Browsing by Department "Biology"
Now showing items 21-40 of 458
-
(2013-04-08)The origin and maintenance of phenotypic variation has generated considerable interest among students of functional morphology, sexual selection and behavioral ecology. In particular, hybridization has been suggested as a ...
-
(2012-12-06)All complex organisms possess a nervous system which they use to monitor environmental and internal stimuli. In higher vertebrates, the nervous system is comprised of billions of cells which form highly plastic neural ...
-
(Texas A&M University, 2007-09-17)The MotA and MotB proteins of E. coli form a MotA4MotB2 complex. Proton flow through a transmembrane channel in the complex powers flagellar rotation. Protonation of Asp-32 of MotB within the channel is proposed to cause ...
-
(2016-01-13)During colon cancer development, epigenetic alterations contribute to the dysregulation of major cellular functions and signaling pathways. Recent evidence suggests that nutritionally chemoprotective components that influence ...
-
(Texas A&M University, 2006-08-16)Melatonin is rhythmically synthesized and released by the pineal gland and, in some species, retina during the night and regulates many physiological and behavioral processes in birds and mammals. Chick diencephalic ...
-
(2013-02-06)The flagella organelle is crucial to many different cells and organisms because it allows for sensation and movement throughout a matrix. The Intraflagellar Transport system (IFT) is of particular interest since it helps ...
-
(2020-06-04)Very little is known about how tissues can regulate their size. In one possible mechanism, cells in a tissue secrete a factor that inhibits their proliferation, and as the tissue gets bigger, the concentration of the factor ...
-
(2013-09-24)Anemia is a term that defines a condition in which a person’s blood lacks a stable amount of red blood cells or hemoglobin. This condition can cause a person to experience fatigue, and an improper amount of oxygen will be ...
-
(Frontiers Media, 2014-09-26)Over the last several decades, the distribution of the black mangrove Avicennia germinans in the Gulf of Mexico has expanded, in part because it can survive the occasional freeze events and high soil salinities characteristic ...
-
(2010-10-12)The transportation of organisms in the ballast water of cargo ships has been recognized as a source of invasive species despite current control measures. Pathogenic bacteria in the ballast tank have been studied but the ...
-
(2009-05-15)In order to release progeny, bacteriophages must lyse the host cell by compromising the peptidoglycan layer. There are two known strategies of lysis: the holin-endolysin system and single gene lysis (SGL), which are dependent ...
-
(2012-02-14)The neural mechanisms underlying vocal motor control are poorly understood in mammalian systems. Particularly lacking are details pertaining to the mechanisms and neuroanatomical basis of sensory-motor integration and vocal ...
-
(2013-05-02)Similar to the development of speech in human infants, song learning in juvenile songbirds starts with memorization of adult vocalizations. Young birds develop their own song as a replica of a memorized adult song model ...
-
(2009-05-15)Conservation biologists have used reintroduction as a method to reestablish extirpated species in their native habitat. Three important aspects of a successful reintroduction effort include: (1) a habitat suitability study ...
-
(2017-06-29)Although singing has been recently recognized in some bat species, the prevalence and ecological significance of this behavior in bats is still mysterious. Cardioderma cor, the heart-nosed bat, was one of the first bats ...
-
(2019-07-19)Transfer RNAs (tRNAs) are primeval molecules ubiquitous to all domains of life. The interactions between aminoacyl-tRNAs (aa-tRNAs) and actively translating ribosomes are critical components to the central dogma of biology ...
-
(2013-11-06)Bacteriophages infect and kill bacterial cells. During the infection cycle, a phage attaches to the host cell surface, then ejects its DNA into the cytoplasm, where its progenies are subsequently assembled. The final ...
-
(2018-05-24)Textbook for Introductory Biology I. First half of an introdutory two-semester survey of contemporary biology that covers the chemical basis of life, structure and biology of the cell, molecular biology and genetics; ...
-
(2018-05-24)Textbook for Introductory Biology II. The second half of an introductory two-semester survey of contemporary biology that covers evolution, history of life, diveristy and form and function of organisms; includes laboratory ...
-
(2012-07-16)Thyrotropin (TSH) is a glycoprotein hormone released from the pituitary gland to promote the synthesis and secretion of thyroid hormone. The existence of well-established peripheral mechanisms for regulation of thyroid ...