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Differential Gene Expression during Xenopus laevis DevelopmentLearning ObjectivesStudents will be able to:
- identify different stages of Xenopus development
- contrast the strengths and limitations of the Xenopus model organism
- explain the process and purpose of in situ hybridization
- compare gene expression patterns from different germ layers or organ domains
- compare gene expression patterns from different developmental stages
Taking the Hassle out of HasselbalchLearning ObjectivesStudents will be able to:
- Characterize an aqueous environment as acidic or basic.
- Explain that pKa is a measure of how easy it is to remove a proton from a molecule.
- Predict ionization state of a molecule at a particular pH based on its pKa (qualitative use of the Henderson-Hasselbalch equation).
- Calculate the ratio of protonated/unprotonated forms of ionizable groups depending on chemical characteristics and /or environment pH (quantitative use of the Henderson-Hasselbalch equation).
- Apply this knowledge in a medical context.
Make It Stick: Teaching Gene Targeting with Ribbons and FastenersLearning Objectives
- Students will be able to design targeting constructs.
- Students will be able to predict changes to the gene locus after homologous recombination.
- Students will be able to design experiments to answer a biological question (e.g., "Design an experiment to test if the expression of gene X is necessary for limb development").
Authentic Ecological Inquiries Using BearCam ArchivesLearning ObjectivesStudents will be able to:
- conduct an authentic ecological inquiry including
- generate a testable hypothesis based on observations,
- design investigation with appropriate sampling selection and variables,
- collect and analyze data following the design, and
- interpret results and draw conclusions based on the evidence.
- write a research report with appropriate structure and style.
- evaluate the quality of inquiry reports using a rubric.
- conduct peer review to evaluate and provide feedback to others' work.
- revise the inquiry report based on peer feedback and self-assessment.
- conduct an authentic ecological inquiry including
Using Pathway Maps to Link Concepts, Peer Review, Primary Literature Searches and Data Assessment in Large Enrollment...Learning Objectives
- Define basic concepts and terminology of Ecosystem Ecology
- Link biological processes that affect each other
- Evaluate whether the link causes a positive, negative, or neutral effect
- Find primary literature
- Identify data that correctly supports or refutes an hypothesis
Teaching epidemiology and principles of infectious disease using popular media and the case of Typhoid MaryLearning ObjectivesStudents will be able to:
- Describe the reservoirs of infection in humans.
- Distinguish portals of entry and exit.
- Describe how each of the following contributes to bacterial virulence: adhesins, extracellular enzymes, toxins, and antiphagocytic factors.
- Define and distinguish etiology and epidemiology.
- Describe the five typical stages of infectious disease and depict the stages in graphical form.
- Contrast contact, vehicle and vector transmission, biological and mechanical vectors and identify the mode of transmission in a given scenario.
- Differentiate endemic, sporadic, epidemic, and pandemic disease.
- Distinguish descriptive, analytical, and experimental epidemiology.
- Compare and contrast social, economic, and cultural factors impacting health care in the early 1900s and today.
Priority Setting in Public Health: A lesson in ethics and hard choicesLearning ObjectivesAt the end of this unit, students will be able to:
- Define the central distinction between public health and medicine
- Apply objectives of public health and individual medical care in a particular situation to identify potential areas of conflict in priority setting
- Apply moral theories of utilitarianism and deontology to a particular situation to identify the course of action proponents of each theory would see as morally justified
- Identify the range of morally justifiable actions that might be available to a health professional in a particular setting
- Choose from among a range of possible actions in a particular health situation and articulate the ethical principles that would justify that choice.
Mice, Acorns, and Lyme Disease: a Case Study to Teach the Ecology of Emerging Infectious Diseases.Learning ObjectivesStudents will be able to...
- outline the life cycle of ticks and explain the transmission cycle of Lyme disease.
- describe factors that make mice a competent reservoir for Borrelia burgdorferi.
- analyze and interpret line and bar graphs of data on the effects of changes to ecological communities on the risk of human exposure to Lyme disease.
- explain how the incidence of Lyme disease is determined by interactions between bacteria, animals, humans and the environment.
- predict how changes in the ecosystem affect Borrelia burgdorferi transmission.
- explain how human activities affect biodiversity and the consequences of those actions on disease outbreaks.
Using CRISPR-Cas9 to teach the fundamentals of molecular biology and experimental designLearning ObjectivesModule 1
- Generate a testable hypothesis that requires a creative design of reagents based on critical reading of and review of prior research.
