Open Access. Powered by Scholars. Published by Universities.®

Biology Commons

Open Access. Powered by Scholars. Published by Universities.®

25,894 Full-Text Articles 46,696 Authors 2,974,925 Downloads 323 Institutions

All Articles in Biology

Faceted Search

25,894 full-text articles. Page 1 of 891.

Incorporating Worksheets To Enhance Active Learning In A Laboratory Course, Zakiya S. Kelley 2020 Western Michigan University

Incorporating Worksheets To Enhance Active Learning In A Laboratory Course, Zakiya S. Kelley

STEM Instructional Graduate Teaching Assistant Posters

Study Goals:

To create worksheets that would aid the students in properly completing the required experiments and challenge them to do more than just follow the instructions. Each week there were often multiple experiments to be completed and pre-made samples to be observed within the class period. By providing the worksheet, I ensured the students completed all tasks and comprehended the covered material before class ended.

Objectives:

  • To improve student participation and information retention when completing laboratory experiments in the classroom
  • To emphasize key points of the topic being explored


A Tree Frog (Boana Pugnax) Dataset Of Skin Transcriptome For The Identification Of Biomolecules With Potential Antimicrobial Activities, Yamil Liscano Martinez, Claudia Marcela Arenas Gómez, Jeramiah J. Smith, Jean Paul Delgado 2020 Universidad de Antioquia, Colombia

A Tree Frog (Boana Pugnax) Dataset Of Skin Transcriptome For The Identification Of Biomolecules With Potential Antimicrobial Activities, Yamil Liscano Martinez, Claudia Marcela Arenas Gómez, Jeramiah J. Smith, Jean Paul Delgado

Biology Faculty Publications

Increases in the prevalence of multiply resistant microbes have necessitated the search for new molecules with antimicrobial properties. One noteworthy avenue in this search is inspired by the presence of native antimicrobial peptides in the skin of amphibians. Having the second highest diversity of frogs worldwide, Colombian anurans represent an extensive natural reservoir that could be tapped in this search. Among this diversity, species such as Boana pugnax (the Chirique-Flusse Treefrog) are particularly notable, in that they thrive in a diversity of marginal habitats, utilize both aquatic and arboreal habitats, and are members of one of few genera that are ...


Lack Of Consensus On An Aging Biology Paradigm? A Global Survey Reveals An Agreement To Disagree, And The Need For An Interdisciplinary Framework, Alan A. Cohen, Anne M. Bronikowski, Luigi Ferrucci, et al. 2020 University of Sherbrooke

Lack Of Consensus On An Aging Biology Paradigm? A Global Survey Reveals An Agreement To Disagree, And The Need For An Interdisciplinary Framework, Alan A. Cohen, Anne M. Bronikowski, Luigi Ferrucci, Et Al.

Ecology, Evolution and Organismal Biology Publications

At a recent symposium on aging biology, a debate was held as to whether or not we know what biological aging is. Most of the participants were struck not only by the lack of consensus on this core question, but also on many basic tenets of the field. Accordingly, we undertook a systematic survey of our 71 participants on key questions that were raised during the debate and symposium, eliciting 37 responses. The results confirmed the impression from the symposium: there is marked disagreement on the most fundamental questions in the field, and little consensus on anything other than the ...


Ecological Factors Influencing Wild Pig Damage To Planted Pine And Hardwood Seedlings, Micah P. Fern, James B. Armstrong, Rebecca J. Barlow, John S. Kush 2020 Union University

Ecological Factors Influencing Wild Pig Damage To Planted Pine And Hardwood Seedlings, Micah P. Fern, James B. Armstrong, Rebecca J. Barlow, John S. Kush

Human–Wildlife Interactions

Expanding wild pig (Sus scrofa) populations across the southern United States has the potential to impact longleaf pine (Pinus palustris) restoration efforts. The depredation of planted pine seedlings is the most widespread and economically costly damage caused by wild pigs in forest plantations. A better understanding of the ecological factors affecting depredation rates will allow managers to implement best management practices to reduce seedling mortality from wild pigs at their most vulnerable stage of growth. From March 2016 to March 2017, we evaluated wild pig preferences for planted pine and hardwood species at a 34.4-ha cutover site and 4 ...


