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Articles 1 - 30 of 34
Full-Text Articles in Biology
Laboratory Studies In Animal Diversity, Lee Kats, Cleveland Hickman, Susan Keen
Laboratory Studies In Animal Diversity, Lee Kats, Cleveland Hickman, Susan Keen
Lee Kats
Laboratory Studies in Animal Diversity offers students hands-on experience in learning about the diversity of life. It provides students the opportunity to become acquainted with the principal groups of animals and to recognize the unique anatomical features that characterize each group as well as the patterns that link animal groups to each other.
Hands-On Labs (Hol): Using Technology And Web-Based Resources To Transform A Traditional Lab-Based Biology Course Into A Distance Learning (Dl) Hybrid Course, Across Schools At Pace University., Erica Kipp
Cornerstone 3 Reports : Interdisciplinary Informatics
No abstract provided.
Lifelines Fall 2011, Southern Adventist University
Lifelines Fall 2011, Southern Adventist University
Lifelines - Biology Department Newsletter
The Fall 2011 issue of Lifelines features articles on biology student research, the pre-professional campout, and new professors Dr. Timothy Trott and Dr. Lucinda Hill.
Mathematical Modeling And Dynamical Analysis Of The Operation Of The Hypothalamus - Pituitary - Thyroid (Hpt) Axis In Autoimmune (Hashimoto's) Thyroiditis, Balamurugan Pandiyan
Mathematical Modeling And Dynamical Analysis Of The Operation Of The Hypothalamus - Pituitary - Thyroid (Hpt) Axis In Autoimmune (Hashimoto's) Thyroiditis, Balamurugan Pandiyan
Dissertations (1934 -)
This thesis is a mathematical modeling study of the operation of the negative feedback control through the hypothalamus-pituitary- thyroid (HPT) axis in autoimmune (Hashimoto's) thyroiditis. Negative feedback control through the HPT axis is a mechanism in which the high levels of thyroid hormone; free thyroxine (FT4) in the blood inhibits the secretion of the pituitary hormone, thyroid stimulating hormone (TSH) into the blood. Similarly, the low levels of free thyroxine (FT4) sensed by the pituitary gland and then it secretes thyroid stimulating hormone (TSH) into the blood. Autoimmune (Hashimoto's) thyroiditis is a disease in which the immune system turns against …
Yeast Bax Inhibitor, Bxi1p, Is An Er-Localized Protein That Links The Unfolded Protein Response And Programmed Cell Death In Saccharomyces Cerevisiae, Nicanor Austriaco, James Cebulski, Joshua Malouin, Nathan Pinches, Vincent Cascio
Yeast Bax Inhibitor, Bxi1p, Is An Er-Localized Protein That Links The Unfolded Protein Response And Programmed Cell Death In Saccharomyces Cerevisiae, Nicanor Austriaco, James Cebulski, Joshua Malouin, Nathan Pinches, Vincent Cascio
Biology Faculty Publications
Bax inhibitor-1 (BI-1) is an anti-apoptotic gene whose expression is upregulated in a wide range of human cancers. Studies in both mammalian and plant cells suggest that the BI-1 protein resides in the endoplasmic reticulum and is involved in the unfolded protein response (UPR) that is triggered by ER stress. It is thought to act via a mechanism involving altered calcium dynamics. In this paper, we provide evidence that the Saccharomyces cerevisiae protein encoded by the open reading frame, YNL305C, is a bona fide homolog for BI-1. First, we confirm that yeast cells from two different strain backgrounds lacking YNL305C, …
Investigating The Role Of P53 In The Germ Cell Apoptotic Pathway, Jamie Lamkin
Investigating The Role Of P53 In The Germ Cell Apoptotic Pathway, Jamie Lamkin
Master's Theses, Dissertations, Graduate Research and Major Papers Overview
Investigation of the role of p53 in germ cell apoptosis pathways.
Eugenics And Modern Biology: Critiques Of Eugenics, 1910-1945, Garland E. Allen
Eugenics And Modern Biology: Critiques Of Eugenics, 1910-1945, Garland E. Allen
Biology Faculty Publications & Presentations
Eugenics in most western countries in the first four decades of the twentieth century was based on the idea that genes control most human phenotypic traits, everything from physical features such as polydactyly and eye color to physiological conditions such as the A-B-O blood groups to mental and personality traits such as “feeblemindedness”, alcoholism and pauperism. It assessing the development of the eugenics movement – its rise and decline between 1900 and 1950 – it is important to recognize that its naïve assumptions and often flawed methodologies were openly criticized at the time by scientists and non-scientists alike. This paper …
Curricular Reform And Inquiry Teaching In Biology: Where Are Our Efforts Most Fruitfully Invested, Briana Timmerman, Denise Strickland, Susan Carstensen
Curricular Reform And Inquiry Teaching In Biology: Where Are Our Efforts Most Fruitfully Invested, Briana Timmerman, Denise Strickland, Susan Carstensen
Briana Eileen Timmerman
No abstract provided.