- Demonstrate proficiency in using molecular cloning software to analyze, manipulate and verify DNA sequences.
- Predict the downstream effect on the mRNA and protein after successfully inserting a DNA repair template into the genome of a cell/organism.
- Compare and contrast the processes of DNA duplication and PCR.
- Demonstrate the ability to design primers to amplify a nucleotide sequence.
- Analyze and evaluate the results of DNA agarose gel electrophoresis.
- Identify the key features in genomic DNA, specifically those required for CRISPR-Cas9 mediated gene edits.
- Explain how compatible ends of DNA are used to produce recombinant DNA in a ligation reaction.
- Explain the chemical principles behind plasmid DNA purification from bacterial cultures.
- Devise a strategy to screen clones based on antibiotic selection and the mechanism of digestion by DNA endonucleases.
- Predict and evaluate the results of a diagnostic digest.
- Explain the chemical principles behind DNA purification using phenol-chloroform extraction and ethanol precipitation.
- Explain the key differences between DNA duplication and transcription.
- Demonstrate the ability to perform lab work with sterile technique.
- Compare and contrast the results of a non-denaturing vs. denaturing agarose gel.
- Evaluate the results of a denaturing agarose gel.
- Design and implement an experiment that tests the CRISPR-Cas9 principle.
- Predict the outcome of a successful in vitro Cas9 digest.
- Summarize important background information on gene of interest from analysis of primary literature.
- Produce figures and figure legends that clearly indicate results.
- Organize and construct a poster that clearly and professionally displays the important aspects of the lesson.
- Demonstrate understanding of the lesson by presenting a poster to an audience in lay terms, mid-level terms, or at an expert level.
- Demonstrate understanding of procedures by writing a formal materials and methods paper.
Using Synthetic Biology and pClone Red for Authentic Research on Promoter Function: Genetics (analyzing mutant...Learning Objectives
- Describe how cells can produce proteins at the right time and correct amount.
- Diagram a bacterial promoter with −35 and −10 elements and the transcription start site.
- Describe how mutational analysis can be used to study promoter sequence requirements.
- Develop a promoter mutation hypothesis and design an experiment to test it.
- Successfully and safely manipulate DNA and Escherichia coli for ligation and transformation experiments.
- Design an experiment to verify a mutated promoter has been cloned into a destination vector.
- Design an experiment to measure the strength of a promoter.
- Analyze data showing reporter protein produced and use the data to assess promoter strength.
- Define type IIs restriction enzymes.
- Distinguish between type II and type IIs restriction enzymes.
- Explain how Golden Gate Assembly (GGA) works.
- Measure the relative strength of a promoter compared to a standard promoter.
In-class peer grading of daily quizzes increases feedback opportunitiesLearning ObjectivesEach of these objectives are illustrated with a succinct slide presentation or other supplemental material available ahead of class time through the course administration system. Learners found it particularly helpful to have video clips that remind them of mathematical manipulations available (in the above example objective c). Students understand that foundational objectives tend to be the focus of the quiz (objectives a-d) and that others will be given more time to work on together in class (objectives e-g), but I don't specify this exactly to reduce temptation that 'gamers' take a shortcut that would impact their group work negatively later on. However, the assignment for a focused graded group activity is posted as well, so it is clear what we are working towards; if desired individuals could prepare ahead of the class.
Teaching Genetic Linkage and Recombination through Mapping with Molecular MarkersLearning ObjectivesStudents will be able to:
- Explain how recombination can lead to new combinations of linked alleles.
- Explain how molecular markers (such as microsatellites) can be used to map the location of genes/loci, including what crosses would be informative and why.
- Explain how banding patterns on an electrophoresis gel represent the segregation of alleles during meiosis.
- Predict how recombination frequency between two linked loci affects the genotype frequencies of the products of meiosis compared to loci that are unlinked (or very tightly linked).
- Analyze data from a cross (phenotypes and/or genotypes) to determine if the cross involves linked genes.
- Calculate the map distance between linked genes using data from genetic crosses, such as gel electrophoresis banding patterns.
- Justify conclusions about genetic linkage by describing the information in the data that allows you to determine genes are linked.
Grow the Gradient: An interactive countercurrent multiplier gameLearning Objectives
- Students will be able to simulate the movement of water and sodium at each region of the loop of Henle.
- Students will be able to associate osmosis and active transport with movement of water/solutes at each region of the loop of Henle.
