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2009

Biology

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Articles 31 - 32 of 32

Full-Text Articles in Life Sciences

Comparison Of Uva Absorbance In Sun And Shade Leaves, James Newton, Kevin Rivera, James Kim Jan 2009

Comparison Of Uva Absorbance In Sun And Shade Leaves, James Newton, Kevin Rivera, James Kim

Featured Research

In observing chaparral species’ resistance to abiotic plant stresses, this investigation sought to study plant defense against UVA radiation in sun and shade leaves. We predicted that sun leaves would have higher absorbance of UV radiation considering their day-long exposure to sunlight.

UVA (350nm-400nm) absorbance in sun and shade leaves of Heteromeles arbutifolia and Malosma laurina were measured using an integrating sphere. Four leaves from each group were surveyed for reflectance and absorbance. Using the spectrophotometer, reflectance in the green wavelengths (500-600nm) was measured and divided by reflectance in the red (600-700nm) to give a quantitative estimation of the redness …


Expression Of Three Novel Alternative Splice Forms Of Ufd2a During Zebrafish Development, Nicole Gadbois Jan 2009

Expression Of Three Novel Alternative Splice Forms Of Ufd2a During Zebrafish Development, Nicole Gadbois

Honors Projects

Ufd2a is a ubiquitylation enzyme that is involved in protein degradation, cell division, and apoptosis signaling. Data has shown that cardiac and skeletal muscle cells of adult rodents and humans express alternatively spliced isoforms of Ufd2a. Ufd2a I (exons 1-6, 8-27) has been found to be expressed in murine myoblasts, but, upon differentiation, myotubes began to express Ufd2a II (includes exon 7), followed by Ufd2a III (includes exon 7a). Since zebrafish are an ideal in vivo model organism, this study examines the spatial-temporal expression patterning of Ufd2a and its isoforms in zebrafish embyros during development.