The Interplay Of Host Morphology And Symbiont Microhabitat In Coral Aggregations, B. Helmuth, Briana Timmerman, K. Sebens
The Interplay Of Host Morphology And Symbiont Microhabitat In Coral Aggregations, B. Helmuth, Briana Timmerman, K. Sebens
Briana Eileen Timmerman
No abstract provided.
Peer Review In An Undergraduate Biology Curriculum: Effects On Students’ Scientific Reasoning, Writing And Attitudes, Briana Timmerman
Peer Review In An Undergraduate Biology Curriculum: Effects On Students’ Scientific Reasoning, Writing And Attitudes, Briana Timmerman
Briana Eileen Timmerman
Scientific reasoning and writing skills are ubiquitous processes in science and therefore common goals of science curricula, particularly in higher education. Providing the individualized feedback necessary for the development of these skills is often costly in terms of faculty time, particularly in large science courses common at research universities. Past educational research literature suggests that the use of peer review may accelerate students’ scientific reasoning skills without a concurrent demand on faculty time per student. Peer review contains many elements of effective pedagogy such as peer-peer collaboration, repeated practice at evaluation and critical thinking, formative feedback, multiple contrasting examples, and …
Total Cadmium, Copper And Zinc In Two Dreissenid Mussels, Dreissena Polymorpha And Dreissena Bugensis, At The Outflow Of Lake Ontario, Carolyn Johns, Briana Timmerman
Total Cadmium, Copper And Zinc In Two Dreissenid Mussels, Dreissena Polymorpha And Dreissena Bugensis, At The Outflow Of Lake Ontario, Carolyn Johns, Briana Timmerman
Briana Eileen Timmerman
No abstract provided.
Ufd2a Isoforms With Vsp/P97 And Its Ibmpfd Mutants, Amanda St. Germain
Ufd2a Isoforms With Vsp/P97 And Its Ibmpfd Mutants, Amanda St. Germain
Honors Projects
Using the Yeast2Hybrid system, the binding affinities between Ufd2a variants and VCP/p97 mutants were analyzed. Several VCP/p97 mutants are associated with Inclusion body myositis in association of Paget's disease of the bone and fronto temperal dementia (IMBPFD). It was found that Ufd2a bound strongest to the VCP disease causing mutant A232E. It was also determined that the muscle specific isoform of Ufd2a, Ufd2a III, did not interact with VCP/p97.
Comparative Analysis Of Hepatic And Pulmonary Immune Mediators During Postnatal Development, Michelle Mack
Comparative Analysis Of Hepatic And Pulmonary Immune Mediators During Postnatal Development, Michelle Mack
Seton Hall University Dissertations and Theses (ETDs)
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Trace Metals (Cu, Zn, Cd And Pb) In Juvenile Fish From Estuarine Nurseries Along The Portugese Coast, Rita P. Vasconcelos, Patrick Reis-Santos, Anabela Maia, Miguel Ruano, Maria J. Costa Universidade De Lisboa
Trace Metals (Cu, Zn, Cd And Pb) In Juvenile Fish From Estuarine Nurseries Along The Portugese Coast, Rita P. Vasconcelos, Patrick Reis-Santos, Anabela Maia, Miguel Ruano, Maria J. Costa Universidade De Lisboa
Faculty Publications
Organic and inorganic pollution can impact organisms directly and affect condition, growth and survival of juvenile fish which use estuaries as nurseries, and thereby affect marine adult populations quantitatively and qualitatively. Trace element contamination (Cu, Zn, Cd, Pb) in juveniles of commercial fish Solea solea, Solea senegalensis, Platichthys flesus, Diplodus vulgaris and Dicentrarchus labrax collected in putative nurseries of the main Portuguese estuaries (with diverse intensities and sources of anthropogenic pressures) was determined via atomic absorption spectrometry. Contamination was significantly different among species. Similar levels of contamination were found among estuaries, except for D. vulgaris. Cu and Zn concentrations …
A Synthesis Of Plant Invasion Effects On Biodiversity Across Spatial Scales, Kristin I. Powell, Jonathan M. Chase, Tiffany M. Knight
A Synthesis Of Plant Invasion Effects On Biodiversity Across Spatial Scales, Kristin I. Powell, Jonathan M. Chase, Tiffany M. Knight
Biology Faculty Publications & Presentations
PREMISE OF THE STUDY:
Invasive plant species are typically thought to pose a large threat to native biodiversity, and local-scale studies typically confirm this view. However, plant invaders rarely cause regional extirpations or global extinctions, causing some to suggest that invasive species' influence on native biodiversity may not be so dire. We aim to synthesize the seemingly conflicting literature in plant invasion biology by evaluating the effects of invasive plant species across spatial scales.