- Students will be able to model how the descending and ascending limbs of the loop of Henle maintain a concentration gradient within the medulla.
- Students will be able to predict the effects of altering normal water and salt movement out of the loop of Henle on the salt concentration of the medulla, urine concentration, and urine volume.
- Students will be able to predict the impact of the length of the loop of Henle on the magnitude of the concentration gradient within the medulla.
- Students will be able to predict the length of the loop of Henle in organisms from different habitats.
Investigating the Function of a Transport Protein: Where is ABCB6 Located in Human Cells?Learning ObjectivesAt the end of this activity students will be able to:
- describe the use of two common research techniques for studying proteins: SDS-PAGE and immunoblot analysis.
- determine a protein’s subcellular location based on results from: 1) immunoblotting after differential centrifugation, and 2) immunofluorescence microscopy.
- analyze protein localization data based on the limitations of differential centrifugation and immunofluorescence microscopy.
Dynamic Daphnia: An inquiry-based research experience in ecology that teaches the scientific process to first-year...Learning ObjectivesStudents will be able to:
- Construct written predictions about 1 factor experiments.
- Interpret simple (2 variables) figures.
- Construct simple (2 variables) figures from data.
- Design simple 1 factor experiments with appropriate controls.
- Demonstrate proper use of standard laboratory items, including a two-stop pipette, stereomicroscope, and laboratory notebook.
- Calculate means and standard deviations.
- Given some scaffolding (instructions), select the correct statistical test for a data set, be able to run a t-test, ANOVA, chi-squared test, and linear regression in Microsoft Excel, and be able to correctly interpret their results.
- Construct and present a scientific poster.
Using Yeast to Make Scientists: A Six-Week Student-Driven Research Project for the Cell Biology LaboratoryLearning Objectives
- Learn about basic S. cerevisiae biology
- Use sterile technique
- Perform a yeast viability assay
- Use a spectrophotometer to measure growth of S. cerevisiae
- Perform a literature search
- Calculate concentrations of chemicals appropriate for S. cerevisiae
- Generate S. cerevisiae growth curves
- Troubleshoot experimental difficulties
- Perform statistical analysis
- Present findings to an audience
Bad Cell Reception? Using a cell part activity to help students appreciate cell biology, with an improved data plan and...Learning Objectives
- Identify cell parts and explain their function
- Explain how defects in a cell part can result in human disease
- Generate thought-provoking questions that expand upon existing knowledge
- Create a hypothesis and plan an experiment to answer a cell part question
- Find and reference relevant cell biology journal articles
Cell Signaling Pathways - a Case Study ApproachLearning Objectives
- Use knowledge of positive and negative regulation of signaling pathways to predict the outcome of genetic modifications or pharmaceutical manipulation.
- From phenotypic data, predict whether a mutation is in a coding or a regulatory region of a gene involved in signaling.
- Use data, combined with knowledge of pathways, to make reasonable predictions about the genetic basis of altered signaling pathways.
- Interpret and use pathway diagrams.
- Synthesize information by applying prior knowledge on gene expression when considering congenital syndromes.
CRISPR/Cas9 in yeast: a multi-week laboratory exercise for undergraduate studentsLearning ObjectivesWeek 1: CRISPR design
- Locate the coding sequence, flanking sequence, protein product, and characteristics of a given gene from the Saccharomyces Genome Database (https://www.yeastgenome.org/).
- Design and defend the design of guide RNA and single stranded template for DNA repair in CRISPR/Cas9 gene editing studies to generate Saccharomyces cerevisiae auxotrophic mutants.
- Describe the qualities of the vector, pML104, that allow replication and selection in bacteria and yeast as well as allow expression of necessary factors in CRISPR/Cas9 genome editing, including Cas9 and sgRNA.
- Describe the rationale of and perform procedures necessary for cloning a small cassette (i.e., sgRNA gene) into a vector (i.e., pML104) including; restriction digest, annealing of DNA strands, removal of 5’ phosphates, ligation, and transformation.
- Recognize and design appropriate controls for cloning procedures such as ligation and transformation.
- Describe the method of polymerase chain reaction (PCR), including the rationale for essential components of a reaction mixture and thermal-cycling conditions.
- Locate the binding sites of and design primers for PCR, then report the expected size of the amplification product.
- Describe and perform isolation of plasmid DNA from E. coli.
- Describe the rationale for and perform procedures to transform yeast, including the essential components of a transformation mixture and conditions necessary for transformation.
