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Introductory Biology

  • Modeling the Research Process: Authentic human physiology research in a large non-majors course

    Learning Objectives
    Students will be able to:
    • Read current scientific literature
    • Formulate testable hypotheses
    • Design an experimental procedure to test their hypothesis
    • Make scientific observations
    • Analyze and interpret data
    • Communicate results visually and orally
  • In small groups students brainstorm a list of responses to the prompt and then exchange their lists with another group to circle sex characteristics and star gender characteristics.  The image has whiteboards completed by students.

    Sex and gender: What does it mean to be female or male?

    Learning Objectives
    • Students will be able to distinguish between sex and gender, and apply each term appropriately.
    • Students will be able to compare and contrast levels of sexual determination.
    • Students will be able to critique societal misrepresentations surrounding sex, gender, and gender identity.
  • This collage contains original images taken by the course instructor. The images show a microscopic view of stomata on the underside of a Brassica rapa leaf (A), B. rapa plants in their growth trays (B), a flowering B. rapa plant (C), and different concentrations of foliar protein (D). Photos edited via Microsoft Windows Photo Editor and Phototastic Collage Maker.

    A flexible, multi-week approach to plant biology - How will plants respond to higher levels of CO2?

    Learning Objectives
    Students will be able to:
    • Apply findings from each week's lesson to make predictions and informed hypotheses about the next week's lesson.
    • Keep a detailed laboratory notebook.
    • Write and peer-edit the sections of a scientific paper, and collaboratively write an entire lab report in the form of a scientific research paper.
    • Search for, find, and read scientific research papers.
    • Work together as a team to conduct experiments.
    • Connect findings and ideas from each week's lesson to get a broader understanding of how plants will respond to higher levels of CO2 (e.g., stomatal density, photosynthetic/respiratory rates, foliar protein concentrations, growth, and resource allocation).
    Note: Additional, more specific objectives are included with each of the four lessons (Supporting Files S1-S4)
  • Hydrozoan polyps on a hermit-crab shell (photo by Tiffany Galush)

    A new approach to course-based research using a hermit crab-hydrozoan symbiosis

    Learning Objectives
    Students will be able to:
    • define different types of symbiotic interactions, with specific examples.
    • summarize and critically evaluate contemporary primary literature relevant to ecological symbioses, in particular that between hermit crabs and Hydractinia spp.
    • articulate a question, based on observations of a natural phenomenon (in this example, the hermit crab-Hydractinia interaction).
    • articulate a testable hypothesis, based on their own observations and read of the literature.
    • design appropriate experimental or observational studies to address their hypotheses.
    • collect and interpret data in light of their hypotheses.
    • problem-solve and troubleshoot issues that arise during their experiment.
    • communicate scientific results, both orally and in written form.
  • Bacteria growing on petri dish

    You and Your Oral Microflora: Introducing non-biology majors to their “forgotten organ”

    Learning Objectives
    Students will be able to:
    • Explain both beneficial and detrimental roles of microbes in human health.
    • Compare and contrast DNA replication as it occurs inside a cell versus in a test tube
    • Identify an unknown sequence of DNA by performing a BLAST search
    • Navigate sources of scientific information to assess the accuracy of their experimental techniques
  • Sodium-Potassium pump

    Lights, Camera, Acting Transport! Using role-play to teach membrane transport

    Learning Objectives
    At the end of this activity, students should be able to:
    • Compare and contrast the mechanisms of simple diffusion, facilitated diffusion, and active transport (both primary and secondary).
    • Identify, and provide a rationale for, the mechanism(s) by which various substances cross the plasma membrane.
    • Describe the steps involved in the transport of ions by the Na+/K+ pump, and explain the importance of electrogenic pumps to the generation and maintenance of membrane potentials.
    • Explain the function of electrochemical gradients as potential energy sources specifically used in secondary active transport.
    • Relate each molecule or ion transported by the Na+/glucose cotransporter (SGLT1) to its own concentration or electrochemical gradient, and describe which molecules travel with and against these gradients.