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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...
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    2982

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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...
    Lesson
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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...
    Lesson
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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...
    Lesson
    3098

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    358

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    Discovering Cellular Respiration with Computational Modeling and Simulations
    Cellular respiration, a common topic among introductory and cellular biology curricula, is a complex biological process that exemplifies core biological concepts, including systems, pathways and transformation of energy, and structure and function...
    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: GeneticsGenetics

    Lesson
    4291

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    866

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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...
    Lesson
    1882

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    639

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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...
    Lesson
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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...
    Lesson
    2050

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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...
    Lesson
    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...
    Lesson
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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...
    Lesson
    1221

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    556

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    Understanding Gastric Acid Secretion: An Active Learning Approach
    The human digestive system is a diverse network of cells, tissues, and organs that is regulated by systemic (e.g., nervous and endocrine systems) and local factors (e.g., secretions, pH, and the microbiome). Given the volume of content and the...
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    Breaking It Down: What Factors Control Microbial Decomposition Rates?
    Demonstrating and modeling changes in ecosystem processes in the laboratory classroom can be logistically difficult and expensive. This complexity often leaves little time for students to generate and test hypotheses. Yet, we must foster student...
    Lesson
    2816

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    682

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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...
    Lesson
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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...
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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...