- Describe the basic conditions required for cultivating yeast.
- Describe the rationale for and perform agarose gel electrophoresis of a given size of DNA.
- Analyze DNA separated by agarose gel electrophoresis, including size estimation.
- Recognize and describe the qualities of a template for DNA repair that allows efficient DNA repair.
- Design an experiment to determine auxotrophic phenotypes.
- Predict the outcome of multi-step experiments.
- Recognize and describe conditions necessary for growth of E. coli and S. cerevisiae.
- Qualitatively and quantitatively analyze scientific data from scientific experiments, including bacterial and yeast transformation, agarose gel electrophoresis, extraction of plasmid DNA from bacteria, PCR, and auxotroph phenotypic analysis.
- Communicate science to peers through maintenance of a laboratory notebook, verbal communication with group members, and writing of a formal laboratory report written in a format acceptable for journal publication.
- Troubleshoot scientific protocols by identifying procedures that are prone to error, comparing recommended protocols to actual procedure, and using positive and negative controls to narrow the location of a potential error.
- Communicate specific potential or actual uses of CRISPR/Cas9 in science and/or medicine.
- Use various bioinformatics approaches to analyze macromolecular primary sequence and structure.
- Illustrate how DNA is replicated and genes are transmitted from one generation to the next in multiple types of organisms including bacteria, eukaryotes, viruses, and retroviruses.
- Define what a genome consists of and how the information in various genes and other sequence classes within each genome are used to store and express genetic information.
- Explain the meaning of ploidy (haploid, diploid, aneuploid etc.) and how it relates to the number of homologues of each chromosome.
- Predict the effects of mutations on the activity, structure, or stability of a protein and design appropriate experiments to assess the effects of mutations.
- Predict the growth behavior of microbes based on their growth conditions, e.g., temperature, available nutrient, aeration level, etc.
- Discuss the benefits of specific tools of modern biotechnology that are derived from naturally occurring microbes (e.g. cloning vectors, restriction enzymes, Taq polymerase, etc.)
- Accurately prepare and use reagents and perform experiments.
- When presented with an observation, develop a testable and falsifiable hypothesis.
- When provided with a hypothesis, identify the appropriate experimental observations and controllable variables.
Using Place-Based Economically Relevant Organisms to Improve Student Understanding of the Roles of Carbon Dioxide,...Learning ObjectivesAt the end of this lesson, students will be able to:
- Describe the roles of light energy and carbon dioxide in photosynthetic organisms.
- Identify the effect of nutrients on the growth of photosynthetic organisms.
- Describe global cycles in atmospheric carbon dioxide levels and how they relate to photosynthetic organisms.
CURE-all: Large Scale Implementation of Authentic DNA Barcoding Research into First-Year Biology CurriculumLearning ObjectivesStudents will be able to: Week 1-4: Fundamentals of Science and Biology
- List the major processes involved in scientific discovery
- List the different types of scientific studies and which types can establish causation
- Design experiments with appropriate controls
- Create and evaluate phylogenetic trees
- Define taxonomy and phylogeny and explain their relationship to each other
- Explain DNA sequence divergence and how it applies to evolutionary relationships and DNA barcoding
- Define and measure biodiversity and explain its importance
- Catalog organisms using the morphospecies concept
- Geographically map organisms using smartphones and an online mapping program
- Calculate metrics of species diversity using spreadsheet software
- Use spreadsheet software to quantify and graph biodiversity at forest edges vs. interiors
- Write a formal lab report
- Extract, amplify, visualize and sequence DNA using standard molecular techniques (PCR, gel electrophoresis, Sanger sequencing)
- Explain how DNA extraction, PCR, gel electrophoresis, and Sanger sequencing work at the molecular level
- Trim and assemble raw DNA sequence data
- Taxonomically identify DNA sequences isolated from unknown organisms using BLAST
- Visualize sequence data relationships using sequence alignments and gene-based phylogenetic trees
- Map and report data in a publicly available online database
- Share data in a formal scientific poster
An Introduction to Eukaryotic Genome Analysis in Non-model Species for Undergraduates: A tutorial from the Genome...Learning ObjectivesAt the end of the activity, students will be able to:
- Explain the steps involved in genome assembly, annotation, and variant detection to other students and instructors.
- Create meaningful visualizations of their data using the integrated genome viewer.
- Use the Linux command line and web-based tools to answer research questions.
- Produce annotated genomes and call variants from raw sequencing reads in non-model species.