Diagrams illlustrating the Hershey and Chase experiment that supported DNA as the hereditary material while it also showed protein was NOT the hereditary material.

Link için tıklayınız

[blue]Proteins[/blue]
GIF animation showing the formation of a peptide bond.
GIF animation showing an enzyme-substrate reaction.
[blue] DNA Replication, Transcription, and Translation[/blue]
GIF animation illustrating DNA replication by complementary base pairing.
GIF animation illustrating the replication of leading and lagging strands of DNA.
GIF animation illustrating RNA polymerase unwinding the DNA helix during transcription.
GIF animation illustrating the synthesis of mRNA complementary to DNA during transcription.
GIF animation illustrating RNA processing.
Flash Animation illustrating the formation of the initiation complex during translation.
Flash Animation illustrating the joining of the 50S ribosomal subunit to the initiation complex during translation.
Flash Animation illustrating the insertion of amino acids into a growing protein during translation.
Flash Animation illustrating the termination of translation.
Flash Animation summarizing translation.
[blue]Genetic Regulation[/blue]
GIF animation of the repressible trp operon in the absence of a co-repressor.
GIF animation of the repressible trp operon in the presence of a co-repressor. GIF animation of the inducible lac operon in the absence of an inducer.
GIF animation of the inducible lac operon in the presence of an inducer.
GIF animation an activator protein in the absence of an inducer.
GIF animation an activator protein in the presence of an inducer.
GIF animation showing antisense RNA.
GIF animation showing non-competitive inhibition by an allosteric enzyme.

What is DNA and what is it made of? You’ll read about the components of DNA (and RNA) and learn about the relationship between genes, chromosomes and DNA.

How is DNA reproduced? Every organism must produce copies of itself in order to pass on genetic information to its young before it dies…so must the cells in that organism, as well. How does the cell make a copy of itself and how is DNA copied as a part of that process?

What is the three-dimensional structure of DNA? The components which make up DNA come together in a specific way to form the DNA molecule. How do these components relate to one another to form DNA?

What is RNA and what are the functions of RNA? There are several types of RNA in cells, each with its own specific, important role in the cell. Why do cells need RNA if they have DNA?….we’ll find out!

If organisms need RNA, then how do they synthesize it? The process of transcription explains how RNA is synthesized. You’ll learn about the players in this process and how they work together to produce RNA.

Now that we have RNA, how do we make proteins from it? This question will be answered by looking at the process of translation. We’ll take a look at the players in this process, as well.