy changes can be communicated: as a term in an equation; as a delta H or molar delta H notation; and as a potential energy diagram. Demonstrates Hess’s Law using calorimetry, potential energy diagrams and molar enthalpies of formation.