METHODS:
We first conducted a meta-analysis on the effects of invasive plants on the species richness of invaded communities across a range of spatial extents. We …
Loading Mechanics Of The Femur In Tiger Salamanders (Ambystoma Tigrinum) During Terrestrial Locomotion, K. Megan Sheffield, Richard W. Blob
Loading Mechanics Of The Femur In Tiger Salamanders (Ambystoma Tigrinum) During Terrestrial Locomotion, K. Megan Sheffield, Richard W. Blob
Academic Services Faculty and Staff Publications
Salamanders are often used as representatives of the basal tetrapod body plan in functional studies, but little is known about the loads experienced by their limb bones during locomotion. Although salamanders’ slow walking speeds might lead to low locomotor forces and limb bone stresses similar to those of non-avian reptiles, their highly sprawled posture combined with relatively small limb bones could produce elevated limb bone stresses closer to those of avian and mammalian species. This study evaluates the loads on the femur of the tiger salamander (Ambystoma tigrinum) during terrestrial locomotion using three- dimensional measurements of the ground reaction force …
Hands-On Labs (Hol): Using Technology And Web-Based Resources To Transform A Traditional Lab-Based Biology Course Into A Distance Learning (Dl) Hybrid Course, Across Schools At Pace University., Erica Kipp
Cornerstone 3 Reports : Interdisciplinary Informatics
No abstract provided.
Quantitatively Measuring In Situ Flows Using A Self-Contained Underwater Velocimetry Apparatus (Scuva), Kakani Katija, Sean Colin, John H. Costello, John O. Dabiri
Quantitatively Measuring In Situ Flows Using A Self-Contained Underwater Velocimetry Apparatus (Scuva), Kakani Katija, Sean Colin, John H. Costello, John O. Dabiri
Arts & Sciences Faculty Publications
The ability to directly measure velocity fields in a fluid environment is necessary to provide empirical data for studies in fields as diverse as oceanography, ecology, biology, and fluid mechanics. Field measurements introduce practical challenges such as environmental conditions, animal availability, and the need for field-compatible measurement techniques. To avoid these challenges, scientists typically use controlled laboratory environments to study animal-fluid interactions. However, it is reasonable to question whether one can extrapolate natural behavior (i.e., that which occurs in the field) from laboratory measurements. Therefore, in situ quantitative flow measurements are needed to accurately describe animal swimming in their natural …
Lifelines Winter 2011, Southern Adventist University
Lifelines Winter 2011, Southern Adventist University
Lifelines - Biology Department Newsletter
The Winter 2011 issue of Lifelines includes articles on research done by the Ecology class, an alumni feature, the TriBeta National Biological Honor Society, and a pictorial directory of the 2011 biology and allied health graduates.
