Khan Academy: Restriction Enzymes & Dna Ligase

Show your class why restrictions aren't always a bad thing. In the third segment of a four-part series, the instructor develops the idea of restriction enzymes. Pupils learn how scientists use restriction enzymes in DNA analysis and DNA...

The discovery of restriction enzymes and their applications in DNA analysis has proven to be essential for biologists and chemists. This lesson focuses on restriction enzymes and their applications to DNA analysis and DNA fingerprinting....

A video discussing the molecular structure of DNA. Understand that DNA is made up of a phosphate, deoxyribose sugar, and one of the four nitrogen base. Video also explains how the nitrogen bases pair up to form the double helix...

Learn the roles of DNA polymerases and other replication enzymes. Understand the leading and lagging strands and Okazaki fragments.

Learn about the antiparallel structure of DNA strands which can by 5 feet to 3 feet directionality. [9:57]

Find out how Alfred Hershey and Martha Chase showed conclusively that DNA is the genetic material. [8:49]

Learn the molecular structure of DNA including the nucleotide, nitrogenous base, and phosphate. [13:00]

Look at the molecular structure of DNA. Investigate nucleotides, nitrogenous bases, and phosphates. [13:00]

The metaphors used here to describe the "cut and paste" procedures for genetic engineering will really help your biologists in their understanding of restriction enzymes and DNA.  The uses of genes that are isolated and incorporated...

An article that reviews over the different types of energy: kinetic, potential, and chemical.