CourseSource: Resources

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Electron Location, Location, Location: Understanding Biological Interactions

Introductory Biology courses typically introduce the structure and function of biomolecules such as proteins and nucleic acids. To understand biomolecules fully, students require knowledge of fundamental chemistry concepts such as covalent...

Courses: Biochemistry and Molecular Biology Introductory Biology

hydrogen bondshydrophobicity/hydrophilicitypolar and non-polar covalent bonds

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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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2050

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517

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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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3775

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415

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Using Open-Source Bioinformatics and Visualization Tools to Explore the Structure and Function of SARS-CoV-2 Spike Protein

The relationship between protein structure and function is a foundational concept in undergraduate biochemistry. We find this theme is best presented with assignments that encourage exploration and analysis. Here, we share a series of four...

Courses: Biochemistry and Molecular Biology Bioinformatics Science Process Skills

bioinformaticsmolecular modelingCOVID19protein structure and functionUCSF ChimeraSARS-CoV-2 spike proteinACE2 receptor

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2322

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227

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Sequences and Properties of Gluten Proteins From Different Grains: A Virtual-Friendly Protein Laboratory

The COVID-19 pandemic has forced much university instruction into virtual modes. As a result, many laboratory courses have either dropped content altogether or replaced hands-on activities with simulations and “dry” labs. Our goal was...

Courses: Biochemistry and Molecular Biology Bioinformatics

protein structure and functionProtein sequenceintermolecular forcesBiomacromolecules

Teaching Tools and Strategies

2539

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211

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An Interactive Protocol for In-Classroom DNA Extraction

Using commonly available materials, this tool allows students to extract DNA, exploring DNA chemistry and the principles of experimental design and execution. We take a “Choose Your Own Adventure” approach encouraging students to...

Courses: Biochemistry and Molecular Biology Genetics Introductory Biology

geneticsDNAbiochemical structure and function

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1880

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636

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A Close-Up Look at PCR

The Polymerase Chain Reaction (PCR) is a fundamental laboratory technique that allows for the amplification of many copies of a desired DNA target sequence. Despite its prevalence, undergraduate students often have poor comprehension about the...

Courses: Biochemistry and Molecular Biology Genetics Introductory Biology Science Process Skills

PCRDNA replication

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5648

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1168

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Meiosis: A Play in Three Acts, Starring DNA Sequence

Meiosis is well known for being a sticky topic that appears repeatedly in biology curricula. We observe that a typical undergraduate biology major cannot correctly identify haploid and diploid cells or explain how and why chromosomes pair before...

Courses: Cell Biology Genetics Introductory Biology

recombinationmeiosisDNA sequenceCrossingoverchromosome structureHolliday junctionhomology

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1220

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84

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Responsible and Ethical Conduct of Research: Instruction on Plagiarism

Helping students understand where they should provide citations in research manuscripts is an essential aspect of training them in the responsible and ethical conduct of research. This Lesson comprises about 35 minutes of in-class work to help...

Courses: Science Process Skills

citationwritingethicsplagiarismparaphrasequote

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2813

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680

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The Case of the Missing Strawberries: RFLP analysis

While solving the fictional mystery of the missing strawberries, students are engaged in a guided-inquiry lesson featuring small-group and class discussions, hands-on activities, and laboratory exercises related to molecular genotyping by...

Courses: Genetics Science Process Skills

process of scienceDNAforensicsgel electrophoresisMolecular genotypingRestriction endonucleaseRestriction enzymeRestriction fragment length polymorphismRFLP

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3686

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200

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Three Research-Based Quantitative Reasoning Modules for Introductory Organismal Biology Laboratories

We have designed three laboratory modules for an introductory organismal biology course with an emphasis on quantitative reasoning and data analysis skills. Module 1 tests for dimorphism in crayfish chelae using a paired statistical design. Module...

Courses: Introductory Biology Science Process Skills

allometryplantsAnatomytranspirationdimorphisminvertebrate biologyarthropodsplatyhelminths

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4283

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865

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Exploring the Complexities of Photosynthesis Through a Comic Strip

Photosynthesis is a conceptually challenging topic. The small scale at which photosynthesis takes place makes it difficult for students to visualize what is occurring, and students are often overwhelmed by all of the details of the process. This...

Courses: Introductory Biology Plant Biology

photosynthesislight-dependent reactionsCalvin cyclechloroplast

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5285

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693

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Investigating Enzyme Structure and Function Through Model-Building and Peer Teaching in an Introductory Biology Course

A foundational knowledge of the relationship between structure and function is critical to understanding how enzymes work. The seemingly invisible nature of these molecular interactions makes it challenging for undergraduate students to...

Courses: Biochemistry and Molecular Biology Introductory Biology

structure-functionEnzymeallosteric regulationcompetitive inhibitionfeedback inhibitionnoncompetitive inhibitionproductsubstrate

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3882

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209

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Isolation and Functional Analysis of a Pancreatic Enzyme in an Introductory Student Lab

Structure and function are correlated at all levels of biology. This topic is typically addressed early in an undergraduate class in general or molecular biology before students have gained much skill or knowledge in molecular biology. However, an...

Courses: Biochemistry and Molecular Biology Introductory Biology

Protein StructureproteaseEnzymechemical bondscatalysissolubility

Lesson

2281

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475

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A Lesson on Matter and Energy at the Organismal Scale: Linking Patterns and Processes Across Diverse Taxa

Pathways and transformations of energy and matter (PTEM) are a conceptually challenging but essential component of biological literacy. Curricular gaps about PTEM nevertheless remain; although lessons targeting PTEM at small scales (chemical,...

Courses: Ecology Ecology Introductory Biology

plantsenergyAnimalsfungimatterorganismal scale

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3023

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405

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It's a Substrate... It's a Protein...No - It's an Enzyme! Teaching Using 3D Serine Protease Physical Modeling Activities to Confront Misconceptions.

Reported misconceptions of enzyme-substrate interactions highlight the necessity for better, targeted instructional tools and assessments. A series of active learning activities with corresponding three-dimensional (3D) physical models were...

Courses: Biochemistry and Molecular Biology

Protein StructureEnzymes-Substrate InteractionsNoncovalent InteractionsGeometric ComplementaryElectronicsStereochemistrySerine Proteases

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1681

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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

Teaching Tools and Strategies

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Sanger Sequencing by Hand: Using Paper Clips to Demonstrate Chain Termination

Sanger sequencing is commonly taught with a hands-on approach. Sanger sequencing involves chain termination by dideoxynucleotides, because they are missing the oxygen on the 3’ carbon atom, which is required for the addition of subsequent...

Courses: Genetics

nucleotidessequencingDNAgel electrophoresisChain Termination

Teaching Tools and Strategies

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Lateral Transfer Maps as a Metacognitive Tool in First Year STEM Courses

We introduce the Lateral Transfer Map (LTM), a tool for students to actively and visually explore the transfer of ideas, skills, and concepts across concurrent coursework. The LTM is an extension of a concept map, replacing interconnected concepts...

Courses: Professional Development and Career Planning Science Process Skills

concept mapmetacognitionfirst-year studenttransfer

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980

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122

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My Fish Tank: An Active Learning Activity for Bacterial Nitrogen Metabolism

This active learning activity introduces students to the second part of the nitrogen cycle, nitrification. In terrestrial and aquatic environments, bacteria from the Nitrosomonas and Nitrobacter genera oxidize ammonia first to nitrite (via a...

Courses: Biochemistry and Molecular Biology Ecology Ecology Microbiology