Metabolic Scaling: Exploring the Relation Between Metabolic Rate and Body Size.

We present an alternative to the traditional classroom lecture on the topics of metabolic scaling, allometric relationships between metabolic rate (MR) and body size, and reasons for rejecting Rubner''s surface "law," concepts that students have described as challenging, counterintuitive, and/or mathematical. In groups, students work with published data on MR and body size for species representing all five vertebrate groups. To support the exercise, we developed a worksheet that has students define the concept in their own words, compare different measures of MR, and evaluate plots of MR and mass-specific MR versus body mass for both homeotherms and poikilotherms.

Flipped teaching eased the transition from face-to-face teaching to online instruction during the COVID-19 pandemic.

Due to the COVID-19 pandemic, Rice University canceled classes for the week of March 9-13, 2020 and shifted all instruction to online only following spring break. For the second half of the semester, animal physiology was taught exclusively over Zoom. Here we describe how a flipped teaching format that was used before the pandemic eased the transition from face-to-face teaching to online instruction.

Modular laboratory courses: An alternative to a traditional laboratory program.

Our modular laboratory teaching program is characterized by two major features. First, each course is taught independently and not linked with a particular lecture course. Second, each course is designed to be completed within one-half semester or less.

Control of Drosophila perineurial glial growth by interacting neurotransmitter-mediated signaling pathways.

Drosophila peripheral nerves, similar structurally to the peripheral nerves of mammals, comprise a layer of axons and inner glia, surrounded by an outer perineurial glial layer. Although it is well established that intercellular communication occurs among cells within peripheral nerves, the signaling pathways used and the effects of this signaling on nerve structure and function remain incompletely understood. Here we demonstrate with genetic methods that the Drosophila peripheral nerve is a favorable system for the study of intercellular signaling.

A precise group size in Dictyostelium is generated by a cell-counting factor modulating cell-cell adhesion.

A remarkable aspect of Dictyostelium development is that cells form evenly sized groups of approximately 2 x 10(4) cells. A secreted 450 kDa protein complex called counting factor (CF) regulates the number of cells per group. We find that CF regulates group size by repressing cell-cell adhesion.