In this cells worksheet, students define 14 words associated with cells. They answer 12 short answer questions about the structure and function of the cellular system.

Students examine Morse code and how it is used.  In this secret codes lesson students decode messages, make their own codes and have other students crack the code.    

Students imagine themselves working as research scientists completing the end-steps of a molecular research project and interpreting the data. They compare the gene sequences of normal and abnormal mice and evaluate the protein product...

Explains the workings of the codon translation chart which provides the keys to the structure of amino acids. Includes a widget where one can input a nucleotide triplet combination and see which amino acid it represents. Includes RNA and...

The genetic code is actually the three letter combination of bases that codes for an amino acid. This article describes the discovery of this code. Article includes animations, pictures, video, biographical information, and quiz...

For this activity, students create a bracelet of beads using DNA code. Each letter represents an amino acid and is three beads. The authors suggest that even younger students would enjoy this activity, although older students will...

A stop codon is a nucleotide triplet in messenger RNA that signals the end of a protein during the translation process. Read about how this works, the different types of stop codons, and how a mutation can sometimes occur.

A start codon is a nucleotide triplet in a genetic sequence that occurs at the start of a protein's synthesis. Read about how this works and how a mutation can sometimes occur.

On this site, students learn about DNA and genes in the science of biology including the deoxyribonucleic acid molecule, nucleotides, codons, and interesting facts.

Provides detailed explanation of DNA's structure and function. Includes illustrations.

[Free Registration/Login Required] A website where students can match the base pairs of RNA to base pairs of DNA to understand how RNA is transcribed from DNA. Also on website is a short quiz over transcription.

Investigate gene expression with this collection of resources that explains how DNA is expressed to make RNA, how genes are turned "on" and "off", and what must occur for transcription to happen. The webpage explores gene expression by...

[Free Registration/Login may be required to access all resource tools.] Online activity covers the structure and function of nucleic acids. Students will learn about nucleotides, the different types of nitrogenous bases, and the...

Using a bead-bracelet simulation, construct a sequence of amino acids. Then, discover the effects of silent, point, and frameshift mutations.

A look at protein synthesis in words and pictures. This website discusses the processes of replication, transcription, and translation. Also covered is Beadle and Tatum research that explains that one gene codes for one polypeptide....

[Free Registration/Login may be required to access all resource tools.] Introduces the genetic code and how to read it.

This lesson will cover the process of transcription and its role in protein synthesis.