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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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

Teaching Tools and Strategies

2540

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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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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

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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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3091

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356

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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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459

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37

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Adapting a Traditional Laboratory Exercise to Become Inquiry Based: An Example With an Introductory Biology Lab in Diffusion

Authentic research experiences are effective in fostering self-efficacy and increasing retention in STEM, particularly among minoritized student populations. Many instructors have sought to bring these to a wide range of students in the form of...

Courses: Introductory Biology Science Process Skills

protocolquestionDiffusionVariableshypothesisscience processcontrolscientific efficacy

Teaching Tools and Strategies

1735

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325

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SCIENCE/Fiction: Modular Template for Class Design

We present a modular scaffold for designing an introductory seminar using speculative fiction and science papers to welcome university undergraduates to the biology major. A list of twelve possible topics is included, such as Memory, Parasites,...

Courses: Anatomy-Physiology Biochemistry and Molecular Biology Cell Biology Evolution Genetics Introductory Biology Neurobiology

geneticscell biologyneurosciencesystems biologyScience Fiction

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6246

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554

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Meiosis Remodeled: Inclusion of New Parts to Poppit Bead Models Enhances Understanding of Meiosis

A long-standing tradition uses strings of poppit beads of different colors to model meiosis, especially to show how segments of paired homologous chromosomes are recombined. Our use of orthodontic latex bands to model cohesion of sister...

Courses: Cell Biology Genetics Introductory Biology

meiosischiasma formationchromosome recombination