Stress-Induced Proteolysis Of Fkbp10: Mutational Analysis And Functional Implications, Lindsey A. Murphy
Stress-Induced Proteolysis Of Fkbp10: Mutational Analysis And Functional Implications, Lindsey A. Murphy
Featured Research
Cellular signaling is a complex system of communication that regulates cell function through a variety of molecular messengers. When cell survival is threatened by changes in environment or by malfunction of internal regulatory pathways, signals are initiated to restore homeostasis. Deficient protein processing within the endoplasmic reticulum (ER) causes an accumulation of misfolded proteins and stress signaling. The resulting stress signaling includes both adaptive signals (unfolded protein response) and in cases of severe ER stress apoptotic signals induced via the mitochondria. FKBP10 is a key ER luminal peptidy-prolyl isomerase (rotamase) that mediates protein folding. The production of chaperone proteins and …
Nutritional Properties Of The Invasive Lionfish: A Delicious And Nutritious Approach For Controlling The Invasion, James A. Morris, Jr., Amber Thomas, Andrew L. Rhyne, Nancy Breen, Lad Akins, Barry Nash
Nutritional Properties Of The Invasive Lionfish: A Delicious And Nutritious Approach For Controlling The Invasion, James A. Morris, Jr., Amber Thomas, Andrew L. Rhyne, Nancy Breen, Lad Akins, Barry Nash
Arts & Sciences Faculty Publications
Lionfish, Pterois volitans and P. miles, are native to the Indo-Pacific and have recently invaded the Western Atlantic Ocean. Strategies for control of this invasion have included limited removal programs and promotion of lionfish consumption at both local and commercial scales. We demonstrate that lionfish meat contains higher levels of healthy n-3 fatty acids than some frequently consumed native marine fish species. Mean lionfish fillet yield was 30.5% of the total body wet weight, a value that is similar to that of some grouper and porgy species. A sensory evaluation indicated that lionfish meet the acceptability threshold of most consumers.
On The Utility Of Population Models For Invasive Plant Management: Response To Evans And Davis, Eleanor A. Pardini, John M. Drake, Tiffany M. Knight
On The Utility Of Population Models For Invasive Plant Management: Response To Evans And Davis, Eleanor A. Pardini, John M. Drake, Tiffany M. Knight
Biology Faculty Publications & Presentations
No abstract provided.
Will The Use Of Less Fecund Cultivars Reduce The Invasiveness Of Perennial Plants?, Tiffany M. Knight, Kayri Havens, Pati Vitt
Will The Use Of Less Fecund Cultivars Reduce The Invasiveness Of Perennial Plants?, Tiffany M. Knight, Kayri Havens, Pati Vitt
Biology Faculty Publications & Presentations
Many invasive species were originally introduced for horticultural purposes, and several continue to be profitable for the green (nursery, horticulture, and landscape) industry. Recently, some plant suppliers have marketed less fecund cultivars of several invasive species, including glossy buckthorn (Frangula alnus), burning bush (Euonymus alatus), and Japanese barberry (Berberis thunbergii), as “safe” alternatives to invasive relatives. We use published matrix population models to simulate the effect of reducing fecundity on the population growth rates of invasive species. We show that large changes in fecundity result in relatively small changes to the population growth rates of long-lived species, which suggests that …
Society For The Advancement Of Biology Education Research (Saber), Erika G. Offerdahl, Teri Balser, Clarissa Dirks, Kathryn Miller, Jennifer L. Momsen, Lisa Montplaisir, Marcy Osgood, Karen Sirum, Mary Pat Wenderoth, Brian White, William B. Wood, Michelle Withers, Robin Wright
Society For The Advancement Of Biology Education Research (Saber), Erika G. Offerdahl, Teri Balser, Clarissa Dirks, Kathryn Miller, Jennifer L. Momsen, Lisa Montplaisir, Marcy Osgood, Karen Sirum, Mary Pat Wenderoth, Brian White, William B. Wood, Michelle Withers, Robin Wright
Biology Faculty Publications & Presentations
No abstract provided.
Myosin Vi Regulates Actin Structure Specialization Through Conserved Cargo-Binding Domain Sites, Mamiko Isaji, Marta Lenartowska, Tatsuhiko Noguchi, Deborah J. Frank, Kathryn G. Miller
Myosin Vi Regulates Actin Structure Specialization Through Conserved Cargo-Binding Domain Sites, Mamiko Isaji, Marta Lenartowska, Tatsuhiko Noguchi, Deborah J. Frank, Kathryn G. Miller
Biology Faculty Publications & Presentations
Actin structures are often stable, remaining unchanged in organization for the lifetime of a differentiated cell. Little is known about stable actin structure formation, organization, or maintenance. During Drosophila spermatid individualization, long-lived actin cones mediate cellular remodeling. Myosin VI is necessary for building the dense meshwork at the cones' fronts. We test several ideas for myosin VI's mechanism of action using domain deletions or site-specific mutations of myosin VI. The head (motor) and globular tail (cargo-binding) domains were both needed for localization at the cone front and dense meshwork formation. Several conserved partner-binding sites in the globular tail previously identified …
