CourseSource: Resources

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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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2821

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Unwrapping Enzyme Kinetics

Enzyme rates and kinetics are key components used by biochemists to understand how enzymes function. However, students often find it difficult to understand how these experiments are performed and how they reflect enzyme behavior in solution. The...

Courses: Biochemistry and Molecular Biology

kineticsstructure-functionenzymescatalysis

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Breaking Bricks: A Hands-On Model of Enzyme Kinetics and Inhibition

Enzyme kinetics and the impacts of inhibitors on the enzyme's maximal velocity and ability to bind substrates are important topics in cell biology and biochemistry. However, these topics can be difficult for students to grasp when instructed...

Courses: Biochemistry and Molecular Biology Cell Biology

kineticsEnzymecompetitive inhibition

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3023

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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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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

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4974

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The Avocado Lab: An Inquiry-Driven Exploration of an Enzymatic Browning Reaction

Typical biochemistry labs exploring basic enzyme activity rely on costly, time-consuming protein purification and rarely explore enzyme function in situ. Further, complex purification procedures leave little room for novelty in experimental...

Courses: Biochemistry and Molecular Biology Introductory Biology

enzymescontrolsenzyme inhibition

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5559

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Cell Signaling Pathways - a Case Study Approach

Signaling and gene expression are fundamental to cell biology and developmental biology. Although these topics are highly interrelated, they typically appear in separate units in a course. We use a series of short problem-based learning exercises...

Courses: Cell Biology Developmental Biology

signal transductiongene expressionCell communicationgenetic disordersregulation of enzyme activity

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4239

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Discovering Prokaryotic Gene Regulation with Simulations of the trp Operon

The trp operon exemplifies important biological concepts, including the central dogma of molecular biology, feedback inhibition, and gene regulation. For this reason, regulation of the trp operon is a common theme in introductory biology,...

Courses: Genetics Introductory Biology Microbiology

prokaryotesgene regulationattenuationfeedback inhibitionrepressible operontrp operon

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Discovering Prokaryotic Gene Regulation by Building and Investigating a Computational Model of the lac Operon

The ability to construct and reason through a biological system is an important skill to develop in science education. This level of understanding forces students to recognize the interrelatedness of components within a biological process and...

Courses: Introductory Biology

prokaryotesgene regulationLac Operoninducible operon

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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...

Courses: Anatomy-Physiology

diseasesignal transductionAcid SecretionAutonomic Nervous SystemEndocrineGastric PhysiologyGPCRHistology of Gastric Pit

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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...

Courses: Introductory Biology

Cellular MechanismsCellular RespirationFermentation

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1685

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394

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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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From Dirt to Streptomyces DNA

The purpose of this semester-long Lesson is to give students an authentic, course-based undergraduate research experience during which they learn basic and advanced microbiological and molecular biology techniques. This project begins with the...

Courses: Microbiology

MetabolismAntibiotic productionrRNA genesSecondary metabolitesStreptomyces

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1236

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Mock Drug Activity Enhances Student Learning About the Challenges of HIV/AIDS Therapy

While traditional didactic coursework is important for learning about the scientific aspects of HIV/AIDS, it is difficult to convey social aspects of the epidemic. Due to effective drug therapies, an HIV diagnosis is now considered a chronic...

Courses: Microbiology

drug resistanceRetrovirusViral replication

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2000

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Fly Exercise: A Simple Experiment to Test the Physiological Effects of Exercise on a Model Organism

Model organisms are commonly used to study and experimentally explore biological processes in ways that are technically or ethically not possible in humans. For this reason, model organisms are an essential component of scientific research and...

Courses: Biochemistry and Molecular Biology Introductory Biology Science Process Skills

exerciseenzyme kineticsmetabolite concentrationmodel speciesphysical activity

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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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3043

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A Kinesthetic Modeling Activity to Teach PCR Fundamentals

Most molecular biology and biological sciences students understand that the polymerase chain reaction (PCR) is used to amplify DNA. However, we have found that some students experience conceptual misunderstandings, a lack of detailed comprehension...

Courses: Genetics Science Process Skills

PCR

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Using Bioinformatics and Molecular Visualization to Develop Student Hypotheses in a Malate Dehydrogenase Oriented CURE

Developing student creativity and ability to develop a testable hypothesis represents a significant challenge in most laboratory courses. This lesson demonstrates how students use facets of molecular evolution and bioinformatics approaches...

Courses: Biochemistry and Molecular Biology Bioinformatics Science Process Skills

bioinformaticsNoncovalent InteractionsEnzyme CatalysisProtein Structure/function

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3140

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Targeting Misconceptions in the Central Dogma by Examining Viral Infection

Understanding the central dogma and how changes in gene expression can impact cell function requires integration of several topics in molecular biology. Students often do not make the necessary connections between DNA structure, transcription,...

Courses: Genetics Introductory Biology

datatranscriptionvirustranslationprotein functionmembrane transportPredictions

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4334

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The Great Petunia Carnage of 2017: A Clicker Case Study Using Petunias to Describe the Effect of Genetic Modification on the Biochemistry of Flower Color and Phenotype in Plants

In this single class period case study, students examine the difference between genotype and phenotype by studying the mechanisms by which commercially available petunias have been bred to have different phenotypes (flower colors). Students review...

Courses: Genetics Introductory Biology Plant Biology