[Free Registration/Login may be required to access all resource tools.] Module describes how DNA's structure and function was discovered while summarizing the process of DNA replication. This activity also explains Chargaff's rules and...

[Free Registration/Login may be required to access all resource tools.] An overview of RNA, its three main types and their functions are discussed in this tutorial. After completing this activity, students will be able to compare DNA to...

[Free Registration/Login may be required to access all resource tools.] The process of transcription is defined and discussed in protein synthesis. Students will learn about mRNA processing and know the significance of polyadenylation.

[Free Registration/Login may be required to access all resource tools.] How do you go from four letters to 20 amino acids? You need a code. This module introduces the genetic code and how to read it, defines codon and reading frame, and...

[Free Registration/Login may be required to access all resource tools.] Translation involves translating the language of nucleotides to the language of amino acids. During this activity, translation in protein synthesis is explored along...

[Free Registration/Login may be required to access all resource tools.] Everyone has mutations. Mutations are essential for evolution to occur. This tutorial defines mutations and explains the different types: somatic mutations, germline...

[Free Registration/Login may be required to access all resource tools.] Learning activity defines mutagen, covers the causes of mutation, and gives examples of spontaneous mutations.

[Free Registration/Login may be required to access all resource tools.] Effects of mutations can be beneficial or they can be harmful. This tutorial describes the effects and provides examples of each.

[Free Registration/Login may be required to access all resource tools.] Gene expression is the use of a gene whose product is necessary for that moment. Whenever a particular protein is needed, gene expression provides it. This module...

[Free Registration/Login may be required to access all resource tools.] Provides an overview of gene regulation in prokaryotic cells while defining operon, explaining the roles of the operator, the promoter, and the repressor, and...

[Free Registration/Login may be required to access all resource tools.] Gene regulation in eukaryotic cells is described along with the role of the TATA box and homeobox genes.

[Free Registration/Login may be required to access all resource tools.] What are the differences and similarities between viruses and living things? This tuorial covers the characteristics of viruses and viral reproduction.

[Free Registration/Login may be required to access all resource tools.] Describes the structure of viruses and variations in virus shapes such as cylindrical, icosahedral, complex, or enveloped.

[Free Registration/Login may be required to access all resource tools.] How do viruses replicate? In this lesson, students will learn how a virus produces new copies of itself.

[Free Registration/Login may be required to access all resource tools.] Viruses cause many human diseases. They can range from mild to fatal. This activity explains how viruses cause human disease.

[Free Registration/Login may be required to access all resource tools.] Tutorial covers the 1918 Spanish Flu pandemic as a vehicle to look at viruses and disease, as well as the use of modern biological tools to improve human health....

[Free Registration/Login may be required to access all resource tools.] Students will calculate the concentration of solutions in units of molarity, and use molarity to calculate the dilutions of solutions.

[Free Registration/Login may be required to access all resource tools.] Students write net ionic equations for double-replacement reactions that produce precipitates, gases, or molecular compounds, write net ionic equations for...

[Free Registration/Login may be required to access all resource tools.] Students distinguish between types of solutions such as electrolytes and nonelectrolytes and unsaturated, saturated, and supersaturated solutions.

[Free Registration/Login may be required to access all resource tools.] Students describe how the elementary steps of a chemical reaction combine to produce the overall reaction mechanism, and identify intermediates and catalysts when...

[Free Registration/Login may be required to access all resource tools.] Students write the solubility product constant expressions for nearly insoluble ionic compounds and perform calculations for compounds and solubility.

[Free Registration/Login may be required to access all resource tools.] Using the law of conservation of energy as a starting off point, students use the specific heat equation to perform calculations that relate mass, specific heat,...

[Free Registration/Login may be required to access all resource tools.] Students will use Hess's law of heat summation to add chemical reactions together to produce a desired final equation, and then calculate the enthalpy change for...

[Free Registration/Login may be required to access all resource tools.] In this module, students will understand how radioactivity involves a change in the nucleus of a radioisotope and calculate the conversion of mass to energy...