Mechanosensitive Channels: What Can They Do And How Do They Do It?, Elizabeth S. Haswell, Rob Phillips, Douglas C. Rees
Mechanosensitive Channels: What Can They Do And How Do They Do It?, Elizabeth S. Haswell, Rob Phillips, Douglas C. Rees
Biology Faculty Publications & Presentations
While mechanobiological processes employ diverse mechanisms, at their heart are force-induced perturbations in the structure and dynamics of molecules capable of triggering subsequent events. Among the best characterized force-sensing systems are bacterial mechanosensitive channels. These channels reflect an intimate coupling of protein conformation with the mechanics of the surrounding membrane; the membrane serves as an adaptable sensor that responds to an input of applied force and converts it into an output signal, interpreted for the cell by mechanosensitive channels. The cell can exploit this information in a number of ways: ensuring cellular viability in the presence of osmotic stress and …
Two Mechanosensitive Channel Homologs Influence Division Ring Placement In Arabidopsis Chloroplasts, Margaret E. Wilson, Gregory S. Jensen, Elizabeth S. Haswell
Two Mechanosensitive Channel Homologs Influence Division Ring Placement In Arabidopsis Chloroplasts, Margaret E. Wilson, Gregory S. Jensen, Elizabeth S. Haswell
Biology Faculty Publications & Presentations
Chloroplasts must divide repeatedly to maintain their population during plant growth and development. A number of proteins required for chloroplast division have been identified, and the functional relationships between them are beginning to be elucidated. In both chloroplasts and bacteria, the future site of division is specified by placement of the Filamentous temperature sensitive Z (FtsZ) ring, and the Min system serves to restrict FtsZ ring formation to mid-chloroplast or mid-cell. How the Min system is regulated in response to environmental and developmental factors is largely unstudied. Here, we investigated the role in chloroplast division played by two Arabidopsis thaliana …
Expression And Characterization Of The Bacterial Mechanosensitive Channel Mscs In Xenopus Laevis Oocytes., Elizabeth S. Haswell, Grigory Maksaev
Expression And Characterization Of The Bacterial Mechanosensitive Channel Mscs In Xenopus Laevis Oocytes., Elizabeth S. Haswell, Grigory Maksaev
Biology Faculty Publications & Presentations
We have successfully expressed and characterized mechanosensitive channel of small conductance (MscS) from Escherichia coli in oocytes of the African clawed frog, Xenopus laevis. MscS expressed in oocytes has the same single-channel conductance and voltage dependence as the channel in its native environment. Two hallmarks of MscS activity, the presence of conducting substates at high potentials and reversible adaptation to a sustained stimulus, are also exhibited by oocyte-expressed MscS. In addition to its ease of use, the oocyte system allows the user to work with relatively large patches, which could be an advantage for the visualization of membrane deformation. …
The Characterization Of Genes Involved In Response To The Phenol Derivative And Xenoestrogen Bisphenol-A In Saccharomyces Cerevisiae, Sasha N. Farina
The Characterization Of Genes Involved In Response To The Phenol Derivative And Xenoestrogen Bisphenol-A In Saccharomyces Cerevisiae, Sasha N. Farina
CMC Senior Theses
Bisphenol A is an estrogenic compound that is found in polycarbonate plastics and epoxy resins; humans are continuously exposed to the compound and it is believed to possess the same carcinogenic effects as estrogen (Iso, 2006). In this study, I used Saccharomyces cerevisiae as a model organism to identify mechanisms by which BPA acts based on the genomic profiling of kinase genes from a Mat-α haploid deletion library. Kinases regulate many other proteins, so the identification of a single mutant could identify an entire affected pathway of genes. I conducted a systematic screen of these mutants using the phenotype of …
Locomotor Loading Mechanics In The Hindlimbs Of Tegu Lizards (Tupinambis Merianae): Comparative And Evolutionary Implications, K. Megan Sheffield, Michael T. Butcher, S. Katharine Shugart, Jennifer C. Gander, Richard W. Blob
Locomotor Loading Mechanics In The Hindlimbs Of Tegu Lizards (Tupinambis Merianae): Comparative And Evolutionary Implications, K. Megan Sheffield, Michael T. Butcher, S. Katharine Shugart, Jennifer C. Gander, Richard W. Blob
Academic Services Faculty and Staff Publications
Skeletal elements are usually able to withstand several times their usual load before they yield, and this ratio is known as the bone’s safety factor. Limited studies on amphibians and non-avian reptiles have shown that they have much higher limb bone safety factors than birds and mammals. It has been hypothesized that this difference is related to the difference in posture between upright birds and mammals and sprawling ectotherms; however, limb bone loading data from a wider range of sprawling species are needed in order to determine whether the higher safety factors seen in amphibians and non-avian reptiles are ancestral …