Ethical Implications Of The Legal Definition Of Brain Death In Light Of Modern Technological Advancements, Jordyn E. Fullaway 2020 Saint Michael's College

Ethical Implications Of The Legal Definition Of Brain Death In Light Of Modern Technological Advancements, Jordyn E. Fullaway

The Macksey Journal

Modern medical advancements in resuscitation and life support shifted the idea of death from a cardio-respiratory view to that of a neurocentric view. As a result, the definition of brain death (BD) emerged, which is the irreversible loss of brain function in both the brainstem and cerebral cortex. Consequentially, guidelines for determining BD were defined under law, and it is now legal to remove a patient from life support if they are diagnosed as brain dead. According to policy, one is considered brain dead if they have no brainstem reflexes, a lack of cerebral blood flow, and an absence of ...


Assessing Vulture Translocation As A Management Tool To Mitigate Airport Bird Strikes, Weber Galvão Novaes, Tarcísio Lyra dos Santos Abreu, Rafael Soave Guerta 2020 Centro de Investigação e Prevenção de Acidentes Aeronáuticos

Assessing Vulture Translocation As A Management Tool To Mitigate Airport Bird Strikes, Weber Galvão Novaes, Tarcísio Lyra Dos Santos Abreu, Rafael Soave Guerta

Human–Wildlife Interactions

Collisions between wildlife and aircraft are a major safety concern for international aviation. In the Americas, vultures (Cathartidae) are considered to be one of the most hazardous bird species to airport operations. In this study, we evaluated the use of translocations as a management technique to reduce vulture abundance near the Manaus International Airport (MAO), Manaus, Brazil. The MAO is one of the busiest and most strategically important airports in South America, often referred to as the gateway to the Brazilian Amazon. We captured, wing-tagged, and translocated 98 vultures between August and October 2013 and between January and April 2014 ...


Three Gastrointestinal Assays, Bailey Majtyka 2020 State University of New York College at Brockport

Three Gastrointestinal Assays, Bailey Majtyka

Senior Honors Theses

Gastrointestinal (GI) functionality relies on the spontaneous, rhythmic and coordinated propagation of muscular contractions in the GI tract, or GI motility. Without these coordinated motor patterns, digestion falters, and results in problems with digestion. Disrupted or un-coordinated motor patterns are associated with altered GI transit times. GI transit is the amount of time necessary for intestinal contents to move through the GI tract. GI transit is measured in patients complaining about abdominal discomfort to determine if discomfort results from a true dysmotility or from idiopathic symptoms. GI transit assays help to determine appropriate treatments but idiopathic symptoms, or pain from ...


An Investigation Into The Role Of Arf6 In Mch-Mediated Rearrangements In 3t3-L1 Preadipocytes, Bohdan Smich 2020 State University of New York College at Brockport

An Investigation Into The Role Of Arf6 In Mch-Mediated Rearrangements In 3t3-L1 Preadipocytes, Bohdan Smich

Senior Honors Theses

Obesity has become a pandemic in our society. One potential method to alleviate this crisis is the use of pharmaceutical therapy to manage how our bodies metabolize the energy that we consume. Chronic overconsumption can lead to the activation of inflammatory responses and metabolic dysregulation, such as insulin resistance, and promote the obese condition. The pathways involved in the motility of pre-adipocyte cells are important in understanding how our bodies interpret and react to specific biochemical signals. This research is focused on a pathway that activates the expansion and migration of pre-adipocytes. Melanin-concentrating Hormone (MCH) is a neuropeptide that is ...


Regulation Of Innate Immunity In The C. Elegans Intestine By Olfactory Neurons, Kyle J. Foster 2020 University of Massachusetts Medical School

Regulation Of Innate Immunity In The C. Elegans Intestine By Olfactory Neurons, Kyle J. Foster

GSBS Dissertations and Theses

The intestinal epithelium represents one of the first lines of defense against pathogenic bacteria. Immune regulation at this critical barrier is necessary to maintain organismal fitness, and mis-regulation here has been linked to numerous debilitating diseases. Functional relationships between the nervous system and immune system have been found to be critical in the proper coordination of immune defenses at barrier surfaces, however the precise mechanisms underlying theses interactions remains unclear.

