This pathway explores division of cells through mitosis and meiosis and how disregulation of these processes can lead to disease.

This pathway introduces the structure of cell membranes and how they function in cellular transport.

This pathway explores the different types of cells, including eukaryotic, prokaryotic and plant cells, and their structures.

This pathway provides an introduction to cells as the basic unit of life and their structure and function. Prokaryotic, eukaryotic and plant cells are compared and the structure and function of different organelles is discussed. For a deeper look at this topic, we recommend the pathway Cell Structure from the OpenStax textbook Biology for AP® Courses.

This pathway provides an introduction to cellular mechanisms of transport, including a comparison of passive and active mechanisms. For a deeper look at this topic, we recommend the pathway Structure and Function of Plasma Membranes from the OpenStax textbook Biology for AP® Courses.

This pathway explores the processes of transcription and translation that allow cells to produce proteins from DNA.

Este video de laboratorio analiza el propósito del centrifugado en un laboratorio biológico y demuestra dos aplicaciones.

Questo video di laboratorio discute lo scopo della centrifugazione in un laboratorio biologico e ne dimostra due applicazioni.

Why do atoms react with some elements but not others, and why do they form compounds with such different properties? One of the reasons is the bonds that they form. This pathway provides resources relating to the reasons that atoms bond, and the three different types of bonds that form between atoms: covalent, ionic and metallic.

Chemical reactions are the foundation of chemistry, and understanding how elements combine and in what ratios helps us to understand the world around us. This pathway provides resources about how different chemicals react, and the ratios in which they react, a field of study known as Stoichiometry (literally: element measuring).

Clusters give you the tools to explore all your diverse interests. Clusters are groups of pathways, or customized learning journeys, designed to help you see a topic through different lenses. Unlike a traditional course, the cluster provides different thematic grouping of concepts. LabXchange developed sequences, or tours, that help you approach a topic from different perspectives.

This scrollable interactive explores the regulation of the araBAD operon, a set of co-regulated genes that metabolize arabinose in E. coli.

This scrollable introduces the idea of a set of co-regulated genes in prokaryotes, called an operon, using the canonical lac operon as an example.

This scrollable interactive explores the regulation of the trp operon in E. coli, a
set of co-regulated genes that govern synthesis of the amino acid tryptophan.

Cette vidéo explique comment trier de petites molécules à l’aide d’une technique appelée colonne de chromatographie.

This video explains how to sort small molecules using a technique called column chromatography.

In questo video, gli insegnanti Dave e Mary spiegano nel dettaglio come utilizzare una micropipetta e perché questo dispositivo è uno strumento essenziale in laboratorio.

Dans cette vidéo, les professeurs Dave et Mary expliquent comment utiliser une micropipette et les raisons pour lesquelles cet équipement est un outil essentiel en laboratoire.

Nesse vídeo, os professores Dave e Mary explicam como usar uma micropipeta e porque este equipamento é uma ferramenta essencial no laboratório.

This scrollable explains why there are so many inactive ingredients in drug tablets. Not only does the medicine need to be released in a way that is effective, but customer preferences, shelf life and storage considerations must also be taken into account. Exploring the mechanisms of how tablets interact with the body helps explain the important roles of each type of ingredient.