CourseSource: Resources

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The Leaky Neuron: Understanding synaptic integration using an analogy involving leaky cups

Students have difficulty understanding synaptic integration in neural circuits, and how spatial and temporal summation combine in a target neuron to reach threshold. This Lesson uses small cups of water to represent excitatory postsynaptic...

Courses: Neurobiology

neuron physiologyspatial summationsynaptic integrationtemporal summationthreshold

Lesson

2050

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516

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A Simple Method for Predicting a Molecule's Biological Properties From Its Polarity

The distinction between very polar and less polar substances is a foundation of biochemistry, cell biology, and physiology; it surfaces in multiple concept inventories and elaborations of biological core concepts. However, in our experience, most...

Courses: Anatomy-Physiology Biochemistry and Molecular Biology Cell Biology Introductory Biology

Diffusionsolubilitycovalent bondshydrophilichydrophobicpartition coefficientplasma membranepolarity

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1325

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183

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Teaching the Photoelectric Effect Using an Open-Source Interactive Simulation

The photoelectric effect is one of the fundamental experiments that established the basis of quantum mechanics. Students studying this experiment in modern physics courses struggle to understand what it actually measured and why it is significant....

Courses: Introductory Physics: Calculus-Based

photoelectric effectquantum mechanicsquantalight-matter interactions

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2981

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349

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Serotonin in the Pocket: Non-covalent interactions and neurotransmitter binding

This lesson introduces beginning biochemistry students to the concept of a biomolecule binding site, such as a neurotransmitter receptor site or an enzyme active site. A simple organic molecule, the neurotransmitter serotonin, is the focus of the...

Courses: Biochemistry and Molecular Biology

active sitebindingbinding sitehydrogen bondinghydrophobic effectionic interactionsnon-covalent forces

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1677

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393

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Taking the Hassle out of Hasselbalch

Mention pH in a classroom and you can almost see the inner yawn on the faces of your students. The definition may even roll easily from their lips. However, despite multiple exposures to the relationship of pH and pKa throughout a typical...

Courses: Biochemistry and Molecular Biology Science Process Skills

pHdrug uptakeHenderson-Hasslbalch equationmedical applicationspKa

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2918

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362

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Bacteria to Brains in Backyard Coyotes: An Interdisciplinary Pedagogical Case Study

Our interdisciplinary pedagogical case study explores the differences between rural and urban coyotes at the levels of organismal and community ecology. The focus is on how coyotes’ gut microbiomes could affect their behavior via...

Courses: Cell Biology Ecology Ecology Evolution Immunology Introductory Biology Microbiology

dietanimal behaviorimmune systemmicrobiomeNervous systemgut-brain axisImmunoReachdysbiosisCoyoteCytokines

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1597

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344

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Investigating Gene Expression and Cell Specialization in Axolotl Embryos

The process of cell specialization is critical to the formation and function of tissues in animals and plants. Although gene expression, including the regulation of transcription, is taught in most introductory cell biology courses, the...

Courses: Biochemistry and Molecular Biology Cell Biology Developmental Biology Science Process Skills

developmenttranscriptiongene expressionmodel organismembryo

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1345

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Glycolysis Can Be Fun: Rediscovering Glycolysis as a Problem-Solving Introduction to Metabolism

A thorough understanding of glycolysis forms a foundation for students to analyze subsequent topics in metabolism, a core competency recognized by multiple national societies for biology and biochemistry. However, when confronted with the names of...

Courses: Biochemistry and Molecular Biology Cell Biology