Through conducting a forward genetic screen utilizing the model organism Caenorhabditis elegans, we uncovered a surprising requirement for the olfactory neuron gene olrn-1 in the regulation of intestinal epithelial immunity ...


The Influence Of The Cellular Environment On Z-Dna Formation, Amanda Hange 2020 State University of New York College at Brockport

The Influence Of The Cellular Environment On Z-Dna Formation, Amanda Hange

Senior Honors Theses

In the cell, chemically diverse solutes known as osmolytes accumulate in response to environmental stresses. To add to the understanding of how the environment inside a cell affects nucleic acid folding and function, we investigated the influence of cosolutes on the transition from B-DNA to Z-DNA in model DNA duplexes. Distinct from the familiar right-handed BDNA helical conformation, Z-DNA is a left-handed double helical structure with its phosphodiester backbone arranged in a zig-zag pattern that is unique to Z-DNA. Moreover, due to the correlation between Z-DNA formation potential and regions of active transcription, ZDNA is believed to serve a vital ...


The Significance Of The Nuclear Gene Ku80 In Mitochondrial Genome Stability Of Saccharomyces Cerevisiae, Brooke Scott 2020 State University of New York College at Brockport

The Significance Of The Nuclear Gene Ku80 In Mitochondrial Genome Stability Of Saccharomyces Cerevisiae, Brooke Scott

Senior Honors Theses

Mitochondria are essential organelles in eukaryotes. They are often referred to as the powerhouse of the cell because mitochondria manufacture ATP, which is required for the successful completion of many cellular processes. Mitochondria have individual genomes, separate from the nuclear DNA, which encode proteins required for respiration. In humans, mutations in the mitochondrial DNA (mtDNA) result in the loss of mitochondrial function which leads to neuromuscular and neurodegenerative disorders. The focus of this study is to determine the role of the nuclear gene KU80 in maintaining mtDNA stability in the budding yeast, Saccharomyces cerevisiae. The product of the KU80 gene ...


Groundwater Quality In Two Semi-Arid Areas Of Algeria: Impact Of Water Pollution On Biodiversity, Redjaimia Lylia, Hadjab Ramzi, Khammar Hichem, Merzoug Djemoi, Saheb Menouar 2020 University of Oum El Bouaghi, Algeria

Groundwater Quality In Two Semi-Arid Areas Of Algeria: Impact Of Water Pollution On Biodiversity, Redjaimia Lylia, Hadjab Ramzi, Khammar Hichem, Merzoug Djemoi, Saheb Menouar

Journal of Bioresource Management

The biodiversity and quality of subterranean waters were comparatively studied in the Tarf plain near Oum-El-Bouaghi and in the Ksar S’bahi in Oum-El-Bouaghi, in North-eastern Algeria. For this purpose, physicochemical and faunistic analyses were carried out on the water of ten stations located in the area of Tarf, and thirteen in the area of S’bahi. In the wells of Tarf, the average stygobiologic diversity was relatively high in the wells located upstream the dumping site from the city where the groundwater presented low contents of nitrates and orthophosphates. In contrast, the wells located in the spreading zone of ...


Did You Wash Your Caving Suit? Cavers’ Role In The Potential Spread Of Pseudogymnoascus Destructans, The Causative Agent Of White-Nose Disease, Violeta Zhelyazkova, Antonia Hubancheva, Georgi Radoslavov, Nia Toshkova, Sebastien J. Puechmaille 2020 National Museum of Natural History, Bulgarian Academy of Sciences

Did You Wash Your Caving Suit? Cavers’ Role In The Potential Spread Of Pseudogymnoascus Destructans, The Causative Agent Of White-Nose Disease, Violeta Zhelyazkova, Antonia Hubancheva, Georgi Radoslavov, Nia Toshkova, Sebastien J. Puechmaille

International Journal of Speleology

White-Nose Disease (WND) has killed millions of hibernating bats in the US and Canada. Its causative agent, the fungus Pseudogymnoascus destructans was introduced to North America, but is native to Europe and Asia, where it is not associated with mass mortality. Although it is nearly impossible to eradicate an emerging wildlife disease, research on P. destructans spread mechanisms can aid in prevention of new introductions and development of better environmental management strategies. It is of particular importance to quantify the potential role of people visiting caves (cavers, tourists, bat researchers, etc.) whom inadvertently move P. destructans spores between sites, and ...


Strategies Of Plant Biotechnology To Meet The Increasing Demand Of Food And Nutrition In India, Santanu De 2020 Nova Southeastern University

Strategies Of Plant Biotechnology To Meet The Increasing Demand Of Food And Nutrition In India, Santanu De

Biology Faculty Articles

A groundbreaking application of biotechnology research during the recent past has been improvement of crop health and production. India being one of the most rapidly developing countries with an enormous population and remarkable biodiversity, plant biotechnology promises significant potential to contribute to characterization and conservation of the biodiversity, increasing its usefulness. However, India’s green revolution was noted to be insufficient to feed the country's teeming millions. Therefore, novel approaches in crop biotechnology had to be aimed at ensuring better productivity and quality of cultivars. This paper provides a comprehensive review of research undertaken mainly in the last couple ...


The 14-3-3 (Ywha) Proteins In Mammalian Reproduction, Santanu De 2020 Nova Southeastern University

The 14-3-3 (Ywha) Proteins In Mammalian Reproduction, Santanu De

Biology Faculty Articles

The 14-3-3 (YWHA or Tyrosine 3-Monooxygenase/Tryptophan 5-Monooxygenase Activation protein) is an acidic and homologous protein family involved in regulation of key biological events including cell cycle, signal transduction and development. They are highly conserved and are expressed ubiquitously across a wide variety of species ranging from plants to animals. Seven isoforms of 14-3-3 exist in mammals, which are encoded by separate genes, have tissue-specific, developmental stage-specific as well as isoform-specific presence and consequences. It is known that these proteins play significant roles in mitosis of mammalian cells and meiosis of amphibians. However, their effects on development and functioning of ...


Are Pangolins Scapegoats Of The Covid-19 Outbreak-Cov Transmission And Pathology Evidence?, Siew Woh Choo, Jinfeng Zhou, Xuechen Tian, Siyuan Zhang, Shen Qiang, Stephen James O'Brien, Ka Yun Tan, Sara Platto, Klaus-Peter Koepfli, Agostinho Antunes, Frankie Thomas Sitam 2020 Wenzhou-Kean University - China

Are Pangolins Scapegoats Of The Covid-19 Outbreak-Cov Transmission And Pathology Evidence?, Siew Woh Choo, Jinfeng Zhou, Xuechen Tian, Siyuan Zhang, Shen Qiang, Stephen James O'Brien, Ka Yun Tan, Sara Platto, Klaus-Peter Koepfli, Agostinho Antunes, Frankie Thomas Sitam

Biology Faculty Articles

The COVID‐19 outbreak has infected over 6 million people across the world. The origin of COVID‐19 coronavirus (CoV) remains unknown, although pangolins have been suggested as potential hosts. We investigated two pangolins seized in Guangdong Province, China. Molecular screening revealed CoV in one pangolin (“Dahu”), while another (“Meidong”) was infected by Ehrlichia ruminantium. Dahu exhibited difficulty breathing, infections of lung, intestines, and nostrils, as revealed by computed tomography imaging and necropsy. Previous phylogenetic analyses showed bat coronavirus RaTG13 is closer to COVID‐19 CoV compared to pangolin coronavirus. Over 20 caregivers have had close physical contact with CoV ...


Great Lakes Snake: Estimating The Occupancy And Detection Probabilities Of The Eastern Massasauga Rattlesnake (Sistrurus Catenatus), Arin June Thacker 2020 Grand Valley State University

Great Lakes Snake: Estimating The Occupancy And Detection Probabilities Of The Eastern Massasauga Rattlesnake (Sistrurus Catenatus), Arin June Thacker

Masters Theses

Detailed knowledge of a species’ range and distribution is important for understanding species persistence and developing species management plans. This issue is particularly pronounced in threatened species with wide-spread range and a low detectability in their natural environment, as surveying and successfully encountering this type of species is oftentimes difficult. One such species is the eastern massasauga rattlesnake (Sistrurus catenatus), a smallbodied pit viper with a distribution centered around the Great Lakes region. We used singleseason occupancy modeling in order to reassess the status of historic massasauga occurrences. We evaluated factors affecting eastern massasauga detection probability from a long-term dataset ...


Recognition Of An Α-Helical Hairpin In P22 Large Terminase By A Synthetic Antibody Fragment., Ravi K Lokareddy, Ying Hui Ko, Nathaniel Hong, Steven G Doll, Marcin Paduch, Michael Niederweis, Anthony A Kossiakoff, Gino Cingolani 2020 Thomas Jefferson University

Recognition Of An Α-Helical Hairpin In P22 Large Terminase By A Synthetic Antibody Fragment., Ravi K Lokareddy, Ying Hui Ko, Nathaniel Hong, Steven G Doll, Marcin Paduch, Michael Niederweis, Anthony A Kossiakoff, Gino Cingolani

Department of Biochemistry and Molecular Biology Faculty Papers

The genome-packaging motor of tailed bacteriophages and herpesviruses is a multisubunit protein complex formed by several copies of a large (TerL) and a small (TerS) terminase subunit. The motor assembles transiently at the portal protein vertex of an empty precursor capsid to power the energy-dependent packaging of viral DNA. Both the ATPase and nuclease activities associated with genome packaging reside in TerL. Structural studies of TerL from bacteriophage P22 have been hindered by the conformational flexibility of this enzyme and its susceptibility to proteolysis. Here, an unbiased, synthetic phage-display Fab library was screened and a panel of high-affinity Fabs against ...


Long‐Distance Natal Dispersal Is Relatively Frequent And Correlated With Environmental Factors In A Widespread Raptor, Hanna M. McCaslin, T. Trevor Caughlin, Julie A. Heath 2020 Boise State University

Long‐Distance Natal Dispersal Is Relatively Frequent And Correlated With Environmental Factors In A Widespread Raptor, Hanna M. Mccaslin, T. Trevor Caughlin, Julie A. Heath

Biology Faculty Publications and Presentations

  1. Dispersal is a critical process influencing population dynamics and responses to global change. Long‐distance dispersal (LDD) can be especially important for gene flow and adaptability, although little is known about the factors influencing LDD because studying large‐scale movements is challenging and LDD tends to be observed less frequently than shorter‐distance dispersal (SDD).
  2. We sought to understand patterns of natal dispersal at a large scale, specifically aiming to understand the relative frequency of LDD compared to SDD and correlates of dispersal distances.
  3. We used bird banding and encounter data for American kestrels (Falco sparverius) to investigate the effects ...


Functions Of Fibroblast Growth Factor Homologous Factor 2 In Excitable Tissues, Christopher Marra 2020 The Graduate Center, City University of New York

Functions Of Fibroblast Growth Factor Homologous Factor 2 In Excitable Tissues, Christopher Marra

Dissertations, Theses, and Capstone Projects

Purpose: Fibroblast Growth Factor Homologous Factors (FHFs) are a group of proteins known to associate with and modulate voltage-gated sodium channels (Nav) in excitable cells. The four FHF genes are differentially expressed in specific cell-types, with FHF2 expressed prominently in the hippocampus, cerebral cortex, heart and dorsal root ganglia. Due to previous unavailability of an Fhf2 knockout mouse, this gene’s functions have been understudied in comparison to other those encoding other FHFs. The purpose of this research has been to better understand the normal physiological functions of FHF2 at the cellular and system levels in the heart, sensory ...


Digital Commons powered by bepress